Lecture 6

Question 1

T/F one nerve supplies both sides of the diaphragm

Answer 1

F: two nerves R. and L, phrenic

Question 2

Contraction of the diaphragmatic muscles do what to the direction of the diaphragm (superior or inferior) and causes what core aerobic process?

Answer 2

Diaphragm moves inferior and causes inspiration

Question 3

What are the arcuate ligaments?

Answer 3

There are three ligaments inferior to the diaphragm that pass over major structures on the posterior wall of the thoracic cavity. The median, medial and lateral arcuate ligaments

Question 4

What does the median ligament pass over?

Answer 4

The aorta

Question 5

What do the medial arcuate ligaments pass over?

Answer 5

Psoas mm

Question 6

What does the the lateral arcuate ligaments cross over?

Answer 6

quadratus lumborum mm

Question 7

What are the somatic nn. starting at T12? Are they somatic or Autonomic?

Answer 7

T12 = subcostal n. (somatic)
L1 = Iliohypgastric and Ilioinguinal nn. (somatic)
L1-L2 = Genitofemoral n. (somatic)
L2-L3= Lateral femoral cutaneous n. (somatic)
L2-L4 = Femoral n. (somatic)
L2-L4 = Obturator n. (Somatic)
L4-L5 = Lumbosacral trunk (ANS)

Question 8

What are the vessels of the diaphragm?

Answer 8

Pericardiacophrenic a. & superior phrenic a. both supply superior surface.
Inferior phrenic supplies the inferior surface
muscolophrenic supplies the perirphery