How To Draw The Shoulders And Chest Of A Female
Learning to draw shoulders tin can get very catchy very fast. What is involved in shoulder drawing is a web of interacting muscles at the shoulder joint, muscles that motility and twist as the humerus bone rotates in its socket taking the arm this mode and that.
To describe the shoulders well, study the skeletal and muscular anatomy of the shoulder joint. Then, apply anatomy knowledge to observation and drawing of the shoulder joint from diverse angles.
My goal in this tutorial is to accept yous through the required anatomy step-by-footstep, in an try to amend your shoulder drawings.
How to Draw the Shoulders – Tabular array of contents
- Introduction to drawing the shoulders
- Skeletal beefcake of the shoulder
- Muscular anatomy of the shoulder
- Shoulder muscles folding over chest muscles
- Interaction of muscles around the shoulder joint
- Drawing the shoulder muscles with arm raised
- Diving deeper, the acromioclavicular articulation (scapula and clavicle)
- Drawing the shoulders – final thoughts
1. Introduction to drawing the shoulders
In this guide, we will go over the bones involved in the motion of the shoulder muscles, likewise every bit the muscles effectually the shoulders.
We volition then dive deep into muscle interaction, looking at precise attachment points, wedging of muscles, and their pull and stretch. With this knowledge, nosotros will depict the shoulders from various angles and with arm raised.
Shoulder anatomy for cartoon begins with simple observation of a few major bones but ends with going over many muscles that twist and overlap in ways that can be difficult to remember, equally the muscles travel from the dorsum to the front fo the body.
I provide numerous drawings to help united states of america along the manner. Stay close to the text as you lot look over the included shoulder cartoon diagrams. Together we tin go to a place where shoulder drawing is a strength and not a weakness in our drawings.
Without further ado, let's begin.
2. Skeletal anatomy of the shoulder for drawing
Allow's first look at the bone very involved in the structure of the shoulder and its move, the scapula.
The scapula
The scapula bone is a triangular apartment slice of bone with a protruding bit on the top – called the spine of the scapula (covered beneath). The scapula glides over the rib cage. I use the word glides because it moves significantly based on the movement of the arm.
When the arm is raised the scapula turns upward. When the arm is extended to the front, the scapula glides to the side of the rib cage in back up of that movement.
Here is the view of the scapulas from the forepart of the trunk. We can detect these bones fix at the back and connected to the humerus bones of the arm at the shoulder articulation, and to the clavicle at the front.
The spine of the scapula
In this diagram (above), nosotros are looking at the back view of the body. The spines of the scapulas are highlighted. The spine of the scapula (or a scapular spine) is an important landmark for cartoon the shoulders.
At the top forth its ridge, the trapezius muscles attach. At the bottom along its ridge, we come across the attachment of the shoulder (deltoid) muscles. Nosotros will take a closer look at these attachments below.
Interaction of the scapula and rib cage
Exist prepared to have some problem identifying the scapula's position exactly every bit it glides about the back of the ribcage. The noesis of precise position depending on movement and the figure can only come up from practice and from looking at and drawing many, many examples.
The scapular spine and its medial border are big giveaways to finding the position of the scapula.
Below nosotros volition map out the connections of the deltoid muscles to the scapula, as well as wait at muscles that originate there and move towards the shoulder articulation.
At the very bottom of this tutorial, nosotros will dive deep into various aspects of the scapula and the clavicle as they come together in the acromioclavicular joint.
The clavicle
Every bit the shoulder muscles connect to the spines of the scapulas on the back of the body, they too connect to a portion of the clavicle at the front end of the body.
Here is a view of the clavicles (highlighted) from the back. Take a look at the clavicles besides as the spine of the scapulas in this epitome. Together they form a circumference around which the shoulder muscles connect.
The humerus os
The insertion indicate of the shoulder muscles every bit they move downwardly the arm is at the humerus bone. All shoulder muscles stop up there at the outer (lateral) side of the arm. The right and left humerus bones are highlighted in the prototype above.
For cartoon the shoulders, knowing where shoulder muscles originate and where they insert is extremely of import. We cannot map out the muscle attachments until we empathise the construction of the bones they attach to.
Take another expect at the diagrams above before moving on. Pay special attention to the scapular spine and the clavicle.
3. Muscular beefcake of the shoulder for drawing
Naming of shoulder muscles
The shoulders are called the deltoid muscles or the deltoids.
There are three sections to the shoulder musculus: an inductive head (front end), a posterior caput (dorsum), and wedged in betwixt the two, the middle head.
Sometimes these sections are referred to as the rear delts, the front delts, and the side delts.
Connection points and function
The shoulder connects the scapula, the clavicle, and the humerus bones, inserting about a 3rd of the way down on the humerus os laterally. All 3 heads of the shoulder are directed downward into the arm.
The shoulder helps in pulling the arm up. The forepart head of the deltoid helps raise the arm in front of y'all, the middle (side) caput helps raise the arm laterally, And the rear head of the deltoid helps pull the arm back.
Let'south showtime past looking at the front and back of the shoulders generally.
Notation the following equally yous look at the diagram in a higher place:
At the forepart, the shoulders connect at the clavicle, sharing the connection along with the chest muscles. The clavicle is indicated with an orange color on the left image (higher up).
On the right image (view from the dorsum), the spines of the scapulas are indicated in red. On the back, the shoulders connect to the spines of the scapulas from underneath.
Notation also, that at the forepart, the shoulders move down the arm, and wedge in behind the biceps, connecting to the humerus bone.
Shoulder muscles – anterior view
In the sketches above, I am slightly rotating the arm to reveal more of the shoulder muscles every bit we move from left to right. The shoulder muscles accept three heads – the front deltoids, medial deltoids, and rear deltoids.
Front delts are indicated at 2, heart delts at 1 and rear at 3. At 4 is the clavicle bone. At 5, I indicated the biceps muscle and at 6 the brachialis muscle.
Notation that all three heads of the shoulder muscles come together and wedge between the biceps and the brachialis. A common mistake is to place the shoulder muscles between the brachialis and the triceps.
If yous are curious virtually the anatomy of the arm for drawing, visit my tutorial at this link.
Summary of origin and insertion of the shoulder muscles for drawing
| Shoulder caput | origin | insertion |
|---|---|---|
| Inductive (front end) head of the deltoid | Lateral tertiary of the clavicle | Deltoid tuberosity on the lateral side of the torso of the humerus |
| Middle head of the deltoid | Acromion and clavicle | Deltoid tuberosity on the lateral side of the body of the humerus |
| Posterior head of the deltoid | Spine of the scapula | Deltoid tuberosity on the lateral side of the body of the humerus |
Shoulder muscles – posterior view
Now let's take a await at the shoulder muscles from the back view. Looking at the back, the rear deltoid caput is most prominent.
We too see some of the lateral deltoid caput wrapping around the outside of the arm. Notice how in the prototype to a higher place, the rear deltoid attaches (origin) right at the spine of the scapula.
The lateral deltoid head attaches (origin) at both the scapula and the clavicle. Both heads insert at the lateral side (outside) of the humerus (upper arm bone).
In this paradigm, we meet the three deltoid heads as nosotros motion from the dorsum (left picture on epitome) to the lateral view (exterior of the arm), on the correct.
Here (paradigm higher up), at 1 we have the lateral deltoid head, at 2 nosotros have the anterior deltoid caput, at 3 we take the rear deltoid caput. At vi brachialis musculus is indicated and at 5 the biceps muscle.
Observe that the three shoulder heads come together and insert between the brachialis and the biceps muscle to adhere at the humerus bone.
(At that place is a muscle of the forearm that moves upward the arm and wedges between the brachialis and triceps muscles, information technology is called the brachioradialis. Remember as yous draw the shoulder and the arm that while the brachioradialis divides the upper arm between the biceps and the triceps, the shoulder makes a sectionalization between brachialis and the biceps muscles instead.)
4. Shoulder muscles folding over chest muscles
Now let'south take a look at how shoulder (deltoid) muscles interact with a chest muscle (pectoralis major).
From the image in a higher place we come across the distribution of the shoulder and the breast muscles on the clavicle bone.
From the front, deltoids take up most the upper tertiary of the clavicle, and the pectoral muscles accept up about the bottom two-thirds of the clavicle down its length until it connects to the sternum (eye of the rib cage).
Take note of how both shoulder and chest muscles attach at the humerus os of the arm. Notation how information technology is the breast muscle that tucks-in under the shoulders at that location and not the other fashion around.
So far things have been pretty simple in our goal of learning to draw the shoulders.
There are some bones and some shoulder muscles that map onto those bones. Sure! That's smashing.
However, to draw the shoulders well, we have to dive deeper into muscle anatomy and interactions of muscles at the shoulder articulation.
This is where things go more complex. To help usa visualize and later draw with anatomical accuracy, I prepared a step-by-stride diagram to assistance usa get through information technology together. Let's go!
5. Interaction of muscles effectually the shoulder articulation
Now allow'southward look at the muscles that go into the shoulder articulation surface area every bit we draw the shoulders from the back.
2. humerus
In this showtime diagram, nosotros have the scapula at 1 and the humerus bone at 2. Posterior view.
2. humerus
3. triceps
Now at 3 permit's add the triceps muscles. Note the ii heads of the triceps muscle, one connecting to the humerus and note the other connecting to the scapula.
(There are three full heads of the triceps, notwithstanding, we simply need to focus on these ii since the third triceps head does not leave the humerus bone and is much more involved in drawings of the arm than the shoulders)
2. humerus
iii. triceps
4. infraspinatus
5. teres modest
6. teres major
Now I've added iii more than muscles that originate on the scapula and all drive towards and insert at the humerus in diverse positions
At 4 we accept the infraspinatus, at v nosotros have the teres minor and at 6 we have a teres major.
(We only took a big bound by adding these muscles of the back to our cartoon of the shoulder. If yous are curious well-nigh back anatomy and how to draw the dorsum, follow to my tutorial on drawing the back at this link. )
An important takeaway from the above diagram is that the teres major musculus (six), swings nether the triceps and finds an attachment at the humerus at the front end.
Memorizing this will assist when you are drawing the shoulder from the back and faced with figuring out where the muscles tuck in.
ii. humerus
three. triceps
4. infraspinatus
5. teres modest
6. teres major
vii. latissimus dorsi
In the above diagram, I added the latissimus dorsi muscle at 7. What'due south important to note here is that from the back it swings under the triceps and under the teres major.
While viewing it from the front you will run into that the teres major is hugging the lat musculus laterally (from the outside) when the arm is raised.
ii. humerus
3. triceps
4. infraspinatus
five. teres minor
vi. teres major
7. latissimus dorsi
8. deltoid
Finally, let'south add all three heads of the shoulder muscles to our diagram.
Detect how the shoulders map to the spine of the scapula. (on this diagram, the spine of the scapula is an up line only beneath 'ane').
For now but take discover of the fact that there are muscles from the back that movement toward and adhere at the humerus bone, They are then covered by the shoulders from the back merely get visible as the arm is raised up in the air.
six. Drawing the shoulder muscles with arm raised
We spent some time looking at the complex interaction of muscles at the shoulder joint from the back, permit's focus a flake more on muscle interaction at the shoulder from the forepart.
The outset thing to remember to help in drawing the shoulders from the forepart is that the chest muscles insert at the humerus.
In the illustration above, Nosotros see that the pectoralis major (chest muscle) is really twisted on itself at the insertion in the humerus bone.
Information technology untangles and the musculus fibers become parallel to each other when the arm is raised – as nosotros can see in the illustrations that follow below.
In the drawings higher up, I shaded in the scapula so that information technology tin can hands be separated from the humerus, clavicle, and the pectoral muscles.
Here nosotros run across the twisting of the chest musculus then we can discover that the fibers of the chest muscle at the connection to the arm really straighten out as we heighten the arm.
Let's at present describe in the shoulders on top of the foundation in these diagrams.
From the drawings to a higher place we see how the shoulder muscles cover the chest muscles at the humerus insertion, even when the arm is raised to reveal the armpit (center drawing).
Discover that when the arm is raised, the pectoral muscles tower over the armpit, equally they drive up over the biceps and and so tuck in under the shoulder muscle.
To empathize how to draw the shoulders with the arms raised, We must look at the interaction of the biceps and triceps muscles, coracobrachialis, latissimus, and the teres major muscles at the shoulder joint.
Note that coracobrachialis divides the biceps and triceps equally it wedges between the two towards its attachment at the humerus.
Note that scapula rotated to bulldoze the muscles attaching to it up as they push the arm above.
In the drawing in a higher place the scapula is indicated at 1, and teres major at 2. Notation how teres major drives to the front of the body when the arm is raised. At 3 and 4 we encounter the rear and middle heads of the shoulder. At 5 and half dozen we detect the infraspinatus and the teres small-scale respectively.
At 7 we see the latissimus dorsi (lats) muscle wrap around to the forepart from the back. At eight we see the triceps contracted as it helps extend the arm.
At 9 a small portion of the trapezius comes into view and at ten pectoralis major is visible as information technology drives up with the arm to tuck in nether the shoulder muscles at the humerus.
seven. Diving deeper – the acromioclavicular joint
On the image above, I painted (Photoshop) the outside and the inside of the scapula so that we tin take a closer expect at its landmarks and muscle attachments.
In the image on the left, the scapula is shown as it sits on the rib cage, with its outside facade facing us. The scapular spine is visible and the acromion process is also closest to the states.
In the prototype on the correct, it is the coracoid process of the scapula that is closest to usa, and the spine of the scapula is hidden by its shell-shaped interior.
Let's more closely examine the many landmarks of the scapula:
2. Acromion of the scapula
3. Infraspinous fossa (infraspinatus connects)
4. Long head of triceps connects
v. Glenoid crenel (socket of the humerus)
6. Coracoid process
7. Long head of triceps connects
8. Superior angle of the scapula
9. Junior angle of the scapula
10. Lateral border
11. Medial edge (serratus anteiror connects)
12. Teres modest connects
13. Teres major connects
14. Rhomboideus major connects
15. Spine of the scapula
sixteen. Supra spinatus connects
17. Subscapular fossa
As you can run across, there is a lot to learn about the scapula bones. let's cover the nigh of import points.
Spine of the scapula
Since the rear head of the deltoid connects at the scapular spine (15), it is ane of the most of import landmarks to know for cartoon the shoulders.
Scapular acromion
Another of import point is to know the location of the acromion of the scapula (2), that is the point where the scapula by way of a articulation connects with the clavicle. This landmark is also known equally the acromion process of the scapula or scapular acromion.
Glenoid cavity
Finally, take a look at the glenoid cavity (5), which is basically a brawl socket joint into which the humerus bone is placed. It allows for great freedom of articulation at the shoulder.
The clavicle os for drawings of the shoulders
If someone stood right in a higher place you lot and could wait downward and see your right clavicle, the image above is most what they would see.
For the following examples, we will use this superlative view, mainly because it will assistance to demonstrate of import shoulder attachments, and, I hope, help you construct anatomically correct shoulder drawings.
Acromioclavicular articulation
If this top view is confusing to you, imagine that a bird flew over above your shoulder, that is the view we're going to expect at. I desire to bear witness you this superlative-down view so that we tin see all iii heads of the shoulder muscles attach to the clavicle and the scapula.
Here we meet both the clavicle and the scapula from the top. I indicated the humerus bone equally it attaches to the shoulder joint with a regal circle.
Theacromioclavicular joint, (besides the AC joint), is a joint connecting the acromion of the scapula and the clavicle. This connection towers over the purple circle indicating the humerus.
Shoulder joint bones review – top view
Note the location of the acromion of the scapula equally it sticks out from the principal vanquish of the scapula. Information technology is slightly elevated and is the highest point of the scapula bone on the body.
Note here the highlighted coracoid process of the scapula. Information technology sits under the clavicle os and also overlooks the glenoid cavity where the humerus attaches.
Information technology may exist worth looking at a front end and rear view of the scapula once again, to see if y'all can identify the acromion and the coracoid procedure from those viewpoints, let's exercise that at present:
Allow'south now go on with our summit-down view:
Highlighted on the image above is the neck of the scapula, it is the section that leads up to the ball socket articulation with the humerus.
Attaching shoulder muscles – top view
Permit's at present attach the middle head of the shoulders to our diagram. You can see that information technology connects to both the scapula and the clavicle. Bringing both of those bones together.
Mapping out the other shoulder heads for cartoon.
Equally nosotros add the anterior and posterior deltoid heads to our diagram at that place are two things to note: kickoff (ane) note that from the front end, the anterior head attaches to the lateral 3rd of the clavicle. The rest of the clavicle forepart plane is taken up by the chest muscle zipper.
Second (2), notice that posteriorly, the rear deltoid head attaches downwardly the spine of the scapula. This is an important landmark and is the easiest way to observe the rear deltoid on the model or when drawing the shoulders from imagination.
viii. Cartoon the shoulders – final thoughts
Nosotros went over much skeletal and muscular anatomy to improve our understanding of shoulder cartoon. Next, effort cartoon the shoulders yourself.
My advice for studying anatomy for cartoon, and especially for cartoon the shoulders, is to wait very little before y'all get-go to draw.
Yeah, detailed knowledge of shoulder anatomy is required for drawing the shoulders. Much of it we just covered together. All the same, try drawing a few sketches of shoulders, and apply that experience to define gaps in your knowledge of anatomy. So come back to study and fill those gaps, and so endeavor cartoon the shoulders again refining each time.
An artist is rewarded, when they are both unafraid and cautious. Peradventure that is the best piece of advice for cartoon the shoulders. Exercise not be afraid to draw, just be mindful of mistakes and e'er endeavor to correct them.
I hope you lot found this tutorial on drawing the shoulders helpful! I call back you know what the next step is, just I'll say it anyway: it's time to describe!
Source: https://gvaat.com/blog/how-to-draw-the-shoulders-from-front-back-and-arms-raised/
Posted by: vangentler63.blogspot.com
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