Spinal Nerves

Q.

Which of the following is not controlled by the medulla oblongata.

1. Heartbeat

2. Breathing

3. Body temperature

4. Sneezing

Q.

Differentiate between myelinated and non-myelinated fibres.

Q. Where is cerebrospinal fluid present? Please explain.

Q.

What is peripheral nervous system?

Q. What are the two types of nerve processes?

Q.

What is optic chiasm?

Q.

Motor nerves carry messages from brain to muscles.

1. True
2. False

Q.

Conduction of impulses via saltatory mode in myelinated neurons is ___ than unmyelinated neurons.

Q.

Name the fluid that protects the brain from shocks.

Q.

What hormone does the heart produce?

Q.

Name the cells that carry messages throughout the nervous system.

Q.

Constrictions at intervals in a nerve fibre are known as

1. Nodes of Ranvier

2. Nodes of schwann

3. Dorsal fissure

4. Ventral fissure

Q.

What is the function of cerebrospinal fluid in the brain and spinal cord?

Q. Optic lobes are a part of _________ region of the brain.

1. pons varolii
2. midbrain
3. hindbrain
4. forebrain

Q.

Spinal nerve is a type of _________ .

1. mixed neuron

2. motor neuron

3. sensory neuron

4. associated neuron

Q.

How are nerve, nervous and neuron different?

Q.

Choose the correct answer from the four options given below.

The ventral root ganglion of the spinal cord contains cell bodies of the

1. Motor neuron

2. Sensory neuron

3. Intermediate neuron

4. Association neuron

Q.

What would happen if the spinal cord is damaged?

Q. What are the scientific names for the following receptors in animals?
(d) receptors for smell

Q.

Choose the correct answer from each of the four options given below:

The dorsal root ganglion of the spinal cord contains cell bodies of the

1. Motor neuron

2. Sensory neuron

3. Intermediate neuron

4. Association neuron

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

[Review question: Pg. No: 226]

1. association neuron
2. afferent neurons
3. efferent neuron
4. unipolar neuron

Q.

(a) State two functions of myelin sheath.

Q.

Match the spinal nerves mentioned in column I with the number listed in column II and select the right answer containing the correct matching of the alphabets of the two columns

$\begin{array}{cccc}& \text{Column I-}& & \text{Column -II}\\ & \text{Spinal nerves}& & \text{Number}\\ A& \text{Lumber nerves}& e& \text{1 pair}\\ B& \text{Cervical nerves}& f& \text{12 pairs}\\ C& \text{Thoracic nerves}& g& \text{8 pairs}\\ & & h& \text{5 pairs}\end{array}$

1. A=f, B=e, C=g

2. A=g, B=h, C=e

3. A=h, B=g, C=f

4. A=e, B=f, C=g

Q.

A three-dimensional image of an object is formed in the:

1. Brain

2. Retina

3. Fovea

4. Optic chiasma

Q. Which of the following statements is true?

1. Saltatory conduction is seen in non - myelinated nerve fibres
2. Nissl's granules are found in muscles fibres
3. Non - myelinated nerve fibres do not possess nodes of Ranvier.
4. Non - myelinated nerve fibres are completely enclosed by myelin sheath.

Q. How many types of nerves are present?

Q. How many pairs of cranial nerves are present in a human body?

1. 12
2. 15
3. 11
4. 14

Q.

A person suffers from paralytic stroke and is unable to express his feelings of happiness, pain, anger and other emotions through his face. The possible reason could be __________________.

1. Cerebellum function is hampered

2. Right cerebral hemisphere coordination with the left is lost

3. Damage in gray matter of cerebrum

4. Nerves arising from pons varoli are damaged

Q.

What is the spinal cord involved in?

Q. Fore brain comprises of how many parts? Which are they?