Neuron

Q.

What is the difference between stimulus and response?

Q.

What are the two parts of neuron arising from cyton?

1. Nucleus and cell body

2. Synapse and axon

3. Axon and nerve ending

4. Axon and dendrites

Q.

What are the types of nerve fibers of PNS?

Q.

What are the structural units of nervous system called? Draw a well labelled diagram.

Q.

An aggregate of nerve cells is called ______________

Q.

Which neuron transmits the impulse from the sensory neuron to a motor neuron?

Q.

Axons of several neurons are bundled together to form

Q.

Neurons are well-protected by protein sheaths and supported functionally by widely distributed glial cells in 10:1 ratio. The supporting glial cells are classififed by their size into ___________________ & _________________.

1. Schwann Cells and Oligodendrocytes

2. Cyton & Axon

3. Macroglia & Microglia

4. Astroglia and Ependymal Cells

Q. Which neuron transmits impulses from CNS to a contracting muscle?

1. Relay neurons
2. Receptor neurons
3. Effector neurons
4. Affector neurons

Q.

The messages carried by a neuron is called:

1. Nerve code

2. Reflex arc

3. Nerve impulse

4. Brain signal

Q.

Any change in the environment that results in a change in activity of the body is known as:

1. Effector

2. Stimulus

3. Response

4. Impulse

Q.

Expalin the statement “ our hair stand on their ends during fear.”.

Q. Explain the structure and function of a neuron.

Q. Which of the following are the parts of a neuron?

1. Collagen fibre
2. Cell body
3. Dendrites
4. Axon

Q. Question 2
What does a neuron look like?

Q. Point of communication between two neurons is a gap known as__________.

1. synapse
2. synapsis
3. syngamy
4. synopsis

Q.

What are the structural units of nervous system called? Draw a well labelled diagram.

Q. The small gap between the consecutive neurons is called

1. Synapse
2. Ridge
3. Intercaleted disc
4. None of the above

Q. A nerve impulse leaves a neuron via the

1. Dendrites
2. Cyton
3. Axon
4. Nucleus

Q.

Find out the correct statement among the following:-

1. Nerve impulses and chemicals signals both are equally effective.

2. Nerve impulses are less effective than chemical signals as they cannot reach all cells as the chemicals signals do.

3. Chemical signals are less effective than nerve impulses because they have localized effects.

4. Nerve impulses are less effective than chemical signals because of slow transmission.

Q. Which of the following sense organ senses the pain?

1. Eye
2. Nose
3. Tounge
4. Skin

Q.

I am a way of coding information, in a similar way to FM radio, allowing information to be transmitted both quickly and accurately by electrical means. Who am I ?

1. Reflex arc

2. Nerve impulse

3. Brain signal

4. Nerve code

Q.

What is the speed of message from human body part to brain?

and what is the speed of reply from brain to that part of body?

Q. The gap in the myelin sheath on the axon of certain neurons is called:

1. Synapse
2. Axon hillock
3. Node of Ranvier
4. Dendrites

Q.

Unidirectional transmission of a nerve impulse through nerve fibre is due to the fact that:

1. Neurotransmitters are naturally attracted towards the brain.

2. Neurotransmitters are released by the axon endings and not by dendrites.

3. Neurotransmitters are released by dendrites and not by axon endings.

4. A nerve fibre is insulated by myelin sheath which ensures unidirectional flow.

Q. The part of the neuron responsible for relaying signals from the cell body to the terminals inside a single nerve cell is called ________.

Q. Pigment tissues are present in the

1. Skin
2. Liver
3. Heart
4. Ear

Q.

Which is the structural and functional unit of the nervous system?

Q. Which of these categories do spinal nerves come under?

1. Motor neurons
2. Sensory neurons
3. Interneurons
4. Mixed Nerve