Introduction to Control & Coordination

Q.

What Is The 9+2 Arrangement?

Q.

What is a reflex arc?

Q.

Why can nerve impulses travel only in one direction?

Q.

What are involuntary muscles? Provide examples

Q.

Define stimulus and response.

Q.

What is the correct direction of flow of electrical impulses?

1. 

2. 

3. 

4. 

Q.

What is the basic unit of nervous system ?

1. Meninges

2. Neuron

3. Cerebrum

4. Glial cells

Q. The nerve which transmits impulse from ear to brain is:

1. Optic nerve
2. Occipital nerve
3. Auditory nerve
4. Sciatic nerve

Q.

What are the advantages of having a nervous system?

Q.

What are the two main communication systems in an animal's body?

Q.

Name the two systems of control and coordination in higher animals.

Q. The structures involved in the protection of the brain are -

1. Meninges
2. Cranium
3. Neurons
4. Cerebrospinal fluid

Q.

What is a monosynaptic reflex?

Q.

How does a muscle cell move?

Q.

Where can visceral muscles be seen in the body?

Q.

When exactly the polarisation of neuron membrane take place?

1. Neuron is stimulated

2. ${Na}^{+}$ ions rush in

3. $K^{+}$ ions rush out

4. No impulse to transmit

Q.

What are the functions of the muscular tissue? Name any two organs that are formed from muscular tissue only?

Q.

Fear: Threat:: Anger:?

1. Compulsion

2. Panic

3. Provocation

4. Force

Q. Why is control and coordination necessary in human beings?Explain

Q.

What is enteric nervous system? (4 marks) explain?

Q.

Drinking of alcohol affects mostly

1. Cerebrum

2. Cerebellum

3. Hypothalamus

4. Diencephalon

Q.

Give scientific/biological reasons for the following statements:

A person after consuming alcohol walks clumsily.

or

An alcoholic person walks unsteadily when drunk.

Q.

Why is chemical and hormonal coordination necessary?

Q.

Paheli accidentally placed her hand over a flame and immediately pulled it back. She felt the sensation of heat and reacted due to the action of?

1. Blood cells

2. Skin surface

3. Nerve cells

4. Nucleus of cells

Q. PNS includes :

1. Ganglia
2. Spinal chord
3. Brain
4. Nerves

Q.

Does axoneme possess microtubules?

Q.

Compare the hormonal response with the nervous response with respect to their speed, transmission and the general nature of changes brought about

Q.

Draw neat diagrams of voluntary, involuntary and cardiac muscles.

Q.

Write one word for the following:

A wave of electrical disturbance sweeps over the nerve cells.

Q.

Muscle cells are branched.

1. True
2. False