KROK 1 2012 – Question 131 · KROK (Medicine) · Physiology
A patient presented to a hospital with complaints about quick fatigability and significant muscle weakness. Examination revealed an autoimmune disease that causes functional disorder of receptors in the neuromuscular synapses. This will result in the disturbed activity of the following mediator:
- A. Noradrenaline
- B. Dopamine
- C. Acetylcholine
- D. Glycine
- E. Serotonin
Hint
Think about which neurotransmitter the motor neuron releases onto the skeletal muscle fibre at the end plate, and what happens when its receptors are blocked.
The answer, the explanation and a note on every option are available once you log in. The account is free: topic tests, a mock exam, mistake review and statistics.
More questions on Physiology
- When water affects mucous membrane of the inferior nasal meatuses, this causes "diver reflex" that provokes:
- Microelectrode technique allowed to register a potential following "all-or-none"law and being able of undecremental spreading. Specify this potential:
- A doctor asked a patient to breathe out fully after taking a normal breath. What muscles contract during such exhalation?
- A 23-year-old patient has been admitted to a hospital with a craniocerebral injury. The patient is in a grave condition. Respiration is…
- It has been experimentally proven that the excitation of the motor neurons of flexor muscles is accompanied by the inhibition of the motor neurons…
- A man sitting with his eyes closed, undergoes electroencephalography. What rhythm will be recorded on the EEG if there is an audible signal?