Exam #3 In-Class Questions

Question 1

Which of the following best describes the olfactory mucosa?

a. stratified columnar epithelium with goblet cells and a distinct basement membrane
b. simple ciliated columnar epithelium with goblet cells and a distinct basement membrane
c. stratified, non-keratinized epithelium lacking goblet cells with a thick basement membrane
d. pseudostratified columnar epithelium lacking goblet cells with no distinct basement membrane

Answer 1

d. pseudostratified columnar epithelium lacking goblet cells with no distinct basement membrane

Question 2

Which of the following is NOT a necessary part of the respiratory membrane?

a. pneumocyte I
b. basal lamina of pneumocyte I
c. dust cells (pulmonary macrophages)
d. basal lamina of endothelial cell
e. endothelial cell

Answer 2

c. dust cells (pulmonary macrophages)

Question 3

Which of the following is characteristic of an arteriole?

a. thick tunica adventitia and large lumen
b. thick tunica media in relation to size of lumen
c. thin tunica media and relative large lumen
d. large blood-filled lumen
e. large amounts of elastic fibers in the tunica media

Answer 3

b. thick tunica media in relation to size of lumen

Question 4

Where in the body of a normal healthy individual would you expect most erythrophagocytosis to be occurring?

a. marginal zone of spleen
b. medulla of thymus
c. hematopoietic cord in bone marrow
d. Cord of Billroth in spleen
e. paratrabecular sinus in lymph node

Answer 4

d. Cord of Billroth in spleen

Question 5

Which of the following sequences best describe the flow of RBCs through spleen?

a. trabecular arteries, central arteries, splenic arteries, penicillus, venous sinuses
b. splenic artery central arteries, trabecular arteries, venous sinuses, penicillus
c. trabecular arteries, splenic arteries, central arteries, penicillus, venous sinuses
d. splenic arteries, trabecular arteries, central arteries, penicillus, venous sinuses

Answer 5

d. splenic arteries, trabecular arteries, central arteries, penicillus, venous sinuses

Question 6

The simple cuboidal epithelium of this portion of the kidney tubule is composed of cells in the form of truncated pyramids which are characterized by basal striations that mark the location of mitochondria.

a. proximal convoluted tubule
b. descending thin segment of the loop of Henle
c. ascending thick segment of the loop of Henle
d. distal convoluted tubule
e. collecting duct

Answer 6

a. proximal convoluted tubule

Question 7

Renin is secreted by which of the following?

a. liver
b. macula dense cells
c. atrial cells of the heart
d. mesangial cells
e. juxtaglomerular cells

Answer 7

e. juxtaglomerular cells