Menna Abdel-Dayem
Professor of Histology, Kasr Al Ainy School of Medicine
Faculty of Medicine, Kasr Al- Ainy, Cairo University, Postal Code: 11559 (email)
Urinary system
MCQ
1. The striated appearance of the medullary pyramid is produced by parallel alignment of
- a) supporting connective tissue septa
- b) loops of Henle and collecting tubules
- c) chords/clumps of cells separated by capillaries
- d) medullary rays
- e) proximal and distal tubules
2. Which of the following is NOT true of the JG cell?
- a) They function as pressure or mechanoreceptors
- b) They are located in the tunica media of the afferent arteriole
- c) They stimulate the angiotensin system to regulate blood pressure
- d) They contain granules of stored renin
- e) All the statements are true
3. Which of the following is NOT true of proximal convoluted tubules?
- a) They are found in the cortex of the kidney lobe
- b) They are the longest tubule of the nephron
- c) They are surrounded by a thin layer of fibroelastic connective tissue
- d) The cells of tubules stain acidophilic
- e) The cells of tubules possess microvilli
4. In comparing the histology of the ureter and the bladder, the bladder is larger with an extra
- a) dense fibroelastic connective tissue in the lamina propria
- b) submucosal layer
- c) irregularly shaped pieces of elastic cartilage
- d) mucus glands
- e) all of the above
5. Distal convoluted tubules differ from proximal convoluted tubules in that distal tubules
- a) have decreased cytoplasmic eosinophilia
- b) have epithelium lacking a brush border
- c) are smaller tubes with larger lumens
- d) function as osmoreceptors
- e) all of the above
6. The renal corpuscle
- a) is the blind end of a proximal convoluted tubule
- b) is composed of a parietal layer of simple squamous epithelium
- c) is composed of a visceral layer of podocytes
- d) contains a tuft of capillaries supported internally by mesangial cells
- e) all of the above
7. In the kidney, the large arteries that cross at the border of the cortex and medulla of each lobe are
- a) lobar arteries
- b) juxtamedullary arteries
- c) arcuate arteries
- d) interlobar arteries
- e) intralobar arteries
8. Podocytes
- a) make-up the visceral layer of Bowman’s capsule
- b) surround the continuous capillaries of the glomerulus
- c) possess numerous small projections producing filtration slits
- d) synthesize a thick fibroelastic basement membrane
- e) all of the above
Answers:
1) b
2) e
3) c
4) a
5) e
6) a
7) c
8) e
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