Sneezing, yawning etc are examples of _______

(a)

voluntary actions

(b)

involuntary actions

(c)

reflex actions

(d)

planned actions

______ is not a characteristic of neuron.

(a)

dendrites

(b)

axon

(c)

axolemma

(d)

can divide

The axons may be covered by a protective sheath called ______

(a)

Myelin

(b)

Nodes of ranvier

(c)

Schwann cells

(d)

Nissl's granules

______ acts as a insulator.

(a)

myelin sheath(b)

(b)

synaptic junction

(c)

nodes of ranvier

(d)

glial cells

Each neuron can transmit ______ nerve impulses per second.

(a)

10

(b)

1000

(c)

10,000

(d)

1,00,000

What are neuroglia.

Name the parts of a neuron.

Name the meninges.

What is peripheral nervous system.

Tabulate the different parts of the brain and their functions.

Differentiate simple reflexes and conditional reflexes.

Rani fell from her bike and had a head injury. She was hospitalized and discharged later. What do you think she could have done to save herself from this accident.

'A' contains a cerebrospinal fluid filled cavity known as 'B'. How many nerves are produced from A.
(i) What is A?
(ii) What is 'B'?

Illustrate the structure and functions of brain.

What will you do if someone pricks your hand with a needle? Elucidate the pathway of response with a neat labelled diagram.

How nerve impulses are transferred from one neuron to next neuron?