Intrapleural pressure is being measured in a person. In what phase has a person hold his breath
if the pressure is - 25 cm H2O?
A Speed up inspiration
B Calm expiration
C Calm inspiration
D Speed up expiration
E -
51
On examination of the person it was revealed that minute volume of heart is 3500 mL, systolic
Volume is 50 mL. What is the frequency of cardiac contraction?
A 70 bpm
B 60 bpm
C 50 bpm
D 80 bpm
E 90 bpm
52
Due to activation of ion channels of external membrane of excitable cell it's rest potential has
Significantly increased. What channels were activated?
A Potassium channels
B Natrium channels
C Fast calcium channels
D Slow calcium channels
E Natrium and calcium channels
53
The ventral roots of 5 frontal segment of spinal cord were cut during experiment in the animal.
What changes will take place in the innervation region?
A Loss of movements
B Loss of touch sensitivity
C Loss of temperature sensitivity
D Loss of proprioceptive sensitivity
E Hypersensitivity
54
Glomerular filtration rate (GFR) increased for 20% due to prolonged starvation of the person.
The most likely cause of filtration changes under this conditions is:
A Decrease of oncotic pressure of blood plasma
B Increase of systemic blood pressure
C Increase of penetration of the renal filter
D Increase of filtration coefficient
E Increase of renal plasma stream
55
A patient has a transverse disruption of spinal cord below the IV thoracic segment. What
Changes of respiration will it cause?
A Respiration will stay unchanged
B Respiration will stop
C Respiration will become less frequent
D Respiration will become deeper
E Respiration will become more frequent
56
Due to cranial trauma the patient developed the symptoms: intention tremor, dysmetry,
Adiadochokinesis, dysarthria. What structure of the brain is injured?
A Cerebellum
B Striatum
C Motor cortex
D Pale sphere
E Black substance
57
A lightly dressed man is standing in a room, air temperature is +140C, windows and doors
Are closed. In what way does he emit heat the most actively?
A Heat radiation
B Heat conduction
C Convection
D Evaporation
E Perspiration
58
ECG of a patient with hyperfunction of thyroid gland showed heart hurry. It is indicated by
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Depression of the following ECG element:
A R-R interval
B P-Q segment
C P-Q interval
D P-T interval
E QRS complex
59
A peripheral segment of vagus nerve on a dog's neck was being stimulated in course of an
Experiment. The following changes of cardiac activity could be meanwhile observed:
A Heart rate fall
B Heart hurry
C Enhancement of atrioventricular conduction
D Heart rate and heart force amplification
E Increased excitability of myocardium
60
ECG of a patient shows prolongation of T-wave. This is caused by deceleration in ventricles of:
A Repolarization
B Depolarization and repolarization
C Depolarization
D Contraction
E Relaxation
61
In a healthy adult speed of the excitement conduction through the atrioventricular node is
M/sec. Atrioventricular delay enables:
A Sequence of atrial and ventricular contractions
B Simultaneity of both atria contractions
C Simultaneity of both ventricles contractions
D Sufficient force of atrial contractions
E Sufficient force of ventricular contractions
62
A 2 y.o. child has convulsions as a result of lowered concentration of calcium ions in blood
Plasma. It is caused by reduced function of:
A Parathyroid glands
B Hypophysis
C Adrenal cortex
D Pineal gland
E Thymus
63
What heat transfer mechanism is the most effective while the man being at 80% of air moisture
and the temperature +350 С ?
A Evaporation
B Radiation
C Heat conduction
D Convection
E --
64
During preparation of a patient to a heart surgery it was necessary to measure pressure in
Heart chambers. In one of them pressure varied from 0 mm Hg up to 120 mm Hg within one
Cardiac cycle. What heart chamber is it?
A Left ventricle
B Right ventricle
C Right atrium
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D Left atrium
E -
65
Heart rate of a man permanently equals 40 beats pro minute. What is the pacemaker?
A Atriventricular node
B Sinoatrial node
C His' bundle
D His' bundle branches
E Purkinje's fibers
66
Stimulation of an excitable cell by the electric current has led to the depolarization of its
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