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

In the classification of nerve fibers, Group A fibers are distinguished by their

A. Large diameter and heavy myelination
✓
B. Lack of myelination
C. Slowest conduction velocities
D. Exclusive role in pain transmission

📝 Explanation

Group A fibers (like somatic motor fibers and large sensory fibers for touch and position) are the thickest, most heavily myelinated fibers in the body, providing the fastest nerve conduction velocities.

📖 Additional Information

  • Large diameter and heavy myelination
  • Lack of myelination
  • Slowest conduction velocities
  • Exclusive role in pain transmission

Group A fibers (like somatic motor fibers and large sensory fibers for touch and position) are the thickest, most heavily myelinated fibers in the body, providing the fastest nerve conduction velocities.

🔗 Share This Question

Facebook Twitter LinkedIn WhatsApp

🧭 Navigate Questions

Previous Question

The neuroglial cells that line the ventricles of the brain and assist in the production and circulation of cerebrospinal fluid are

Next Question

1. The region responsible for maintaining heartbeat, breathing, and blood pressure remains functional even during unconsciousness.

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 →