Neurons

Q.

The structural and functional unit of the nervous system is___.

Q.

The longest cell in human body is ___

Q.

Collections of nerve cell bodies outside the CNS are called _____.

1. Tracts

2. Tracts or ganglia

3. Ganglia

4. Nuclei

Q.

Nerves that bring messages from the sense organs to the brain.

Q.

The message that travels along a nerve is called

1. ANS

2. CNS

3. PNS

4. All of these

Q.

Which of the following is the correct direction of flow of electrical impulses?

1. 

2. 

3. 

4. 

Q.

Identify the part of the neuron which receives electrical impulse first.

1. Axon

2. Cyton

3. Dendrites

4. Myelin sheath

Q.

What is the tiny gap between two neurons called?

Q.

What is the term used for describing the point of contact between two neurons?

1. Dendrite

2. Axon

3. Synapse

4. Grey matter

Q.

Point of communication between two neurons is known as__________.

1. synopsis

2. synapse

3. synapsis

4. syngamy

Q.

What are the different types of nerves in human body?

1. Sensory nerves

2. Involuntary nerves

3. Mixed nerves

4. None of these

Q.

The neuron which carries nerve impulse from receptors to spinal cord is called afferent neuron.

1. efferent neuron

2. afferent neuron

Q.

______ send signals away from neurons whereas ______ receive signals from other neurons.

1. Synapses; Dendrites

2. Dendrites; Axons

3. Axons; Synapses

4. Axons; Dendrites

Q.

Which of these is not a part of a neuron?

1. Dendrite

2. Axon

3. Myelin sheath

4. Meninges

Q.

A single long fibre called _________ extend from the cell body.

Q.

Synapse is the point of contact between the terminal branches of the axon and the dendrites of two different neurons.

1. True

2. False

Q.

What is a bundle of neurons or axons known as?

1. Neuron

2. Nerve

3. Axons

4. Nervous system

Q.

In a synapse, a chemical signal is transmitted from

1. Dendritic end of one neuron to axonal end of another neuron

2. Axon to the cell body of the same neuron

3. Cell body to the axonal end of the same neuron

4. Axonal end of one neuron to the dendritic end of another neuron

Q.

Question 5
Draw the structure of a neuron and explain its function.

Q. ................... is the functional and structural unit of the nervous system.

1. Neuron
2. Cerebrum
3. Cerebellum
4. Nephron

Q.

Neuron has branched process called ________ and single long process called ________.

Q.

The extension of the cyton of a neuron which carries electrical impulses forward is ___.

Q. What are the three layers of meninges of brain and spinal cord from inside to outside? [1 MARK]

Q.

In some nerve cells the axons are a metre long. Can you suggest why?

Q.

Which of the following is the basic unit of a nervous tissue?

1. Neuron

2. Nephron

3. Muscle cells

4. Blood cells

Q.

The tiny gap between two neurons is known as___ .

Q.

The H shaped area of the spinal cord is called

1. Blue matter

2. Grey matter

3. White matter

4. Black matter

Q.

Name the cell that receives and transfers messages.

1. Fat cell

2. Skin cell

3. Mycocyte

4. Nerve cell

Q.

Electrical impulses travel from cyton to___.

Q.

What do you understand by association neuron is a type of interneuron? Explain.