Abdominal Muscles A&P

Question 1

most of the abdominal wall extends between the _____ and _____

Answer 1

thoracic cage and pelvis

Question 2

4 paired muscles in the anterior abdominal wall

Answer 2

1. external oblique
2. internal oblique
3. transversus abdominis
4. rectus abdominis (one strap like muscle)

Question 3

largest and most superficial bilaterally paired flat muscle of the abdomen

Answer 3

external oblique muscle

Question 4

what muscle is located in the anterolateral aspect of the abdominal wall?

Answer 4

external oblique muscle

Question 5

intermediate layer of the 3 bilaterally paired flat muscles

Answer 5

internal oblique muscle

Question 6

innermost layer of the bilaterally paired flat muscles

Answer 6

transversus abdominis

Question 7

seen posterior to the transversus abdominis and is an important landmark for hernia

Answer 7

transversalis fascia

Question 8

two longitudinally oriented muscles extending from the xiphoid process to the pubic bone

Answer 8

rectus abdominis

Question 9

____ covers the rectus abdominis muscle anteriorly and posteriorly

Answer 9

rectus sheath

Question 10

rectus sheath joins at the midline to form the ____

Answer 10

linea alba

Question 11

3 pair of muscles in the posterior abdominal wall

Answer 11

1. psoas major
2. quadratus lumborum
3. iliacus

Question 12

powerful muscle that passes from the abdomen to the thigh

Answer 12

psoas major

Question 13

lateral to the psoas muscle

kidneys sit on both muscles

Answer 13

quadratus lumborum

Question 14

what muscles lie along the lateral side of the psoas major?

Answer 14

iliacus and quadratus lumborum

Question 15

seperates the chest cavity from the abdominal cavity

Answer 15

diaphragm

Question 16

what is crura?

Answer 16

muscular attachment of the diaphragm to the lumbar vertebrae

Question 17

is the right or left crura usually bigger?

Answer 17

right