問題一覧
1
The brain neurotransmitters that may have opioid (pain relieving) properties is:
all of these are correct;
2
Which of the following statements about nitric oxide (NO) is false?
NO is occasionally used by dentists as analgesic;
3
Normal breath rate (breaths/minute) in adults at rest is:
16-18;
4
Where is the lowest partial pressure of oxygen?
venous blood;
5
Which of the following factors DOES NOT have any effect on the oxyhemoglobin saturation curve?
bloodstream velocity;
6
Which of the following statements is best suited to describe the functional residual capacity?
expiratory reserve volume and residual volume;
7
The diffusion of oxygen from lungs to blood is assured by:
pressure gradient between pO2 inalveolar air and pO2 in venous blood;
8
During inspiration, alveolar pressure:
lower than atmospheric pressure;
9
The transection of the spinal cord at C1 level will cause:
apnea;
10
Which breathing phase is passive?
quiet expiration;
11
The peripheral chemoreceptors are located in:
carotid bodies and aortic arch;
12
Which of the following processes is used for gas exchange in lungs?
diffusion;
13
Which of the following processes is used for gas exchange in tissues?
diffusion
14
Which is the value of pleural pressure during quiet inspiration?
-6 mm Hg;
15
Which is the value of dead space?
150 ml;
16
Which is the value of total lung capacity?
5000-6000 ml;
17
The pneumotaxic center is located in:
pons;
18
. In the case of pneumothorax, the pleural pressure:
is the same as atmospheric pressure;
19
Which volumes remain in the lungs after a quiet expiration?
residual volume and expiratory reserve volume;
20
What segment of the basilar membrane oscillates with large amplitude at low- frequency sounds:
distal segment;
21
The change of membrane potential in the receptor as result of sensory stimuli is called :
receptor potential
22
Choose the types of excitation of mechanoreceptors:
deformation of the receptor;
23
Choose the types of excitation of mechanoreceptors of the skin:
deformation of the receptor;
24
Choose the types of excitation of photoreceptors:
electromagnetic radiation;
25
Choose the types of excitation of photoreceptors:
light
26
Choose the types of excitation of olfactory receptors:
binding a substance to the membrane of the receptor;
27
Choose the types of excitation of taste receptors:
binding a substance to the membrane of the receptor;
28
Choose the types of excitation of thermoreceptors:
change in temperature of membrane of receptor;
29
What substance of those listed is the most painful:
bradykinin;
30
The opiate system of brain:
) is analgesic part of the brain;
31
The autonomic control of eye accommodation to light is provided by:
parasympathetic nervous system;
32
The presbyopia appears in the result of:
decreased elasticity of the lens;
33
The cataract is the result of :
clouding of the lens;
34
The correction of astigmatism is done by:
cylindrical lenses;
35
What structure of the eye secrets aqueous humor :
ciliary body;
36
What are the changes of the far point of clear vision in myopia:
approaches
37
What are are the changes of the proximal point of clear vision in presbyopia:
b) moves away;
38
What are the changes of the proximal point of clear vision in hyperopia:
moves away;
39
The visual pigment of the rods is called :
rhodopsin
40
What is the cause of hemeralopia (night blindness):
severe lack of vitamin A;
41
The nervous system interpret different sensations of color depending on:
power of stimulation of the three types of cones
42
The deficiency of color vision is due to
lack of different types of cones;
43
What type of cell is not part of retina:
external ciliated cells;
44
Lack of visual perception in different areas of the visual field is called
hemianopsia;
45
The bitemporal hemianopsia occurs when sensory signals are not transmitted:
through the fibers that cross in the optic chiasma;
46
Binasal hemianopsia occurs when visual sensory signals are not transmitted:
through the fibers that do not cross in the optic chiasma;
47
Homonymous hemianopsia occurs when visual sensory signals are not transmitted:
through the fibers that cross in the optic chiasma;
48
Left homonymous hemianopsia occurs when visual sensory signals are not transmitted:
by the right optic nerve;
49
Right homonymous hemianopsia occurs when visual sensory signals are not transmitted:
by the left optic nerve
50
What is anisocoria:
different diameter of the pupils;