A neuron is a microscopic structure and basic structural and functional unit of the nervous system. It is also known as a neurone nerve cell. It carries electrical impulses which transform the information from body to brain and brain to body. The three major parts of a neurone are cell body dendrites and Axon. The cell body contains cytoplasm with certain granular bodies called Nissl's granules and typical cell organelles. Let's take this quiz and check your knowledge, how much you know about the neuron as and functional unit of neural system?
1. Which of the following is not a part of a neuron?
A. Dendrites
B. Cell body
C. Node of Ranvier
D. Corpus callosum
2. Which one contains chemicals neurotransmitter?
A. Synaptic vesicles
B. Arachnoid
C. Corpora
D. Pons
3. How many types of neurons, based on the number of axons and dendrites?
A. Five
B. Three
C. seven
D. One
4. Multipolar neuron means_____.
A. Cell body with one axon only
B. Cell body with one axon and one dendrite
C. Cell body with one axon and two or more dendrites
D. None of these
5. Bipolar neurone found in_____
A. Retina of eye
B. Embryonic stage
C. Cerebral cortex
D. All of these
6. The gaps between two adjacent myelin sheaths are called_____
A. Nissl's granules
B. Schwan cell
C. Nopde of Ranvier
D. Axon terminal
7. Which nerve fibres are found in spinal and cranial nerves?
A. Afferent fibres
B. Efferent fibres
C. Myelinated nerve fibres
D. Natural fibres
8. Unmyelinated fibres are found in______&________.
A. Autonomous and the somatic neural system
B. Spinal and cranial nerves
C. Both of these
D. None of these
9. Where is unipolar neurons usually found?
A. In the cerebral cortex
B. In the retina of eye
C. In the embryonic stage
D. All of these
10. Neurons are excitable cells because their membrane is in a______.
A. Static state
B. Polarised state
C. Unpolarised state
D. None of these
11. When, the axonal membrane is comparatively more permeable to potassium ions and nearly impermeable to sodium ions?
A. When neurone is conducting any pulse
B. When neuron is polarised
C. When neurone is not conducting any impulse
D. All of these
12. A nerve impulse is transmitted from one neuron to another neuron through a Junction called______.
A. Synapse
B. Action potential
C. Resting potential
D. Synaptic knob
13. Which of the following are the types of synapses?
A. Electrical synapses
B. Chemical synapses
C. Electrical and chemical synapses
D. None of these
14. In which of the following impulse transmission is faster?
A. Chemical synapse
B. Electrical synapse
C. Both of them
D. None of them
15. At a chemical synapse, the membranes of the pre and postsynaptic neurons are separated by a fluid-filled space called_____.
A. Synaptic knob
B. Axon terminal
C. Node of Ranvier
D. Synaptic cleft
16. Which synapses are rare in the human nervous system?
A. Electrical synapses
B. Chemical synapses
C. Both of these
D. None of these
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