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Flashcards in Abdominal Cavity 2 Deck (26):
1

Diaphragm

Dome shaped muscle separating thoracic and abdominal cavities

2

Action of diaphragm

Contraction lowers/expands thoracic cavity during inspiration

3

Structures of Diaphragm

Central Tendon
Right and Left Crura
Medial and Lateral Arcuate Ligaments
Sternal, Costal, and Lumbar sections

4

Apertures of diaphragm

Vena Caval (T8)
Esophageal (T10)
Aortic Hiatus (T12)

5

Arterial Supply

Superior Phrenic (descending aorta)
Musculophrenis (internal thoracic)
Pericardiacophrenic (internal thoracic)
Inferior phrenic (abdominal aorta)

6

Venous Drainage

Phrenic (to internal thoracic)
Musculophranic (to internal thoracic)
Inferior phrenic (right to IVC and left to renal)

7

Innervation of Diaphragm

Phrenic (efferent and afferent)
Intercostal (T5-T11) and subcostal (T12)

8

How does diaphragm play role in referred pain from gallbladder

Gallbladder impinges on phrenic
- C3, 4, 5, so will lead to pain in diaphragm and other areas as well

9

Function of kidneys

Filtration, urine production

10

Arterial Supply of Kidneys

Renal artery from abdominal aorta

11

Venous drainage of kidneys

Renal vein to IVC
Right - shorter
Left - almost twice as long because has to go over to drain into IVC

12

Structures of the kidneys

Renal Hilum - Entry/Exit for renal vessels and ureters

13

Suprarenal Glands (adrenal) - Function

Endocrine system
Important in sympathetic NS

14

Arterial Supply of Adrenal Glands

Via suprarenal arteries

15

Arteries of posterior abdominal wall

Most directly from abdominal aorta
1. Inferior phrenic
2. Celiac trunk
3. Superior mesenteric
4. Suprarenal
5. Renal
6. Gonadal
7. Inferior Mesenteric - lumbar artery

16

Veins of posterior abdominal wall

Inferior Vena Cava
Right Gonadal Vein (left goes to left renal)
Right and left renal veins
Lumbar veins

17

Quadratus Lumborum Origin

Iliac Crest

18

Quadratus Lumborum Insertion

Transversus process of lumbar vert (L1-L4 and rib 12)

19

Quadratus Lumborum Innervation

Subcostal nerve T12 and lumbar plexus

20

Quadratus Lumborum Action

Bilaterally - extends vertebral column, stabilizes hip and spine, accessory in expiration (holds rib 12 steady)
Unilaterally - laterally flexes vertebral column (straddle to right - working right QL)

21

Iliospsoas Origin

Iliacus part of iliac fossa - psoas part from transverse processes and vertebral bodies/discs (T12-L5)

22

Iliopsoas Insertion

Lesser trochanter of femur

23

Iliopsoas Innervation

Lumbar plexus and femoral nerve (L2-L4)

24

Iliopsoas Action

Flexion of thigh/hip
Unilaterally - laterally flex trunk
Bilaterally - laterally flex trunk when lying down (dracula)

25

Tight psoas

Anterior pelvic tilt and hyperlordosis --> back problems
Thomas test

26

Lumbar plexus

Somatic efferents and afferents
Ventral rami of L1 - L4