Neuron structure and nerve fibre types — practice questions

Question 1 · difficulty L1 · recall

The long process usually carrying impulses away from the cell body:

• A. dendrite
• B. nissl body
• C. soma only
• D. axon

Question 2 · difficulty L1 · recall

The part of a neuron that usually receives signals toward the cell body:

• A. axon terminal
• B. node of Ranvier
• C. dendrite
• D. myelin sheath

Question 3 · difficulty L1 · recall

Which neuronal processes usually receive signals from other cells?

• A. Myelin sheaths
• B. Axon terminals
• C. Dendrites
• D. Nodes of Ranvier

Question 4 · difficulty L1 · recall

Which part of a neuron contains the nucleus?

• A. Myelin sheath
• B. Node of Ranvier
• C. Axon terminal
• D. Cell body

Question 5 · difficulty L2 · understanding

What is the main effect of myelin around an axon?

• A. It insulates the axon and increases conduction speed
• B. It produces every neurotransmitter
• C. It acts as the neuron's nucleus
• D. It prevents all ion movement at nodes

Question 6 · difficulty L2 · understanding

What are nodes of Ranvier?

• A. Gaps between two neurons
• B. Gaps between adjacent myelin segments
• C. Branches of dendrites
• D. Vesicles in an axon terminal

Question 7 · difficulty L3 · application

A long neuronal process carries impulses away from the cell body toward distant targets. What is it?

• A. Nissl body
• B. Dendrite
• C. Axon
• D. Cell body

Question 8 · difficulty L3 · application

An axon loses its myelin sheath but remains structurally intact. Which change is most likely?

• A. The synaptic cleft closes
• B. Conduction becomes faster
• C. The nucleus disappears
• D. Impulse conduction becomes slower

Question 9 · difficulty L3 · understanding

The specific receptors for neurotransmitters in a synapse are present on $\_\_\_\_$ .

• A. Schwann cell
• B. Pre-synaptic membrane
• C. Myelin sheath
• D. Post-synaptic membrane

Question 10 · difficulty L3 · understanding

Match List-I with List -II List - I List - II (A) Schwann cells (I) Neurotransmitter (B) Synaptic knob (II) Cerebral cortex (C) Bipolar neurons (III) Myelin sheath (D) Multipolar neurons (IV) Retina Choose the correct answer from the options given below:

• A. A-III, B-I, C-IV, D-II
• B. A-I, B-IV, C-II, D-III
• C. A-IV, B-III, C-II, D-I
• D. A-II, B-III, C-I, D-IV