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LESSON 2: BIOLOGY AND PSYCHOLOGY September 5-9, 2022.

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Added on  2022-11-17

LESSON 2: BIOLOGY AND PSYCHOLOGY September 5-9, 2022.

   Added on 2022-11-17

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LESSON 2: BIOLOGY
AND PSYCHOLOGY
September 5-9, 2022
LESSON 2: BIOLOGY AND PSYCHOLOGY September 5-9, 2022._1
The nervous system is the major
controlling, regulatory, and communicating
system in the body. It is the center of all
mental activity including thought, learning,
and memory. Together with the endocrine
system, the nervous system is responsible
for regulating and maintaining
homeostasis.
Nervous system
LESSON 2: BIOLOGY AND PSYCHOLOGY September 5-9, 2022._2
Neurons are specialized cells of the
nervous system that conduct impulses. It
receive “messages” from a number of
sources such as light, other neurons, and
pressure on the skin, and they can pass
these messages along in a complex
biological dance.
NEURONS
LESSON 2: BIOLOGY AND PSYCHOLOGY September 5-9, 2022._3
Each neuron has an axon that extends like a
trunk from the cell body. Axons are very thin,
but those that carry messages from the toes to
the spinal cord extend several feet in length—
even though they remain microscopic
The axons of many neurons are wrapped tightly
with white, fatty myelin that makes them look
like strings of sausages under the microscope.
LESSON 2: BIOLOGY AND PSYCHOLOGY September 5-9, 2022._4

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