A doctor asked a patient to breath out fully after taking a normal breath. What muscles contract



During such exhalation?  

A Abdominal muscles

B External intercostal muscles

C Diaphragm

D Trapezius muscles

E Pectoral muscles

      141

A man was intoxicated with mushrooms. They contain muscarine that stimulates muscarinic

Cholinoreceptors. What symptoms signalize intoxication with inedible mushrooms?

A Myotic pupils

B Mydriatic pupils

C Bronchi dilatation

D Increased heart rate

E Rise of arterial pressure

      142

A man presents with increased heart rate, mydriatic pupils, dry mouth. This condition results

From the activation of the following system of function regulation:

A Sympathetic

B Parasympathetic

C Metasympathetic

D Vago-insular

E Hypothalamo-pituitary-adrenal

      143

In course of an experiment a peripheral section of vagus of an expiremental animal is being

Stimulated. What changes will be observed?

A Heart rate fall

B Heart hurry

C Pupil dilation

D Increase of respiration rate

E Bronchi dilation

      144

Voluntary breath-holding caused increase of respiration depth and frequency. The main factor

Stimulating these changes of external respiration is:

A Increased tension of CO2 in blood

B Increased tension of O2 in blood

C Decreased tension of O2 in blood

D Decreased tension of CO2 in blood

E Decreased concentration of H+ in blood

      145

A patient has delayed conduction of excitement through the atrioventricular node. What changes

Of ECG will be observed?

A Prolongation of P-Q interval

B Prolongation of Q-S interval

C Negative T wave

D S-T-segment displacement

E Prolongation of Q-T interval

      146

Surface with an intact toad on it was inclined to the right. Tone of extensor muscles became

Reflectory higher due to the activation of the following receptors:

A Vestibuloreceptors of utricle and saccule

B Vestibuloreceptors of semicircular ducts   

C Mechanoreceptors of foot skin

D Photoreceptors of retina

E Proprioreceptors

      147

In course of an experiment a toad's right labyrinth was destroyed. It will cause amyotonia of the

Following muscles:

A Right extensors

B Left flexors

C Left extensors

D Right flexors

E Right and left extensors

      148

An animal has an increased tonus of extensor muscles. This the result of intensified information

Transmission to the motoneurons of the spinal cord through the following descending pathways:

A Vestibulospinal

B Medial corticospinal

C Reticulospinal

D Rubrospinal

E Lateral corticospinal

      149

Workers of a hothouse farm work under conditions of unfavourable microclimate: air

temperature is +37oC, relative humidity is 90%, air speed is 0,2 m/s. The way of heat

Emission under these conditions will be:

A Evaporation

B Heat conduction

C Convection

D Radiation

E All the ways

      150

Lungs of a preterm infant have areas of atelectasis (pulmonary collapse). The main cause is:

A Surfactant deficiency

B Increased viscous resistance

C Underdeveloped inspiration muscles

D Diminished force of surface tension of lungs

E Surfactant excess

      151

Vagi of an experimental animal were cut on both sides. What respiration changes will be

Observed?

A It will become deep and infrequent

B It will become shallow and frequent

C It will become deep and frequent

D It will become shallow and infrequent

E No changes will be observed

      152

A cardiac electric stimulator was implanted to a 75 year old man with heart rate of 40 bpm.

Thereafter the heart rate rose up to 70 bpm. The electric stimulator has undertaken the function

Of the following heart part:

A Sinoatrial node

B Atrioventricular node

C His' bundle branches

D His' bundle fibers

E Purkinje's fibers

      153

A patient came to the hospital complaining about quick fatigability and apparent muscle

Weakness. Examination revealed an autoimmune disease that causes disorder of functional

Receptor condition in neuromuscular synapses. What transmitter will be blocked?

A Acetylcholine

B Noradrenalin

C Dopamine

D Serotonin

E Glycine

      154

Which muscle contraction will be observed in the upper extremity during holding (not moving) a

Load in a certain position?

A Isometric

B Isotonic

C Auxotonic

D Concentric

E Excentric

      155


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