Question

Which one of the following reflex occurs without the help of brain?

• A. Cranial reflex
• B. Spinal reflex
• C. Efferent reflex
• D. Afferent reflex

Answer 1

The correct option is B Spinal reflex

Reflex is an involuntary action caused by the integration of sensory and motor nerves in the central nervous system. Sensory nerves transmits the nerve impulse from the effector organ to the CNS while motor nerves transmits the nerve impulse from the CNS to the effector.

a) Cranial reflex is an involuntary action caused by the integration of sensory and motor nerves in the brain.

b) Spinal reflex is an involuntary action caused by the integration of sensory and motor nerves in the spinal chord.

c) Efferent reflex is an involuntary action caused by the integration of motor nerves with the help of brain.

d) Afferent reflex is an involuntary action caused by the integration of sensory nerves with the help of brain.

So, the correct answer is option B.