Chapter 4: The Abdomen Flashcards Preview

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Flashcards in Chapter 4: The Abdomen Deck (167)
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1

Cylindrical chamber between thoracic and pelvic cavities

abdomen

2

-forms the opening to abdomen
-Closed by the diaphragm

inferior thoracic aperture

3

continuous with the pelvic cavity at the pelvic inlet

deep abdominal wall

4

found in the abdomen

peritoneal cavity

5

superficially, is the superior margin of the leg

abdominal wall

6

either suspended in the peritoneal cavity by mesenteries or positioned between the cavity and the musculoskeletal wall

abdominal viscera

7

Houses the major elements of the gastrointestinal system, the spleen, and parts of the urinary system

abdomen

8

under the domes of the diaphragm

Much of the liver, gallbladder, stomach, and spleen

9

helps change the volume of the thoracic cavity during breathing

abdominal wall

10

abdominal wall accommodates the expansion of the thoracic cavity

inspiration

11

abdominal wall contracts to assist elevating the diaphragm

expiration

12

-When the diaphragm is fixed and air is retained in the lungs via a closed laryn

-Aids in voiding contents of bladder, rectum, uterus (giving birth)

Changes in intraabdominal pressure

13

Consists partly of bone but mostly of muscle

abdomen

14

what are the skeletal components of the abdomen?

5 lumbar vertebrae, superior parts of pelvic bones, ribs XII and XI and xiphoid process

15

what are the muscles of the abdomen?

-quadratus lumborum
-psoas major
-iliacus
-transverse and rectus abdominus
-internal and external obliques

16

suspended from the posterior wall of the abdominal cavity by the dorsal (posterior) mesentery

The gut tube (gastrointestinal system)

17

partly suspended from the anterior wall by the ventral (anterior) mesentery

Proximal regions of the gut tube

18

-lined with peritoneum

-It reflects off the wall and onto the organs forming parietal peritoneum (abdominal walls) and visceral peritoneum (covers suspended organs)

abdominal cavity

19

found suspended from abdominal walls by mesenteries

Intraperitoneal structures

20

are not suspended but lie between the parietal peritoneum and abdominal wall

Retroperitoneal structures

21

-the inferior thoracic aperture
-enclosed by the diaphragm

The superior thoracic aperture of the abdomen

22

-attached to median, medial, and lateral arcuate ligaments

-attaches to the vertebral column via left and right crus

diaphragm

23

continuous with the abdominal cavity at the pelvic inlet

pelvic cavity

24

-formed entirely of bone
-Formed by: sacrum, pubic symphysis, bony rim of pelvic bone

pelvic inlet

25

why are the abdominal and pelvic cavities not in the same plane?

-Because of the orientation of the pelvis relative to the vertebral column
-hips rotated up

26

connects to the thoracic cavity, pelvic cavity, and lower limbs

abdominal cavity

27

continuous between abdominal and pelvic cavities

peritoneum

28

communicates with the lower limb through an aperture formed by the inguinal ligament, inferior abdominal wall, and pelvic bone

abdominal cavity

29

what structures pass through the aperture that the abdominal cavity communicates with the lower limb through?

-major arteries and veins
-femoral nerve
-lymphatics
-distal ends of psoas major
-iliacus muscles

30

-begins as tube oriented longitudinally in the abdominal cavity

gut tube (developmentally)