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Board Review: General Anatomy Respiratory Anatomy > Diaphragm > Flashcards

Flashcards in Diaphragm Deck (16):
1

What is a fibromuscular septum that seperates the thoracic cavity from abdominal cavity?

Diaphragm

2

The diaphragm developed from what 4 origins?

Septum Transversum
Pleuroperitoneal Membranes
peripheral rim of Body wall
Dorsal Mesentery of esophagus

3

The central tendon of diaphragm comes from what?

Septum transversum which arises from 3rd, 4th 5th cervical somites.

4

The muscle fibers of the diaphragm originate from what 4 areas?

Right crus (L1-3)
Left crus (L1-2)
Lower 6 ribs
Sternum (posterior aspect of xiphoid process)

5

The muscular fibers are inserted into what?

Central tendon

6

What are the 3 major openings in diaphragm at T8, T10 and T12?

T8: IVC, R phrenic N, Pericardiacophrenic vessels
T10: Esophagus, Vagus N
T12: Aorta, Thoracic duct, Azygos V

7

What passes through central tendon?

Inferior Vena Cava

8

The esophagus passes through what/

R crus

9

The aorta passes between and behind what?

R and L Crura

10

The diaphragm is innervated by what?

Phrenic N (C3,4,5)

11

The diaphragm is covered by what?

Pleura (superiorly)
Peritoneum (inferiorly)

12

The peritoneum and pleura in the CENTER of diaphragm is innervated by what?

Phrenic N

13

The peritoneum and pleura in PERIPHERY of diaphragm are innervated with what?

Lower 6 intercostal nerves

14

Condensation of fascia over psoas muscle is called what?

Medial arcuate ligament

15

Condensation of fascia over quadratus lumborum is called what?

Lateral arcuate ligament

16

The median arcuate ligament connects what/

R and L crura and arches over the aorta