Spinal Nerves

Q. How many pairs of spinal nerves are there in humans?

1. 31
2. 26
3. 33
4. 28

Q. Factor(s) affecting speed of conduction of nerve impulse across myelinated axon include(s)

1. amount of myelination
2. axon diameter
3. temperature
4. All of the above

Q. Which of the following animal is not a vertebrate?

1. Lamprey
2. Amphioxus
3. Rabbit
4. Sparrow

Q.

Distinguish between:

(a) afferent neurons and efferent neurons

(b) impulse conduction in a myelinated nerve fibre and unmyelinated nerve fibre

(c) aqueous humor and vitreous humor

(d) blind spot and yellow spot

(f) cranial nerves and spinal nerves.

Q.

Differentiate between choroid and sclerotic layer.

Q. There are pairs of spinal nerves and pairs of cranial nerves in human body.

1. 21
2. 13
3. 31
4. 12

Q. Match the following columns.
$\begin{array}{cc}ColumnI& ColumnII\\ A.Sacralnerves& 1.1pair\\ B.Thoracicnerves& 2.8pairs\\ C.Coccygealnerves& 3.7pairs\\ D.Cervicalnerves& 4.12pairs\\ & 5.5pairs\end{array}$

1. A - 4 B - 1 C - 3 D - 2
2. A - 5 B - 3 C - 1 D - 2
3. A - 3 B - 4 C - 2 D - 1
4. A - 2 B - 5 C - 3 D - 1
5. A - 5 B - 4 C - 1 D - 2

Q.

The anterior (ventral) root of a spinal nerve is composed of

1. Somatic motor and visceral motor fibres

2. Somatic sensory and visceral sensory fibres

3. Somatic sensory and visceral motor fibres

4. Somatic motor and visceral sensory fibres

Q.

Differentiate between:

(a) Myelinated and non-myelinated axons

(b) Dendrites and axons

(c) Rods and cones

(d) Thalamus and Hypothalamus

(e) Cerebrum and Cerebellum

Q. How medullary rays are formed?

Q. There are pairs of spinal nerves and pairs of cranial nerves in human body.

1. 21
2. 13
3. 31
4. 12

Q. There are pairs of spinal nerves and pairs of cranial nerves in human body.

1. 21
2. 13
3. 31
4. 12

Q. Match the following columns.
$\begin{array}{cc}ColumnI& ColumnII\\ A.Sacralnerves& 1.1pair\\ B.Thoracicnerves& 2.8pairs\\ C.Coccygealnerves& 3.7pairs\\ D.Cervicalnerves& 4.12pairs\\ & 5.5pairs\end{array}$

1. A - 5 B - 3 C - 1 D - 2
2. A - 3 B - 4 C - 2 D - 1
3. A - 4 B - 1 C - 3 D - 2
4. A - 2 B - 5 C - 3 D - 1
5. A - 5 B - 4 C - 1 D - 2

Q.

What is the number of spinal nerves in humans?

Q. Which one of the following characters is not typical of the class Mammalia?

1. Thecodont dentition
2. Alveolar lungs
3. Ten pairs of cranial nerves
4. Seven cervical vertebrae

Q. The number of pairs of spinal nerves present in human spinal cord are:

1. 32
2. 31
3. 30
4. 34

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 alphabets of the two columns.
$\begin{array}{cccc}& ColumnI& & ColumnII\\ & Spinalnerves& & Number\\ A& Lumbernerves& e& 1pair\\ B& Cervicalnerves& f& 12pairs\\ C& Thoracicnerves& g& 8pairs\\ & & h& 5pairs\end{array}$

1. A=g, B=h, C=e
2. A=f, B=e, C=g
3. A=e, B=f, C=f
4. A=h, B=g, C=f

Q. State whether the following statement is true or false.

1. True
2. False

Q. The portion of electrocardiogram related to the propagation of the cardiac impulse between the SA node and the AV node is the ......... interval

1. ST
2. PR
3. QT
4. RR

Q. Preganglionic sympathetic fibres are

1. Andrenergic
2. Cholinergic
3. Hypergonic
4. Synergic

Q. Draw a labelled diagram of T.S. of spinal cord.

Q. All nerve fibres arising from the spinal cord are mixed nerve fibres.

1. True
2. False

Q. Dorsal root of spinal nerve contains

1. Sensory neurons only
2. Relay and sensory neurons
3. Sensory and motor neurons
4. Motor and relay neurons

Q. A cylindrical structure P in our body begins in continuation with medulla and extends downwards. It is enclosed in a bony cage Q and surrounded by membranes R. As many as x pairs of nerves arise from the structure P. The structure P is involved in the reflex actions of our body and conduction of nerve impulses to and from another organ S of our body with which it forms CNS.
(a) Name the structure P.

Q. Name the parasympathetic nerves that innervate the eye. Mention the function of each and specify the neurotransmitter liberated by these nerves at the synapse.

Q. Structure connected with vision is Rabbit is

1. Corpus callosum
2. Corpora quadrigemina
3. Corpus albicans
4. Hippocampus

Q. Assertion :Thalamus is a white mater act as relay centre Reason: It coodinate sensory and motor signelling

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

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=e, B=f, C=g

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

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

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

Q. State where in human body central canal is located and also state its main function.

Q. Which of these is a somatic motor nerve controlling eye ball?

1. Optic
2. Trigeminal
3. Trochlear
4. Spinal accessory