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Peripheral Nervous System (Class XI/XII)

Description: Spinal nerves cranial nerves Neurons, Types of NervesHuman Neuron:Types,Anatomy and MechanismPeripheral Nervous SystemPeripheral Nervous System
Number of Questions: 15
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Tags: Spinal nerves cranial nerves Neurons, Types of Nerves Human Neuron:Types,Anatomy and Mechanism Peripheral Nervous System
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Which of the following nerves innervates superior oblique eye muscle?

  1. Optic nerve

  2. Oculomotor nerve

  3. Trochlear nerve

  4. Abducens nerve


Correct Option: C
Explanation:

Trochlear nerve innervates superior oblique eye muscle.

Which of the following nerves does not originate from medulla?

  1. Abducens

  2. Trigeminal

  3. Trochlear

  4. Vagus


Correct Option: C
Explanation:

Trochlear nerve originates from area between optic lobes and cerebellum.

Which of the following types of nerves are all the human spinal nerves?

  1. Afferent

  2. Efferent

  3. Mixed

  4. Association


Correct Option: C
Explanation:

All spinal nerves are mixed nerves.

What role do vagus nerve play?

  1. Saliva secretion

  2. Perform visceral reflexes

  3. Eye movement

  4. Taste


Correct Option: B
Explanation:

Vagus nerve plays role in visceral reflexes.

Which of the following is the largest cranial nerve in the human body?

  1. Abducens nerve

  2. Trigeminal nerve

  3. Hypoglossal nerve

  4. Vagus nerve


Correct Option: B
Explanation:

Trigeminal nerve is the largest nerve as it innervates all parts of the skin.

What is the total number of spinal nerves?

  1. 12 pairs

  2. 31 pairs

  3. 5 pairs

  4. 8 pairs


Correct Option: B
Explanation:

There are 31 pairs of spinal nerves.

Mark the odd pair out.

  1. Vestibular, Cochlear

  2. Palatines, Salivary

  3. Abducens, Optic

  4. Trochlear, Vagus


Correct Option: C
Explanation:

Abducens is a motor nerve whereas Optic is a sensory nerve.

From where do the 3rd and the 4th cranial nerves originate?

  1. Cerebrum

  2. Cerebellum

  3. Midbrain

  4. Medulla


Correct Option: C
Explanation:

The 3rd and the 4th cranial nerves originate from midbrain.

Which of the following pairs is incorrect?

  1. Cervical - 8

  2. Thoracic - 12

  3. Sacral - 4

  4. Lumber - 5


Correct Option: C
Explanation:

Wrong; there are 5 pairs of sacral nerves.

Which type of neurons does the dorsal root ganglion of the spinal cord contain?

  1. Motor

  2. Sensory

  3. Mixed

  4. It does not contain neurons


Correct Option: B
Explanation:

Dorsal root ganglion contains the sensory neurons.

Which of the following nerves innervates muscles of larynx?

  1. Glassopharyngeal

  2. Vestibular

  3. Spinal accessory

  4. Abducens


Correct Option: C
Explanation:

Spinal accessory nerve innervates muscles of larynx.

Which of the following branches of spinal nerves contains autonomic neurons?

  1. Dorsal ramus

  2. Ramus communicans

  3. Ventral ramus

  4. Frontal lobe


Correct Option: B
Explanation:

Ramus communicans contains autonomic neurons.

Which of the following body organs is innervated by optic, oculomotor, trochlear and abducens nerves?

  1. Ear

  2. Nose

  3. Eye

  4. Tongue


Correct Option: C
Explanation:

Optic, oculomotor, trochlear and abducens nerves innervate eye.

Which of the following nerves innervates retina?

  1. Oculomotor nerve

  2. Trochlear nerve

  3. Optic nerve

  4. Abducens nerve


Correct Option: C
Explanation:

Optic nerve innervates retina.

What type of neurons connect sensory and motor neurons to each other and with other nerve cells?

  1. Mixed neurons

  2. Association neurons

  3. Afferent nerve fibres

  4. Efferent nerve fibres


Correct Option: B
Explanation:

Association neurons connect sensory and motor neurons with each other and with other nerve cells in CNS.

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