Serratus MM.

Question 1

What is the origin of serratus posterior superior?

Answer 1

vet. spiunes C7-T1

Question 2

What is the insertion of serratus posterior superior?

Answer 2

ribs 2-5 (anteriorly)

Question 3

What is the action of serratus posterior superior

Answer 3

raise upper ribs (not used in respiration)

Question 4

What is the origin of serratus posterior inferior?

Answer 4

Vet spines T10 - L12

Question 5

What is the insertion of serratus posterior inferior?

Answer 5

ribs 9-12 (anteriorly)

Question 6

What is the action of serratus posterior inferior?

Answer 6

depress lower ribs (not used in respiration)

Question 7

What is the origin of serratus anterior?

Answer 7

ribs 5-8 (anterior)

Question 8

What is the insertion of serratus anterior?

Answer 8

medial border of the scapula (courses under the scapula)

Question 9

What is the general action of serratus anterior?

Answer 9

generally protracts scapula

keeps the medial border of the scapula against the body

Question 10

What is the action of the upper part of the serratus anterior?

Answer 10

suspends scapula along with other MM.

Question 11

What is the action of the lower part of the serratus anterior?

Answer 11

assist upper trap in rotation of scapula so acromion can move forward/ raises the point of the shoulder as in raising the arm overhead