Man, that was a loooong week. Here's my update.
Upper Anatomy Notes
Here are some notes and some doodles i took from watching Marc's class. I pondered doing individual studies for each muscle, but it's way too much work.
Brace for a bunch of text.
ARM
A . UPPER ARM
- BICEPS BRACHII
- BRACHIALIS
- TRICEPS
A1 Biceps Brachii
-The Biceps is composed of two different heads: the short head(x) and the long head(y).
x -Beside what its name implies, it appears to be the longest of the two.
-It's the one located closest to the torso.
-on the upper part it attaches directly on the scapula.
y -It's located towards the outside of the body, opposite to x.
-like x, it also attaches on the scapula, but in a different spot, firstly going over the joint of the humerus.
-Towards the upper attachments it goes under the pectoralis, pushing it forward.
-x and y merge towards the bottom attachment, where it goes under the forearm muscles and attaches to the radius (the bone closest to the thumb).
-It's a flexor muscle, responsible for pulling the forearm.
-In most cases, x and y, are indistinguishable, appearing as a single mass.
A2 Brachialis
-It's a single muscle located in between the biceps and triceps.
-On the front, it's mostly covered by the biceps, but it can be seen from both lateral sides of the arm.
-In most cases, it can be confused with the biceps, but its attachments are completely different.
-It's mostly visible on strong or lean body physiques.
-It attaches on the center of the humerus and goes towards the ulna (the bone of the elbow, closest to the pinkie), going under the brachioradialis(B1).
-Like the Biceps, it's a flexor muscle, responsible for the rotation of the forearm.
A2.1 Coracobrachialis
-Like the Brachialis, it's located in between the triceps and the biceps.
-It can be mistaken as an extension of the brachialis, but is a different, yet similar muscle.
-It originates in the middle of the humerus, next to the brachialis attachment and attaches in the scapula, right next to the Biceps Brachii Short Head(A1(x)).
A3 Triceps
-It has a distinct tendon that extends in a big portion of the triceps and attaches to the ulna (elbow), the muscle don't grow where there isn't fiber giving it an unusual "horseshoe" shape.
-It's composed of three different heads: the Medial Head(x), the Lateral Head(y) and the Long Head(z).
x -It's a big head that's mostly covered by the other heads, and can only be seen in a samall portion from the side.
-When developed, it's has a big impact on the volume of the muscle group, pushing the tendon and the other heads as it grows.
-It attaches under the tendon and in the middle portion of the humerus.
y -It's the smallest of the heads.
-It's located towards the outside of the body, opposite to (z).
-It's the responsible for the unique shape that is created as it grows.
-It originates from the tendon where it's merged with the long head (z) and goes to the top of the humerus, where it's covered my the deltoids.
z -Alongside the lateral head(y), it's one of the main muscles of the group.
-It's the one closest to the body.
-It originates from the tendon where it's merged with the lateral head (y) and attaches to the inner side of the scapula.
-On the upper part, it goes over the attachment of the teres major and of the latissimus dorsi.
-It's an extensor group, responsible for pushing and extend the arm.
B . FOREARM
- BRACHIORADIALIS
- POSTERIOR GROUP (EXTENSOR)
- ANTERIOR GROUP (FLEXOR)
B1 Brachioradialis
-Even though the brachioradialis is a single muscle there's one extensor(B2) that grows alongside it and has a similar volume and look to it, so they are going to be grouped together.
-It attaches on the bottom of the humerus right between the triceps(A3) and the brachialis(A2) and go all the way towards the tip of the radius (the one closer to the thumb).
-It visually connects the upper arm to the forearm.
-It's used to rotate the radius around the ulna, giving the forearm it's twisting motion.
B2 Posterior Group (Extensors)
-It's composed of 5 muscles, but one of them are group alongside the brachioradialis(B1) and one doesn't grow as much, leaving only three that gain mass and volume, appearing on muscular or lean people.
-It originates from the bottom bit of the humerus, on the side away of the body, between the elbow and the brachioradialis(B1), then attaches towards the back of the hand, on the tip of the fingers.
-It twists around the radius.
-They don't grow in mass towards the hand.
-As the name implies, its use to extend the fingers.
B2.1 Anconeus
-It's only kinda visible on muscular people.
-It appears on the elbow, in between the extensors(B2) and the flexors(B3).
B3 Anterior Group (Flexors)
-It's composed of 5 muscles, but they appear as one volume.
-It originates from the bottom bit of the humerus, on the side closer to the body, and it ends towards the palm of the hand, on the tip of the fingers.
-It twists around the ulna.
-Like the posterior group(B2), they don't grow in mass towards the hand.
-As the name implies, its use to flex the fingers.
End of the "bunch of text" part. Here are the doodles from the class.
01
02
.
.
.
Daily Anatomy Trace Over reference
01
02
03
04
05
.
.
.
Daily"ish" Color Observations and Notes
I realized that those take just to much effort, so from n.3 to the weeks forward gonna take a more simplified route and only identify the palettes, gonna take notes only if necessary.
01
02
03
.
.
.
Complete Color and Light Theory 1 Assignment 3
One thing i can say while doing those exercises is that those are not practical at all, overly complicated for something that most people don't realise the effort behind, best to just know the theory behind how the cast shadows work and do something approximately right using your gut then something mathematically correct.
.
.
.
Study 5 Stylized Upper Anatomy From Professionals
To do these i chose to study from Capcom, used the SF:20 The Art of Street Fighter Book as a reference.
I didn't try to copy it 1:1 and did some intencional small changes to fit my tastes, also decided to keep them sketchie and forgo the lineart for time sake.
All of them bunched up
Individual Close Up + Ref
01
02
03
04
05
.
.
.
And that's about it! Thanks for passing by to check on my ramblings.
