NEET PG DENTAL EXAM

EMBRYOLOGY

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Multipolar has a number amount of axons ____
A
one
B
two
C
three
D
four
Explanation: 

Detailed explanation-1: -Multipolar neurons are the most common type of neuron. Each multipolar neuron contains one axon and multiple dendrites.

Detailed explanation-2: -Based on the number of axons and dendrites, the neurons are divided into three types i.e multipolar (with one axon and two or more dendrites, found in the cerevral cortex), bipolar (with one axon and one dendrite, found in the retina of eye) and uniploar (cell body with one axon: found usually in the embrynic stage).

Detailed explanation-3: -Motor neurons have the most common type of ‘body plan’ for a nerve cell-they are multipolar, each with one axon and several dendrites.

Detailed explanation-4: -Every neuron has only a single axon, a thin cylindrical process that can ramify and extend up to 1m. The axon arises from a specialized region of the soma called the axon hillock where an all or none signal (the action potential) is initiated once a critical threshold is reached. The presynaptic terminals.

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