EVERYDAY SCIENCE

SCIENCE

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which statement best describes a reflex arc?
A
Slow response that you have to think about
B
Rapid response to protect body from harm
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Reflexes protect your body from things that can harm it. For example, if you put your hand on a hot stove, a reflex causes you to immediately remove your hand before a “Hey, this is hot!” message even gets to your brain.

Detailed explanation-2: -Final answer: A reflex arc in man is best described as the movement of stimuli from receptor cells, sensory neurons, relaying neurons, and effector’s muscles.

Detailed explanation-3: -A reflex arc is a neural pathway that controls a reflex. In vertebrates, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord. This allows for faster reflex actions to occur by activating spinal motor neurons without the delay of routing signals through the brain.

Detailed explanation-4: -The part of the reflex arc receives sensory information and signals the body parts to respond to a stimulus produced by the surface receptor called the integration center. Hence, the correct answer is (e) Integration center.

There is 1 question to complete.