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Neural Control and Coordination - I (Class XI)

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Which of the following is the inability to read, write and spell words despite the ability to recognise letters?

  1. Aphasia

  2. Agnosia

  3. Dyslexia

  4. Alexia

  5. Amnesia


Correct Option: C
Explanation:

Dyslexia is the inability to read, write and spell words despite the ability to recognise letters.

Which of the following do not have a nerve cell?

  1. Porifers

  2. Hydrae

  3. Planarias

  4. Earthworms

  5. Cockroaches


Correct Option: A
Explanation:

Porifers have no neurons or nerve cells in their body.

Third ventricle is present in which of the following?

  1. Corpora quadrigemina

  2. Rhinencephalon

  3. Diencephalon

  4. Metencephalon

  5. Crura cerebri


Correct Option: C
Explanation:

Cavity of diencephalon is narrow and lined by ependyma and is called third ventricle.

Which of the following is the involuntary part of the peripheral nervous system?

  1. Brain

  2. Spinal cord

  3. Somatic nervous system

  4. Visceral nervous system

  5. Neuroendocrine system


Correct Option: D
Explanation:

It is the involuntary part of the peripheral nervous system.

Which is the following is/are the structural and functional unit of nervous system?

  1. Ganglia

  2. Dendrites

  3. Axon

  4. Cyton

  5. Neuron


Correct Option: E
Explanation:

Neurons are the structural and functional unit of human nervous system.

Which of the following nerves rises from the supra-oesophageal ganglion in the nervous system of insects?

  1. Cervical

  2. Antennary

  3. Maxillary

  4. Labial

  5. Mandibular


Correct Option: B
Explanation:

Antennary nerve rises from the supra-oesophageal ganglion in the nervous system of insects.

Which of the following is a common type of neuron present in the grey matter of central nervous system?

  1. Unipolar

  2. Bipolar

  3. Pseudounipolar

  4. Multipolar

  5. Apolar


Correct Option: D
Explanation:

It is present in the grey matter of central nervous system.

In which of the following types of neurons does cyton bear a single process which bifurcates to form an axon and a dendron?

  1. Apolar

  2. Bipolar

  3. Unipolar

  4. Pseudounipolar

  5. Multipolar


Correct Option: D
Explanation:

In pseudounipolar neurons, cyton bears a single process which bifurcates to form an axon and a dendron.

Bipolar neurons occur in

  1. neuroblasts

  2. retina

  3. cerebral cortex

  4. invertebrates

  5. ganglia of ANS


Correct Option: B
Explanation:

In retina, bipolar neurons are present.

Which of the following gives rise to pons and cerebellum?

  1. Mesencephalon

  2. Rhinencephalon

  3. Metencephalon

  4. Myelencephalon

  5. Prosencephalon


Correct Option: C
Explanation:

It gives rise to pons and cerebellum.

A wave of electrochemical disturbance that passes along the elements of nervous system during the conduction of an excitation is called as

  1. nerve impulse

  2. synaptic delay

  3. subliminal stimulus

  4. saltatory transmission

  5. supraliminal stimulus


Correct Option: A
Explanation:

A wave of electrochemical disturbance that passes along the elements of nervous system during the conduction of an excitation is called nerve impulse.

A narrow intercellular space present between two neurons in the region of synapse is known as

  1. post synaptic membrane

  2. gap junction

  3. synaptic knob

  4. synaptic cleft

  5. synapse


Correct Option: D
Explanation:

A narrow intercellular space present between two neurons in the region of synapse is known as synaptic cleft.

Axons of neurons covered by non-nervous cells are called

  1. nerves

  2. glia

  3. schwann cells

  4. nodes of Ranvier

  5. neurilemma


Correct Option: B
Explanation:

Axons of neurons covered by non-nervous cells are called glia.

Which of the following is the moderately tough inner meninx of the brain and is highly vascularised and pigmented?

  1. Grey matter

  2. Dura mater

  3. Pia mater

  4. White matter

  5. Arachnoid


Correct Option: C
Explanation:

It is the moderately tough inner meninx, which is highly vascularised and pigmented covering of brain.

Which of the following gives rise to telencephalon?

  1. Prosencephalon

  2. Myelencephalon

  3. Diencephalon

  4. Rhombencephalon

  5. Rhinencephalon


Correct Option: A
Explanation:

It differentiates into three parts: rhinencephalon, telencephalon and diencephalon.

Which of the following is the largest part of brain constituting nearly 80% of the brain?

  1. Olfactory lobe

  2. Cerebral aqueduct

  3. Cerebellum

  4. Cerebrum

  5. Medulla


Correct Option: D
Explanation:

It is the largest part of brain constituting nearly 80% of the brain.

Which of the following resists the movement of brain inside the cranium to prevent stretching and breaking of blood vessels?

  1. White matter

  2. Dura mater

  3. Archanoid

  4. Grey matter

  5. Pia mater


Correct Option: B
Explanation:

It resists the movement of brain inside the cranium to prevent stretching and breaking of blood vessels.

Knob-like posterior part of corpus callosum is called

  1. cerebral cortex

  2. fourth ventricle

  3. genu

  4. splenium

  5. olfactory ventricle


Correct Option: D
Explanation:

It is the knob-like posterior part of the corpus callosum.

Corpora quadrigemina is the sub-part of which of the following?

  1. Mesencephalon

  2. Metencephalon

  3. Epencephalon

  4. Rhombencephalon

  5. Myelencephalon


Correct Option: A
Explanation:

Corpora quadrigemina is a sub-part of mesencephalon.

Which of the following is the anterior large part of central nervous system which functions as the central information processing organ?

  1. Epencephalon

  2. Corpora quadrigemina

  3. Cerebrum

  4. Medulla

  5. Pons


Correct Option: C
Explanation:

It is the largest part of brain. It constitutes nearly 80% of the brain and functions as the central processing unit.

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