Nervous system (class-7)

What is the structural unit of the nervous system?

(a)  

Name the following

a) The cell body of the neuron

• Cell body

• Cyton

• Nucleus

• Neurpn

The human brain is estimated to have about ___ nerve cells

• 100 million

• 100 billion

• 1000 million

• 1000 billion

The message that travels along a nerve is called

• stimulus

• response

• sensation

• impulse

The ___ nervous system comprises the nerves arising from the brain and spinal cord

• central

• peripheral

• autonomic

• structural

Answer explanation

The central nervous system is wrong because they are the main parts but the question is asking

-"arising from" NOT

-"comprised of"

What is number 1?

(a)  

The brain is enveloped by three membranes called

• Mening

• Meninges

• Tri-membranes

• Three membranes

Breathing and heartbeat are controlled by ___

• cerebellum

• cerebrum

• spinal cord

• medulla

It is a junction where connection between two neuron occurs

(a)  

Sensory nerves carry impulses from the spinal cord to the sense organs

• True

• False