Neuron

Q.

An involuntary response to a stimulus is known as:

1. Reflex action
2. Circulation
3. Reflex arc
4. Locomotion

Q.

What is a bundle of axons known as?

1. Neuron

2. Nerve

3. Cell Body

4. Dendrites

Q.

The neurons which send nerve impulses to the CNS from receptor organs are known as ___ .

1. Central Nervous System, A - Electrical impulse, B - Sensory neuron, C - Motor neuron, D - Nerve ending

2. Central Nervous System, A - Electrical impulse, B - Sensory neuron, C - Motor neuron, D - Nerve ending

3. Neuromuscular junction, A - Cell body, B - Sensory neuron, C - Motor neuron, D - Axon

4. Reflex arc, A - Receptor, B - Sensory neuron, C - Motor neuron, D - Relay neuron

Q.

A sensory neuron transmits impulses from the central nervous system to the receptor.

1. True
2. False

Q.

The neuron which carries nerve impulses from receptors to spinal cord is called sensory neuron.

1. afferent neuron

2. efferent neuron

Q.

In a neuron, the end of the axon is known as _______.

1. nodes of Ranvier

2. axon terminals

3. dendrites

4. cyton

Q. What is the use of electrical impulses in our body?

Q.

How do organs respond to external stimuli?

Q.

Central canal of the spinal cord is surrounded by an H-shaped area called

1. Meninges

2. None of the above

3. White matter

4. Grey matter

Q. How do our nerve cells gets electrical impulses?

Q.

What is the role of myelin sheath in nerve impulse transmission?

1. Has no specific role in nerve impulse transmission.

2. It inhibits the nerve impulse transmission.

3. It insulates the axon and accelerates the nerve impulse transmission.

4. It slows down the nerve impulse transmission.

Q.

Which part of neuron acts as an insulator?

1. Axon

2. Dendrite

3. Cell body

4. Myelin sheath

Q.

The cell body of a neurone is called in axon

Q.

What are neurotransmitters?

Q.

What are the 3 types of neurons?

Q.

Which type of neuron conducts information towards the brain or spinal the cord?

Q.

A synapse is found between

1. dendrite and dendrite

2. axon terminal and axon terminal

3. dendrite and axon terminal

4. All of the above

Q. What is the function of receptors in our body?

1. Receptors pass information in the form of electrical impulses to the brain
2. All information from the environment is detected by receptors
3. Both A and B
4. Receptors pass information in the form of mechanical impulses to the brain

Q. The point of union of axon terminal with the dendrite of a cell body is called

1. None of the above
2. Ganglion
3. Synapse
4. Nerve end

Q.

Axon arises on a conical elevation of the cell body called ___.

Q.

The distribution of different functions among different parts of the organisms body which get specialized for the particular function is called----------.

Q. Which hormone is responsible for the flight-or-fight response?

1. Adrenaline
2. Insulin
3. Sebum
4. Thyroxine

Q.

Axons of neurons bundle up to form the _________.

1. Glial cells

2. Nerve

3. Neon

4. Myelin sheath

Q.

The cell body of neurons gives rise to two types of processes. Name them.

Q.

Which of these is the basic unit of the nervous system?

1. Cyton

2. Erythrocyte

3. Neuron

4. Auxin

Q. ___________ are known as the powerhouse of the cell.

1. Vacuoles
2. Mitochondria
3. Lysosomes
4. Centrioles

Q.

The ___ forms an insulating layer, surrounding the axon.

Q.

What is a nerve? What is the function it performs?

Q. Identify the missing parts in the following diagram.
A) a - Dendrites, b - Nucleus, c - Axon, d - Cell body
B) a - Axon, b - Dendrites, c - Cell body, d - Nucleus
C) a - Dendrites, b - Cell body, c - Axon, d - Nucleus
D) a - Axon, b - Cell body, c - Dendrites, d - Nucleus

Q. Match the gland to the hormone secreted by them.

1. Adrenaline
2. 
3. Testosterone
4. Insulin
5. 
6. Thyroxine
7. 
8.