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Histology > Exam 3 Test File > Flashcards

Exam 3 Test File Flashcards

1
Q

The most frequent tumor of diffuse neuroendocrine tissue is

a. Pancreatic adenocarcinoma
b. Colon adenocarcinoma
c. Small cell carcinoma
d. Renal adenocarcinoma
e. Small intestinal adenocarcinoma

A

c. Small cell carcinoma

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2
Q

Intrinsic factor is used for

a. Stimulation of gastric gland secretion
b. Absorption of vitamin b12
c. Conversion of chymotrypsinogen to chymotrypsin
d. Conversion of pepsinogen to pepsin
e. Inhibition of gastric gland secretion and stimulation of gastric motility

A

b. Absorption of vitamin b12

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3
Q

Which portion of the male urethra is lined by transitional epithelium?

a. All urethral segments are lined by urothelium
b. Membranous
c. Spongy
d. Both spongy and membranous
e. Prostatic

A

e. Prostatic

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4
Q

Parasympathetic ganglia within the gut called Auerbach’s plexi are located

a. Within the submucosa
b. Within the muscularis mucosae
c. Within the adventitia
d. Within the epithelium
e. Within the muscularis externa

A

e. Within the muscularis externa

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5
Q

Cirrhosis of the liver is characterized by

a. Necrosis, fibrosis, and nodular regeneration
b. Fibrosis, necrosis, and cholecystitis
c. Glycogenolysis, fatty degeneration, and gluconeogenesis
d. Hepatitis, pancreatitis, and cholecyctitis
e. Hepatitis, fibrosis, and necrosis

A

a. Necrosis, fibrosis, and nodular regeneration

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6
Q

The purpose of the glycoprotein, podocalyxin, in the glomerulus is to

a. Bind with aldosterone
b. Prevent excessive water loss thru filtration slits
c. Increase glomerular permeability to water in response to ADH
d. Selectively resorb Na and K, and secrete H
e. Prevent loss of anions

A

e. Prevent loss of anions

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7
Q 
Which portion of the nephron is the primary component associated with the vasa recta to form the “countercurrent multiplier system”?
A.	Collecting tubules
B.	Distal convoluted tubule
C.	Proximal convoluted tubule 
D.	Loop of Henle
E.	Glomerulus
A

D. Loop of Henle

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8
Q

Chromaffin cells of the adrenal medulla produce

a. Catecholamines
b. Cholesterol
c. Glucagon
d. Cortisol
e. Endorphins

A

a. Catecholamines

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9
Q

Centro-acinar cells of the pancreas

a. Secrete vasoactive intestinal peptide (VIP)
b. Are the functional units of the exocrine pancreas
c. Form the beginning of the intercalated duct
d. Secrete glucagon
e. Secrete insulin

A

c. Form the beginning of the intercalated duct

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10
Q

Tome’s process

a. Is located at the apical, secretory end of ameloblasts
b. Anchors periodontal ligament to alveolar bone
c. Is a large cytoplasmic extension on odontoblasts responsible for the formation of dentine tubules
d. Is located adjacent to Wharton’s duct

A

a. Is located at the apical, secretory end of ameloblasts

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11
Q

Stenson’s duct is associated with which of the following salivary glands?

a. Sublingual
b. Von Ebner’s
c. Parotid
d. Submandibular
e. Accessory

A

c. Parotid

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12
Q

The gallbladder can be differentiated from gut in histologic sections by the absence of?

a. Taenia coli
b. Brunner’s glands
c. A muscularis mucosae
d. Goblet cells
e. Plicae circulares

A

c. A muscularis mucosae

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13
Q

Calcitonin is produced by

a. Pinealocytes of pineal gland
b. Oxyphil cells of parathyroid gland
c. Chief cells of parathyroid gland
d. Pituicytes of posterior pituitary
e. C cells of thyroid gland

A

e. C cells of thyroid gland

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14
Q

The amino acid glutamate is detected by which of the primary taste sensations?

a. Salty
b. Umami
c. Sour
d. Bitter
e. Sweet

A

b. Umami

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15
Q

Unoxygenated, nutrient-rich blood enters liver lobules via

a. Portal V
b. Portal A
c. Central V
d. Lymphatics
e. Bile ducts

A

a. Portal V

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16
Q

The primary site of water resorption in the renal tubule is the

a. Distal convoluted tubule
b. Collecting duct
c. Collecting tubule
d. Loop of henle
e. Proximal convoluted tubule

A

e. Proximal convoluted tubule

17
Q

Paneth cells produce

a. Mucin
b. CCK
c. Secretin
d. Lysozyme
e. Intrinsic factor

A

d. Lysozyme

18
Q

Which of the following epithelia is typically parakeratinized in humans?

a. Masticatory mucosa
b. Esophageal
c. Lining mucosa
d. Specialized mucosa
e. Transitional

A

a. Masticatory mucosa

19
Q

Striated ducts modify salivary secretions by

a. Resorbing potassium and secreting sodium
b. Resorbing bicarbonate and secreting chloride
c. Resorbing sodium and secreting potassium
d. Resorbing chloride and secreting bicarbonate
e. Resorbing potassium and secreting hydrogen

A

c. Resorbing sodium and secreting potassium

20
Q

Juxtaglomerular cells

a. Secrete renin
b. Regulate calcium metabolism
c. Resorb K and secrete H
d. Become permeable to water in presence of ADH
e. Resorb Na and secrete K

A

a. Secrete renin

21
Q

Which of the following enteroendocrine products converts trypsinogen to trypsin?

a. Gastrin
b. Somatostatin
c. Enterokinase
d. CCK
e. Secretin

A

Enterokinase

22
Q

Acromegaly and gigantism are both due to tumors of

a. Gonadotrophs
b. Corticotrophs
c. Thyrotrophs
d. Somatotrophs
e. Mammatrophs

A

Somatotrophs

23
Q

In Addison’s disease, shock and death are precipitated by decreased production of

a. Aldosterone
b. PTH
c. Catecholamines
d. Thyroid hormone
e. Cortisol

A

a. Aldosterone

24
Q

Parietal cells of gastric pits secrete

a. Pepsinogen
b. Insoluble mucus
c. HCl
d. Renin
e. Soluble mucus

A

c. HCl

25
Q

The visceral layer of Bowmann’s capsule is made up of

a. Podocytes
b. Endothelial cells
c. Urothelium
d. Fibroblasts and type I collagen
e. Intercalated cells

A

a. Podocytes

26
Q

Approximately 80& of urinary calculi responsible for nephrolithiasis or urolithiasis in humans are composed of

a. Uric acid
b. Struvite
c. Cholesterol
d. Urea
e. Calcium oxolate

A

e. Calcium oxolate

27
Q

ACE-inhibitors prevent the conversion of

a. Angiotensinogen to angiotensin II
b. Renin to angiotensinogen
c. Angiotensinogen to angiotensin I
d. Angiotensin I to angiotensin II
e. Aldosterone to ADH

A

d. Angiotensin I to angiotensin II

28
Q

Secondary hyperparathyroidism is often associated with

a. Type II diabetes
b. Pituitary adenoma
c. Colon cancer
d. Cirrhosis
e. Renal failure

A

e. Renal failure

29
Q

Which of the following best describes the site of membrane digestion in the small intestine?

a. Within crypts of lieberkuhn
b. Within lamina propria
c. Within enterocytes
d. Within gut lumen
e. Within the glycocalyx

A

e. Within the glycocalyx

30
Q

Taenia coli are formed by

a. The longitudinal layer of the muscularis externa
b. Sacculations of the gut wall
c. Folds of mucosa
d. Circular layer of muscularis externa
e. Reduction of muscularis mucosae

A

a. The longitudinal layer of the muscularis externa

Histology (32 decks)

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