Pectoralis Major, Minor And Serratus Anterior (1)

Question 0

What is the structure of the pectoralis major?

Answer 0

• Arises from anterior section of clavicle
• Down to 7th rib
• All converge in a flat tendon - inserted into lateral lip of bicepital groove of humorous

Question 1

What is the function of the pectoralis major?

Answer 1

• Main adductor of upper limb

- Flexion and medial rotation of humorous

Question 2

What is the function of the pectoralis minor?

Answer 2

• Draws scapular inferior and medial towards thorax

Question 3

What is the structure of the pectoralis minor?

Answer 3

• Origin ribs: 3,4 and 5
• Converges to form a flat tendon
• Inserted to medial border and upper surface of coracoid process of scapula.

Question 4

What is the structure of the serratus anterior?

Answer 4

• Origin on surface of 1st to 8th ribs to anterior length of medial border of scapula

Question 5

What is the role of the serratus anterior?

Answer 5

• Rotation forwards and backwards at 90 degrees.