General Anatomy- Reticuoloendothelial anatomy

Question 1

cortex makeup of a lymph node and what is made in each section (outer + inner)

Answer 1

outer- consists of mature B cells organized into follicles (follicles have germinal renters activated B cells

Inner- Mature T cells mainly

Question 2

what does the medulla of a lymph node contain

Answer 2

lymphocytes, plasma cells, macrophages

Question 3

flow of lymph thru lymph node

Answer 3

afferent vessels toward cortex to pass thru subs capsular sinuses and into cortical sinuses

-eventually drains thru medullary sunrises then into efferent lymphatic vessels

Question 4

what do the sinuses of the lymph node contain

Answer 4

macrophages and reticular fibres arranged in a crisscross fashion which act like a filter

Question 5

what is the largest aggregation of lymph tissue

Answer 5

spleen
lies between 9-11 ribs of left midaxillary line

Question 6

spleen is attached by what two ligs and what do the ligs contain

Answer 6

1. gastrosplenic lig (short gastric and left gastroepiploic aa/v)
2. Splenorenal lig (terminal part of splenic aa)

Question 7

what is the liver covered by

Answer 7

covered almost completely by visceral peritoneum except region bounded by coronary lig (bare area)

Question 8

what are the 4 anatomic lobes and 2 functional lobes

Answer 8

right, left, quadrate, caudate

Right functional lobe- supplied by r hepatic aa

left functional lobe- supplied by left hepatic aa

Question 9

what are the functional units of the liver and what are they lined by

Answer 9

functional units of sinusoids lined by hepatocytes and Kumpffer cells

Question 10

what are sinusoids fed by and where do they drain into

Answer 10

fed by branches of hepatic artery and tributaries of the portal vein (supplies 70%)

-drains into the central veins -> 3 hepatic veins-> IVC

Question 11

where does bile exit from the liver

Answer 11

right and left hepatic ducts drain bile from liver (located in the porta hepatic)- both join to form common hepatic duct

Question 12

what is located in aorta hepatic

Answer 12

left and right hepatic aa, right and left tributaries of the portal vein, autonomic nerves and lymphatic vessels

Question 13

what does the common hepatic duct join w to form

Answer 13

joins w cystic duct (from gall) to form common bile duct

common bile duct joins w main pancreatic duct to go to ampulla of vater

Question 14

what is the ampulla of water controlled by

Answer 14

under the influence of CCK which is secreted by small intestine in response to presence of fat in duodenum

Question 15

What is the thymus derived from

Answer 15

3rd pharyngeal pouch along w the inferior parathyroid glands

Question 16

what is the thymus supplied by

Answer 16

branches from the ant intercostal and internal thoracic arteries

Question 17

what is the cortex and medulla of thymus comprised of

Answer 17

cortex- immature and mature T cells

medulla- lymphocytes and Hassalls corpuscles

Question 18

What are Hassals corpuscles

Answer 18

oval bodies made up of a central area of degenerated cells surrounded by concentricaly arranged flattened keratinized epithelial cells

Question 19

route of the thoracic duct (from low to high)

Answer 19

passes thru diaphragm at T12 to right of aorta

-crosses from R to L at T4/5 in post mediastinum
-assends to left neck to empty into the junction of left internal jug/subclavian veins

Question 20

where does the thoracic duct drain from

Answer 20

lower half of body
left half of head and neck
left half of chest