NEET PG DENTAL EXAM

EMBRYOLOGY

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the insulating membrane that surrounds parts of the axon that helps to protect & propagate action potential?
A
Axon
B
Dendrites
C
Node of Ranvier
D
Myelin Sheath
Explanation: 

Detailed explanation-1: -The myelin sheath is a greatly extended and modified plasma membrane wrapped around the nerve axon in a spiral fashion [1]. The myelin membranes originate from and are a part of the Schwann cells in the peripheral nervous system (PNS) and the oligodendroglial cells in the central nervous system (CNS) (see Chap.

Detailed explanation-2: -Again, depending on the location within the body, these structures can be covered in sheaths of an insulating material known as myelin. Based on the presence or absence of the myelin sheath, axons are distinguishable into myelinated and non-myelinated axons.

Detailed explanation-3: -1) Sleep. Animal studies suggest that sleep increases the amount of oligodendrocyte precursor cells (OPCs) in the body, which can lead to increased myelin formation. 2) Exercise. 3) Socializing and New Experiences. 4) Learning New Complex Skills. 1) Fish/DHA (Brain) 2) Vitamin D. 3) Vitamin C. 4) Iodine. More items •15-Dec-2022

There is 1 question to complete.