KROK 1 2013 – Question 117 · KROK (Medicine) · Physiology
An animal has an increased tonus of extensor muscles. This is the result of enhanced information transmission to the motoneurons of the spinal cord through the following descending pathways:
- A. Lateral corticospinal
- B. Reticulospinal
- C. Rubrospinal
- D. Vestibulospinal
- E. Medial corticospinal
Hint
Compare the descending tracts by their origin and by whether they drive extensor or flexor motoneurons, and recall which one belongs to the antigravity system.
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
- A 19-year-old male was found to have an elevated level of potassium in the secondary urine. These changes might have been caused by the increase in…
- ECG of a patient displays an abnormally long R wave (up to 0,18 s). This is caused by a decrease in the conduction velocity of the following heart…
- A 46-year-old female is scheduled for a maxillofacial surgery. It is known that the patient is prone to high blood coagulation. What natural…
- To assess the effectiveness of breathing in patients, the indicator of functional residual capacity is used. It includes the following volumes:
- It is required to evaluate the level of tissue excitability. For this purpose one should determine:
- Due to the use of poor-quality measles vaccine for preventive vaccination, a 1-year-old child developed an autoimmune renal injury. The urine was…