Frank solutions for Biology [English] Class 10 ICSE chapter 9 - Nervous System [Latest edition]

Name the following:
Nervous system including brain and spinal cord.

Name the following:
Sympathetic and parasympathetic jointly forms.

Name the following:
Terminal end of spinal cord.

Name the following:
The third neuron that is involved in reflexes, other than simple reflex.

Name the following:
Study of structure and functions of nervous system.

Name the following:
Nerve which carry impulse from sensory receptor to CNS.

Name the following:
The nerve which carry impulse from CNS to muscles.

Name the following:
The peripheral matter of spinal nerve.

Name the following:
The peripheral matter of the brain.

Name the following:
Outermost meningial membrane of spinal cord.

Name the following:
Structural and metabolic unit of nervous tissue.

Name the following:
The biological term given to the protective membranes of the brain.

Name the following:
Cavity in which brain is situated.

Name the following:
The neobrain.

Name the following:
The important centre of emotion.

Name the following:
Paired lobes of midbrain related to the vision.

Name the following:
Paired lobes of the brain related to the sense of smell.

Name the following:
Fissure between the cerebral hemispheres.

Name the following:
Inability to write.

Name the following:
The busiest organ of the body.

Name the following:
Inability to speak.

Name the following:
The longest cranial nerve.

Name the following:
Thoracolumber region of spinal cord form.

Name the following:
Highly branched axon's end.

Name the following:
Neuron only with axon.

Name the following:
White part of the eye.

Name the following:
Short sightedness.

Name the following:
Part of internal ear related to balance.

Name the following:
The photosensitive pigment present in the rod cells of the retina.

Select the odd one in the following series:
Retina, Sclera, Ciliary body, Nephron.

Select the odd one in the following series:
Endolymph, Tympanic membrane, Semi-circular canal, Blind spot.

Select the odd one in the following series:
Prosencephalon, Mesencephalon, Rhombencephalon, Myelin.

Select the odd one in the following series:
Cerebellum, Medulla oblongata, Olfactory lobe.

Select the odd one in the following series:
Parasympathetic, Sympathetic, Cranial nerve.

Match the terms of column I with those of column ll

Define the following:
Nerve impulse

Define the following:
Axon

Define the following:
Cyton

Define the following:
Action potential

Define the following:

Reflex action

Define the following:
Yellow spot

Define the following:
Blind spot

Define the following:
Power of accommodation

Distinguish between the following pair of words:
Nerve cell and neuroglia cell

Distinguish between the following pair of words:
Nervous system and hormonal system

Distinguish between the following pair of words:
Cranial nerve and spinal nerve

Distinguish between the following pair of words:
 Cerebrum and cerebellum

Distinguish between the following pair of words:
Adrenalin and acetylcholine

Distinguish between the following pair of words:
Motor and sensory nerve

Distinguish between the following pair of words:
Grey matter and white matter

Distinguish between the following pair of words:
Myopia and hypermetropia

Label the following diagram :

Label the following diagram :

Draw a well-labelled diagram of the vertical section of mammalian brain.

Which part of the brain is the seat of body temperature regulation?

Name the part of the brain responsible for sense of smell and mental function of intelligence and memory .

Draw a diagram of the side view of human brain and label the part which suits the following functions/ descriptions:
(i) It lies below and behind the cerebrum. It consists of three parts.
(ii) It is a cross-wise broad band of fibres which comments medulla oblongata, cerebellum and cerebrum.
(iii) It is the lower most and hinder part of the brain which continues below into spinal cord
(iv) It is a small thick-walled area which lies hidden below the cerebrum.
(v) It is the largest part of the brain which constitutes more than 80% and possesses 6-7 billion neurons.
(vi) It takes part in relaying sensory impulses and regulation of smooth muscle activity?

Where is this located?
Meninges

Where is this located?
Ganglia

Where is this located?
Cerebellum

Where is this located?
Nodes of Ranvier

Where is this located?
Effector organs

Name the respective organs in which the following are located and mention the main function of each:
(i) Iris
(ii) Semicircular canals

What is a reflex action?

Give one example of a conditioned reflex in your own life.

The diagram alongside represents the structure of the human ear.
(i) Write the names of the parts labelled a to g.
(ii) State briefly the functions of the parts b, d, and g.
(iii) Name the main division of the ear.
(iv) Which is the smallest bone in the human body?
(v) What is labyrinth?

The diagram alongside represents the structure found in the inner ear. Study the same and then answer the questions that follow:
(i) Name the parts labelled A, B, C and D.
(ii) Name the parts of the ear responsible for transmitting impulses to the brain.
(iii) Name the part labelled above which is responsible for:
1. Static equilibrium. 2. Dynamic equilibrium. 3. Hearing
(iv) Name the audio receptor cells which pick up vibrations.
(v) Name the fluid present in the inner ear.

Give the main function of the following:
Cochlea

Give the main function of the following:
Fovea centralis    

Give the main function of the following:
Three semicircular canals

Give the main function of the following:
Retina

Give the main function of the following:
Lachrymal glands

Give one point of difference between the following on the basis of what is indicated:
Cerebrum and spinal cord. (Arrangement of neurons)

The diagram alongside represents a certain defect of vision of the human eye.
(i) Name the defect.
(ii) Describe briefly the condition in the eye responsible for the defect.
(iii) Redraw the figure by adding a suitable lens correcting the defect. Label the parts through which light-rays pass.
(iv) What special advantage do human beings derive in having both eyes facing forward?

The diagram alongside represents a section of a mammalian eye.
(i) Label the parts 1 to 5 of the diagram.
(ii) State the function of the parts labelled 4 and 5.
(iii) With the help of a diagram show the short sightedness.

Given alongside is a diagram depicting a defect of the human eye. Study the same and then answer the questions that follow: 
(i) Identify the defect. 
(ii) Name the parts labelled 1, 2 and 3. 
(iii) Give labelled two possible reasons for this eye defect. 
(iv) Draw a labelled diagram to show how the above mentioned defect is rectified. 

Fill in the blank with the function in the following:
Cochlea : ________

Fill in the blank with the function in the following:
Meninges: ______

Name the following:
The opening through which light enters the eyes.

Name the following:
The fluid that is present inside and outside the brain.

Write whether the following is true or false:
Axon of one neuron communicates with other nerve cell through synapse.

Write whether the following is true or false:
Neurotransmitters are released on activation.

Write whether the following is true or false:
Neurotransmitters are either broken down or reabsorbed after they have conducted an impulse.

Write whether the following is true or false:
All voluntary actions are controlled by the cerebellum.

Write whether the following is true or false:
A convex lens is used for correcting myopia.

Write whether the following is true or false:
Rods are the receptor cells in the retina of the eye sensitive to dimlight.

Write whether the following is true or false:
The part of the ear associated with balance is the cochlea.

Write whether the following is true or false:
Vitreous chamber is present in ear in humans.

Choose the correct answer.
More than one foot long cells of the body are __________

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The largest part of the brain ____________

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Number of spinal nerves in human beings ______________

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Number of cranial nerves _____________

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Outermost covering of the brain is ______.

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Labyrinth is a part of ____________

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In the chemistry of vision, the photosensitive substance is _________________

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Rods are receptor of ______________

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Which one is the photoreceptor _____________

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Synapse is a close proximity of _______________

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Auditory nerve is responsible for ____________

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Man has ______ pairs of spinal nerves.

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Canal joining middle ear to pharynx ___________

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Aperture controlling passage to light into the eye is ___________

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Colour is detected by ____________

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Organ of corti is found in ___________

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The cerebral hemispheres in mammals are connected by _____________

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Presbyopia is a disease of _____________

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The rods and cones of a vertebrate retina function is to _________

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In mammals the corpus callosum connects __________