Samacheer Kalvi solutions for Science [English] Class 10 SSLC TN Board chapter 15 - Nervous System [Latest edition]

Bipolar neurons are found in ______

Site for processing of vision, hearing, memory, speech, intelligence, and thought is ______

In reflex action, the reflex arc is formed by ______

Dendrites transmit impulse ______ cell body and axon transmit impulse ______ cell body.

The outermost of the three cranial meninges are ______

There are ______ pairs of cranial nerves and ______ pairs of spinal nerves.

The neurons which carry impulse from the central nervous system to the muscle fibre.

Which nervous band connects the two cerebral hemispheres of the brain?

The node of Ranvier is found in ______

Vomiting centre is located in ______

Nerve cells do not possess ______

A person who met with an accident lost control of body temperature, water balance, and hunger. Which of the following part of the brain is supposed to be damaged?

______ is the longest cell in our body.

Impulses travels rapidly in ______ neurons.

A change in the environment that causes an animal to react is called ______.

______ carries the impulse towards the cell body.

The two antagonistic components of the autonomic nervous system are ______ and ______.

A neuron contains all cell organelles except ______.

______ maintains the constant pressure inside the cranium.

______ and ______ increases the surface area of cerebrum.

The part of the human brain which acts as a relay center is ______.

Dendrons are the longest fibres that conduct impulses away from the cell body.

The sympathetic nervous system is a part of the central nervous system.

Hypothalamus is the thermoregulatory centre of the human body.

The cerebrum controls the voluntary actions of our body.

In the central nervous system, myelinated fibres form the white matter.

All the nerves in the body are covered and protected by meninges.

Cerebrospinal fluid provides nutrition to the brain.

Reflex arc allows the rapid response of the body to a stimulus.

Pons helps in regulating respiration.

Match the following

Understand the assertion statement. Justify the reason given and choose the correct choice.

• Assertion: Cerebrospinal fluid is present throughout the central nervous system.
• Reason: Cerebrospinal fluid has no such functions.

Understand the assertion statement. Justify the reason given and choose the correct choice.

• Assertion: Corpus callosum is present in space between the duramater and piamater.
• Reason: It serves to maintain the constant intracranial pressure.

Define stimulus.

Name the parts of the hindbrain.

What are the structures involved in the protection of the brain?

Give an example for conditioned reflexes.

Which acts as a link between the nervous system and endocrine system?

Define the following: 

Reflex arc  

Differentiate between Voluntary and involuntary actions.

Differentiate between Medullated and non-medullated nerve fibre.

With the help of a suitable diagram describe the structure of a neuron. 

Illustrate the structure and functions of the brain.

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

Describe the structure of the spinal cord.

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

Classify neurons based on their structure.

‘A’ is a cylindrical structure that begins from the lower end of the medulla and extends downwards. It is enclosed in bony cage ‘B’ and covered by membranes ‘C’. As many as ‘D’ pairs of nerves arise from the structure ‘A’.

(i) What is A?

(ii) Name (a) bony cage ‘B’ and (b) membranes ‘C’

(iii) How much is D?

Our body contains a large number of cells ‘L’ which are the longest cells in the body. L has long and short branches called ‘M’ and ‘N’ respectively. There is a gap ‘O’ between two ‘L’ cells, through which nerve impulse transfer by the release of chemical substance ‘P’.

(i) Name the cells L?

(ii) What are M and N?

(iii) What is the gap O?

(iv) Name the chemical substance P?