GA Lab 1 - Anterior Abdominal Wall, Including Inguinal Region

Question 1

What layer of the anterior abdominal wall helps to form the fundiform ligament of the penis?

Answer 1

Scarpa’s fascia

Question 2

What is the iliac fossa?

Answer 2

Concave anterior surface of the pelvic bone

Question 3

What 2 parts of the pelvic bone lie on the same coronal plane?

Answer 3

Pubic tubercle and ASIS

Question 4

What is the sacral promontory?

Answer 4

Anterior edge of of vertebral body S1 that projects forward

Question 5

What is the sacrum formed by?

Answer 5

Fused 5 sacral vertebrae

Question 6

What does the sacrum articulate with superiorly and inferiorly?

Answer 6

Vertebra L5 and the coccyx

Question 7

In which region of the abdomen is Scarpa’s fascia more prominent than Camper’s fascia?

Answer 7

Below the umbilicus

Question 8

What is the scrotal ligament? Embryological derivation? Purpose?

Answer 8

Ligament that secures the testis to the most inferior portion of the scrotum

• Remnant of gubernaculum in a fetus
• Tethering it in place and limiting the degree to which the testis can move within the scrotum

Question 9

What is the scrotal septum?

Answer 9

Vertical layer of fibrous tissue that divides the two compartments of the scrotum

Question 10

What is the tunica albuginea?

Answer 10

Layer of connective tissue covering the testicles

Question 11

Location of lymphatics to testes?

Answer 11

Inside the internal spermatic fascia

Question 12

3 parts of epididymis? Describe each.

Answer 12

1. Head: superior posterior pole made of the efferent ductules
   TRUE EPIDIDYMIS:
2. Body: single long coiled duct where all efferent ductules drain along posterolateral margin of testis
3. Tail: inferior pole of the testis with enlarged portion of epididymis

Question 13

Function of epididymis?

Answer 13

Maturation and storage of sperm

Question 14

Other name of ductus deferens? What does it originate from?

Answer 14

Vas deferens

Originates from tail of epididymis

Question 15

Function of pampiniform plexus of veins of the spermatic cord?

Answer 15

To cool the blood of the testicular artery

Question 16

Does the ilio-inguinal nerve L1 run in the spermatic cord?

Answer 16

NOPE

Question 17

Embryological origin of round ligament of uterus?

Answer 17

Long distal part of the original gubernaculum in the fetus

Question 18

Does the size of the greater omentum vary per person?

Answer 18

YUP

Question 19

Function of genitofemoral nerve?

Answer 19

It innervates the cremaster muscle and the femoral division supplies cutaneous sensation to the upper thigh

Question 20

Dermatome of groin region?

Answer 20

L1

Question 21

In the supine position, what is the lowest point in the peritoneal cavity where fluids can accumulate? Why is this clinically significant?

Answer 21

In the hepatorenal recess (aka Morrisson’s pouch) = most likely intraperitoneal site for infection, blood, urine, etc, to collect

Question 22

Are mesenteries continuations of the visceral and parietal peritoneum?

Answer 22

YUP

Question 23

Are the greater and lesser omentum considered visceral or parietal periotoneum or neither?

Answer 23

Visceral peritoneum

Question 24

How many inferior epigastric vessels are there?

Answer 24

3: 2 veins and 1 artery

Question 25

I the gastrophrenic ligament considered part of the greater omentum?

Answer 25

NOPE

Question 26

Which branch of the celiac trunk is the shortest?

Answer 26

Common hepatic artery

Question 27

Which part of GIT is located posterior to SMA and anterior to IMA?

Answer 27

Duodenum

Question 28

Which arteries receive blood from both celiac trunk and SMA?

Answer 28

Anterior and posterior pancreaticoduodenal arteries

Question 29

Can a peptic ulcer cause a pneumopericardium?

Answer 29

Very rare, but possible

Question 30

When standing up, what is the most likely intraperitoneal site for infection, blood, urine to collect?

Answer 30

Lowermost peritoneal recess in the pelvis:

• Men: rectovesical pouch between the rectum and the bladder
• Women: rectouterine pouch between the uterus/posterior fornix and the rectum

Question 31

How does movement of pus/fluid within the peritoneal cavity occur?

Answer 31

Via the paracolic gutters