Blood Vessels

Question 1

Branches of celiac trunk

Answer 1

@ T12
Left gastric a.
Splenic a.
Common hepatic a.

Question 2

Branches of SMA

Answer 2

@ L1
Inferior pancreaticoduodenal a. 
Middle colic a. 
Right colic a. 
Iliocolic a.

Question 3

Branches of IMA

Answer 3

@ L3
Left colic a.
Sigmoid aa.
Superior rectal a.

Question 4

Suprarenal aa.

Answer 4

L1

Paired Visceral

Question 5

Renal aa.

Answer 5

L1/L2

Paired Visceral

Question 6

Gonadal aa.

Answer 6

L2

Paired Visceral

Question 7

Inferior phrenic aa.

Answer 7

T12

Paired parietal

Question 8

Subcostal aa.

Answer 8

T12

Paired Parietal

Question 9

Lumbar aa.

Answer 9

L1-L4

Paired Parietal

Question 10

Foregut Innervation

Answer 10

Para: Vagus
Sym: Thoracic splanchnic nn. (T5-T9)
Referred Pain: Epigastrium

Question 11

Midgut Innervation

Answer 11

Parasympathetic: Vagus
Sym: Thoracic splanchnic nn. (T8-T12)
Referred Pain: Umbilical

Question 12

Hindgut Innervation

Answer 12

Para: Pelvic splanchnic nn.
Sym: Lumbar splanchnic nn. (L1-L2)
Referred pain: Hypogastrium

Question 13

Hepatic Portal v.

Answer 13

75-80% hepatic blood supply

Sustains liver parenchyma

Question 14

Hepatic a.

Answer 14

Sustains non-parenchymal structures (intrahepatic bile ducts)

Question 15

Branches of gastroduodenal a.

Answer 15

Anterior Superior Pancreaticoduodenal a.

Posterior Superior Pancreaticoduodenal a.

Question 16

Nutcracker Syndrome

Answer 16

Loss of mesenteric fat leads to SMA compressing 3rd part of duodenum and left renal v.
Presents w/ potential variocele, proteinuria, hematuria & n/v

Question 17

Origin of Superior rectal a.

Answer 17

IMA

Question 18

Origin of middle rectal a.

Answer 18

Internal iliac aa.

Question 19

Origin of inferior rectal a.

Answer 19

Internal pudendal a.

Question 20

Rectal Drainage (portal system)

Answer 20

Superior rectal v.

Question 21

Rectal Drainage (Caval system)

Answer 21

Middle rectal v.
Inferior rectal v.
Rectal venous plexus

Question 22

Internal Hemorrhoids

Answer 22

• Prolapse of rectal mucosa that contains normally dilated veins of internal venous plexus
• Bright red bleeding
• NOT painful b/c above pectinate line

Question 23

External Hemorroids

Answer 23

• Thromboses in veins of external venous plexus
• Covered by skin
• Painful b/c below pectinate line (inferior anal nerves are somatic)

Question 24

IVC

Answer 24

• Begins anterior to L5 and enters caval opening into diaphragm @ T8
• Right of aorta
• Longer than aorta

Question 25

Esophageal portal-caval anastamosis

Answer 25

- B/w left gastric v and azygos v. - Increased P in liver occludes portal v blood flow — blood flows backwards via left gastric v — esophageal vv — azygos vv. * *Esophageal varices

Question 26

Rectal portal-caval anastamosis

Answer 26

- B/w superior/middle rectal v and inferior rectal v. | * *Hemhorroids

Question 27

Paraumbilical portal-caval anastamosis

Answer 27

- B/w paraumbilical and epigastric vv - Paraumbilical vv reopen * * Caput medusae

Question 28

Retroperitoneal portal-caval anastamosis

Answer 28

- B/w colic vv and systemic retroperitoneal vv - Colic vv and lumbar vv — caval system * * Esophageal varices

Question 29

Sympathetic Abdominal Innervation

Answer 29

- Greater splanchnic (T5-T9) - Lesser splanchnic (T10-T11) - Least splanchnic (T12) - Lumbar splanchnic (L1-L2)

Question 30

Parasympathetic Abdominal Innervation

Answer 30

- Vagus n. (Ant and post trunks) - Pelvic splanchnic nn. (S2-S4) - Abdominal autonomic plexuses and extensions - Intrinsic (enteric) parasympathetic ganglia

Question 31

Vagus N.

Answer 31

Convey presynaptic parasympathetic and visceral afferent fibers to abdominal aortic plexuses

Question 32

Pelvic Splanchnic

Answer 32

- S2-S4 | - Convey PREsympathetic parasympathetic fibers to inferior hypogastric plexus

Question 33

Visceral Afferents and Pain

Answer 33

- Pain travels with sympathetics | - EXCEPT below pelvic line (middle of sigmoid colon), where pain travels with parasympathetics

Question 34

Visceral Afferents and visceral reflexes

Answer 34

Travels with parasympathetics

Question 35

I ate ten eggs at noon

Answer 35

T8 - IVC T10 - esophagus T12 - aorta