EVERYDAY SCIENCE

SCIENCE

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Sensing hot or cold
A
Central Nervous System (CNS)
B
Peripheral Nervous System (PNS)
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Temperature information is sensed by neurons with cell bodies in primary sensory ganglia (or trigeminal ganglia), and then transmitted to the dorsal horn of the spinal cord (or chief sensory nucleus of V), the lateral parabrachial nuclei and finally the preoptic area.

Detailed explanation-2: -Your PNS feeds information into your brain from most of your senses. It carries signals that allow you to move your muscles. Your PNS also delivers signals that your brain uses to control vital, unconscious processes like your heartbeat and breathing.

Detailed explanation-3: -Sensory neurons are the afferent limb of somatosensory neural pathways. The neuron consists of a cell body, axon, and dendrites. Dendrites are finger-like projections that receive sensory input and transmit the signal through the axon to the cell body.

Detailed explanation-4: -The PNS is a vast network of spinal and cranial nerves that are linked to the brain and the spinal cord. It contains sensory receptors which help in processing changes in the internal and external environment.

There is 1 question to complete.