nmdcat.online
BIO NMDCAT Brain
nmdcat.online July 7, 2026

21. The crossing of major motor nerve fibers within the medulla oblongata ensures that voluntary movement of one side of the body is controlled by the

A. Same side of the cerebrum
B. Opposite side of the cerebrum
✓
C. Cerebellum only
D. Thalamus only

📝 Explanation

Most motor nerve fibers decussate (cross) in the medulla oblongata. Consequently, the left cerebral hemisphere controls the right side of the body, and the right hemisphere controls the left side.

📖 Additional Information

  • Same side of the cerebrum
  • Opposite side of the cerebrum
  • Cerebellum only
  • Thalamus only

Most motor nerve fibers decussate (cross) in the medulla oblongata. Consequently, the left cerebral hemisphere controls the right side of the body, and the right hemisphere controls the left side.

🔗 Share This Question

Facebook Twitter LinkedIn WhatsApp

🧭 Navigate Questions

Previous Question

20. Among the following statements, the most appropriate explanation for unconscious breathing during sleep is the continuous activity of the

Next Question

22. During an accidental fall, rapid adjustment of muscle tone to restore body balance depends primarily upon the functional integrity of the

Back to All Questions

🔗 Related MCQs

An increase in the incidence of ectopic pregnancies within a population can often be epidemiologically correlated with a prior increase in the prevalence of which sexually transmitted disease?
July 16, 2026
In the life cycle of Herpes Simplex Virus 2 (HSV-2), the virus travels along nerve fibers to reach the sensory ganglia. The cellular mechanism responsible for this retrograde transport utilizes:
July 16, 2026
A defining characteristic of the lesions associated with the secondary stage of syphilis is that they:
July 16, 2026
The causative agent of genital herpes, HSV-2, is enveloped. The biological significance of this viral envelope in the context of transmission is that it makes the virus:
July 16, 2026
The structural basis for the severe cardiovascular complications seen in tertiary syphilis, such as aortic aneurysms, is the chronic inflammation and destruction of:
July 16, 2026

Categories

View all →