Muscles - Back & Abdomen

Question 1

diaphragm

Answer 1

Located below the lungs
Helps breathe
Prime mover of inspiration

Question 2

external intercostals

Answer 2

intercostal = between ribs

Pulls rib towards one another to elevate rib cage (inspiration)

Question 3

external oblique

Answer 3

Most superficial to the lateral muscles
Flex the vertebral column
Compress abdominal wall
Help aid rotating trunk laterally

Question 4

internal intercostals

Answer 4

intercostal = between rib cage

Pulls rib together and depress the rib cage (expiration)

Question 5

internal oblique

Answer 5

Deep to external oblique
Flex the vertebral column
Compress abdominal wall
Help aid rotating trunk laterally

Question 6

rectus abdominis

Answer 6

rectus because muscle fibers are running vertical
Help flex and rotate the lumbar region of vertebral column
Help fix and depress the ribs
Stabilize pelvis

Question 7

transverse abdominis

Answer 7

Deep to rectus abdominis

Depress the abdominal contents