NEET PG DENTAL EXAM

EMBRYOLOGY

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many neurones are in your brain?
A
1 thousand
B
1000 billion
C
1 hundred
D
100 billion
Explanation: 

Detailed explanation-1: -Remarkably, at an average of 86 billion neurons and 85 billion nonneuronal cells (25), the human brain has just as many neurons as would be expected of a generic primate brain of its size and the same overall 1:1 nonneuronal/neuronal ratio as other primates (26).

Detailed explanation-2: -The human brain has often been viewed as outstanding among mammalian brains: the most cognitively able, the largest-than-expected from body size, endowed with an overdeveloped cerebral cortex that represents over 80% of brain mass, and purportedly containing 100 billion neurons and 10× more glial cells.

Detailed explanation-3: -The human brain is composed of 80 billion neurons. These nerve cells differ in their form, function, and connectivity with other neurons to form neural networks. This complexity allows the brain to perform its many functions, from controlling speech and vision to storing memories and generating emotions.

Detailed explanation-4: -A typical healthy human brain contains about 200 billion nerve cells, or neurons, linked to one another via hundreds of trillions of tiny contacts called synapses.

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