21. The maculae of the vestibular apparatus are located in:
(1) saccule (2) ampullae of semicircular canals (3) utricle (4) cochlea
22. The cristae of the vestibular apparatus are located in:
(1) saccule (2) utricle (3) cochlea (4) ampullae of semicircular canals
23. The movements of the following structures stimulate the vestibular
neuroepithelial cells:
(1) otoliths (2) cupula (3) otolithic membrane (4) tympanic membrane
24. The taste buds are located on the lateral surface of following lingual papillae:
(1) fungiform (2) foliate (3) circumvallate (4) filiform
25. The following statements regarding the taste buds are true:
(1) consist of supporting, neuroepithelial, and basal cells (2) contain taste pits (3) their
taste pores open into the interpapillar space (4) contains neurons
26. The following statements regarding the basal cells of the taste buds are true:
(1) are stem cells (2) give rise to supporting cells (3) give rise to neuroepithelial cells (4)
are neurons
11. CARDIOVASCULAR SYSTEM
Directions
: each of the following statements contains five suggested completions. Choose
the one that is best in each case.
1. Each of the following statements concerning the elastic type arteries is true,
EXCEPT:
A
– their tunica intima is relatively thick, contains smooth muscle cells and elastic fibres;
B
– they are the largest-diameter arteries; C – blood pressure in these arteries is the least;
D
– their internal and external membranes are not conspicuous; E – elastic fenestrated
membranes are predominate in their tunica media.
2. Each of the following statements concerning the arterioles is true, EXCEPT:
A
– the internal elastic membrane may or may not be present in their tunica intima; B –
blood pressure in them is the highest in the arterial bed; C
– their tunica media has one or
two smooth muscle layers; D
– their smooth muscles form precapillary sphincters; E – they
control blood flow to the capillary bed.
3. The microcirculatory bed includes the following vessels, EXCEPT:
A
– arterioles; B – venules; C – capillaries; D – arteriovenous anastomoses (shunts); E –
lymphatic ducts.
4. Each of the following statements concerning the capillaries is true, EXCEPT:
A
– contain smooth muscle cells; B – consist of endothelial cells on the basal lamina; C –
their diameter is often smaller than that of erythrocytes; D
– possess selective
permeability; E
– histamine increases capillary permeability.
5. Each of the following statements concerning the continuous capillaries is true,
EXCEPT:
A
– are endothelial tubules; B – typically found in endocrine glands; C – their endothelial
cells are joined by tight junctions; D
– their endothelial cells abound in pinocytotic vesicles;
E
– pericytes enclosed by the endothelial basal membrane may be found.
6. Each of the following statements concerning the postcapillary venules is true,
EXCEPT:
A
– consist of endothelium on the basal lamina; B – contain pericytes; C – contain smooth
muscle cells; D
– are the sites of histamine action; E – leukocytes emigrate through their
wall into tissues (especially in inflammation and allergic reactions).
7. Each of the following statements concerning the vein structure is true, EXCEPT: