Anterolateral muscles

Question 1

What are the flat muscles of the anterolateral compartment of the abdomen?

Answer 1

External oblique
internat oblique
transversus abdominus

Question 2

What are the vertical muscles of the abdomen?

Answer 2

rectus abdomonis

pyramidalis MM

Question 3

What is the purpose of the ab wall MM?

Answer 3

keep viscera in ab cavity
protects viscera from injury
help maintain viscera from injury in erect position
contraction assist in quiet and forced expiration
increases intra abdominal pressure (for childbirth, micturition,defacation)

Question 4

Where are the external oblique MM?

Answer 4

most superficial MM right under the superficial fascia

Question 5

Where does the external oblique MM insert to?

Answer 5

joins with other posterior wall muscles to form the aperneurosis making the alba

Question 6

Where does the line alba extend from?

Answer 6

xyphoid process to pubic symphisis

Question 7

What does the lower border of the external aponurosis formm?

Answer 7

inguinal ligament

passes between the ASIS laterally and the pubic tubercle medially

Question 8

What is the next muscle group deep to external abdomenis muscles?

Answer 8

internal oblique
thinner and smaller ends
ends on the aponurosis that makes the line alba

Question 9

Which direction does external oblique MM pass?

Answer 9

inferior medial

Question 10

Which direct does the internal oblique MM pass?

Answer 10

superior medial

Question 11

What MM are deep to internal oblique MM?

Answer 11

transversus abdominis
muscle fibers are transverse
ends n apeunorsis which blends with other ab MM to make line alba

Question 12

What is each layer of muscle is covered by on its anterior and posterior surfaces?

Answer 12

a fascia

Question 13

What is the fascia that is deep to the transverses abdomens MM?

Answer 13

transversalis fascia

continous fascia that covers the abdominal cavity. it is thick or thin in some areas

Question 14

What is the vertical MM in front of the ab wall?

Answer 14

Rectus abdominis
extends length of anterior ad wall from costal margin to pubic symphysis
paired muscle that connects to the line alba

Question 15

What interrupts the rectus abdominis muscle?

Answer 15

3 or 4 tendinous intersections

gives that six pack

Question 16

what is the pyramidal is MM?

Answer 16

vertical muscle that is anterior to rectus abdomens and its base on the pubic symphysis. apex superior lateral on line alba
may be absent

Question 17

What encloses the rectus abdomens Muscle and the pyramdalis muscle?

Answer 17

rectus sheet

Question 18

How does the rectus sheet covers the rectus abdominis muscles in the upper 3/4 region?

Answer 18

anterior wall - external oblique apernuerosis, 1/2 of the internal oblique aponeurosis

posterior wall - 1/2 of internal oblique aponeurosis, aponeurosis of the transverses abdomens MM

Question 19

how does the rectus sheath covers the rectus abdomens MM on the lower 1/4 half?

Answer 19

all of the aponeurosis move anterior to the rectus abdominis

rectus abdominis sits on the transversals fascia

Question 20

What is the 3/4 and 1/4 half of the rectus abdomens?

Answer 20

halfway between the pubic symphysis and the umbilicus and the pubic symphysis
this called the arcuate line

Question 21

What is the extra peritoneal fascia?

Answer 21

fascia that is deep to the transversals fascia covers entire ab cavity. covers blood vessels and extends into mesenteries

Question 22

What are viscera called that is covered by extra peritoneal fascia?

Answer 22

retroperitoneal