Download App

Science [1 Mark Questions]

Nervous System · Tamil Nadu Board STD 10 (Tamil - English Medium). 25 questions.

Questions

[1 Mark Questions]

🎯

Test yourself on this topic

25 questions · timed · auto-graded

Question 11 Mark
Explain the Peripheral Nervous System.
Answer
Peripheral Nervous System is formed, by the nerves arising from the brain and the spinal cord. The nerves arising from the brain are called cranial nerves. In man, there are 12 pairs of cranial nerves. Some of the cranial nerves are sensory.
Nerves arising from the spinal cord are called spinal nerves. In man, there are 31 pairs of spinal nerves. Each spinal nerve has a dorsal sensory root and the ventral motor root.
View full question & answer→
Question 21 Mark
What is cerebrospinal fluid? What is its functions?
Answer
The brain is suspended in a special fluid environment called cerebrospinal fluid (CSF).
Functions:
  • It acts as a shock-absorbing fluid and protects the brain from damage when it is subjected to a sudden jerk.
  • It supplies nutrients to the brain.
  • It collects and removes wastes from the brain.
  • It is responsible for maintaining a constant pressure inside the cranium.
View full question & answer→
Question 31 Mark
How are neurons categorized on the basis of functions?
Answer
On the basis of functions the neurons are categorised as:
  • Sensory or afferent neurons, which carry impulses from the sense organ to the central nervous system.
  • Motor or efferent neurons, which carry impulses from the central nervous system to effector organs such as the muscle fibre and the gland.
  • Association neurons, which conduct impulses between sensory and motor neurons.
View full question & answer→
Question 41 Mark
What are the cerebral lobes?
Answer
Each cerebral hemisphere is divisible into a frontal lobe, a parietal lobe, a temporal lobe and an occipital lobe. These lobes are called cerebral lobes.
View full question & answer→
Question 51 Mark
Why is the Autonomic Nervous System called Visceral nervous system?
Answer
The Autonomic Nervous System is also called Visceral Nervous System because it regulates the function of internal visceral organs of our body.
View full question & answer→
Question 61 Mark
What are the types of nerve fibres?
Answer
The two types of nerve fibres, based on the presence or absence of myelin sheath are

  • Myelinated nerve fibre: The axon is covered with a myelin sheath.
  • Non-myelinated nerve fibre: The axon is not covered by a myelin sheath.

Myelinated and non-myelinated nerve fibres from the white matter and grey matter of the brain.

View full question & answer→
Question 71 Mark
Name the three connective tissue membrane of Meninges.
Answer
  1. Duramater : Outermost thick fibrous membrane.
  2. Arachnoid membrane : Middle thin vascular membrane provide web like cushion.
  3. Piamater : Innermost thin oblicate membrane richly supplied with blood.
View full question & answer→
Question 81 Mark
What are Neurotransmitters? Give an example.
Answer
Neurotransmitters are chemicals, which allow the transmission of a nerve impulse from the axon terminal of one neuron to the dendron of another neuron or to an effector organ. Acetylcholine is the neurotransmitter released by neurons.
View full question & answer→
Question 91 Mark
What is homeostasis?
Answer
The coordination between the various cells and organs is essential for their diverse activities to maintain physiological balance called Homeostasis.
View full question & answer→
Question 101 Mark
What is the synaptic transmission?
Answer
The flow of nerve impulses from the axonal end of one neuron to the dendrite of another neuron through a synapse is called synaptic transmission.
View full question & answer→
Question 111 Mark
Name the tapered spinal cord into a thin thread-like structure present in the posterior-most region.
Answer
Filum terminate.
View full question & answer→
Question 171 Mark
Write a function of glial cells.
Answer
Glial cells or Neuroglia are non-exciting, supporting cells of nervous system.
View full question & answer→
Question 181 Mark
What is the function of Meningeai membranes in the brain?
Answer
Meningeal membranes protect the brain from mechanical injury.
View full question & answer→
Question 191 Mark
Name the two enlargement found in spinal cord.
Answer
The spinal cord has two enlargements.
Cervical plexus – found in neck region
Lumbar plexus – in Lumbar region.
View full question & answer→
Question 201 Mark
What are Spinal Reflexes?
Answer
Most of the reflex actions are monitored and controlled by the spinal cord. So it is called Spinal Reflexes.
View full question & answer→
Question 211 Mark
Choose the incorrect statement and Write it as a correct statement.
A receptor is a cell or group of cells that receive the stimuli.
Answer
Correct Statement
View full question & answer→
Question 221 Mark
Choose the incorrect statement and Write it as a correct statement.
CNS consists of all nerves, which connect the brain and spinal cord to all parts of the body.
Answer
Incorrect Statement
Correct Statement: CNS consists of all nerves, which connect the brain and spinal cord to all parts of the body.
View full question & answer→
Question 231 Mark
Choose the incorrect statement and Write it as a correct statement.
Axon carries impulses towards the cyton.
Answer
Incorrect Statement
Correct Statement: Axon carries impulses away from the cyton.
View full question & answer→
Question 241 Mark
Choose the incorrect statement and Write it as a correct statement.
The brain is the controlling centre of all the body activities.
Answer
Correct Statement
View full question & answer→
Question 251 Mark
Choose the incorrect statement and Write it as a correct statement.
Responses refer to the changes in the environmental conditions, which are detected by receptors.
Answer
Incorrect Statement
Correct Statement: Stimulus refer to the changes in the environmental conditions, which are detected by receptors.
View full question & answer→
Generate Paper FreeAll Nervous System topics
[1 Mark Questions] - Science STD 10 Questions - Vidyadip