Bicep
Preview:
The bicep imo is the best landmark for finding were to place the surrounding upper arm muscles and the lower ones too!
Synonyms: Bicep; Bicep brachii
Summary
The Bicep or the Bicep Brachii is a staple for all the gym bros across the globe. The bicep can be broken into a long head and a short head. Both the heads originate for different parts of the scapula. If you want to be all fancy the long head starts from the supraglenoid tubercle and the short head starts at the coracoid process. They converge and attach to the radius. All though gym bros think biceps are making them look all ripped they have much more significate use. Have you wondered how you can move your arm forward to twist door nob. Well you can say thank you to your bicep for that one!
Side note Idk who decided to make the most unpronounceable names ever but here is how you pronounce them:
(coracoid: Kaw-ruh-coyd) (supraglenoid: soo-pruh-glee-noyd; tubercle: too-bur-khul)
Basics
Origin
The long head of the bicep originates from the supraglenoid tubercle and it verges with the short head to the radius. The short head orgonites from coracoid process.
Pronunciation above^
Insertion
The insertion of the bicep is the radius or if you want to get all fancy the radial tuberosity. When the arm is supinated the bicep is flexed when its pronated the bicep is stretchered.
Functions
One of the main functions of the bicep is bending your elbow joint, bringing your wrist and upper arm closer together. Since the two heads originates from the shoulder blade another use is stabilizing the shoulder joint. A great example of your bicep at work is when your mom asks you to bring the groceries from the car. Or for all the gym bros when you curl a dumbbell the main muscle your working is your bicep.
How to draw the muscle
When the bicep is flexed the muscle fibers bunch up and create a bulge. Keep in mind when designing the muscle that there are a lot of different ways the bicep bulge can look. For example people sometimes have shorter bicep heads so when the flex their bicep bulge will look shorter and more bunched together.
Advanced
Everything beyond the basics
After researching about the bicep I learned something new, on top of there other jobs they also help help by pulling your shoulder blade inward and down. Witch helps the shoulder blade from just slumping forward. Another thing to note is that when you flex your bicep another muscle the brachialis is bosting your bicep making it look bigger!
*insert drawings if needed for explanation*
Reference Pictures (for study only)
got these from Google search and Pinterest
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