Grant's Ch. 1 - Intermediate Muscles of the Back (P1)

Question 1

List the 2 intermediate muscles of the back.

Answer 1

1) Serratus posterior superior
2) Serratus posterior inferior

Question 2

List the medial attachments of the serratus posterior superior (HINT: it is a range of SPs, and there are 4 “bands” on muscle on each side - left & right).

Answer 2

SP C7-T3

Question 3

List the lateral attachments of the serratus posterior superior (HINT: part of the answer is a range of ribs, so be specific & be aware that ribs have angles).

Answer 3

Superior borders of ribs 2-5, lateral to their angles

Question 4

What is the action of the serratus posterior superior?

Answer 4

Elevate ribs 2-5

Question 5

What innervates the serratus posterior superior?

Answer 5

Anterior rami T2-T5

Question 6

List the medial attachments of the serratus posterior inferior (HINT: it is a range of SPs).

Answer 6

SP T11-L2

Question 7

List the lateral attachments of the serratus posterior inferior (HINT: part of the answer is a range of ribs, so be specific & be aware that ribs have angles).

Answer 7

Inferior border of ribs 9-12, lateral to their angles

Question 8

What is the action of the serratus posterior inferior?

Answer 8

Depress ribs 9-12

Question 9

What innervates the serratus posterior inferior?

Answer 9

Anterior rami T9-T12