THE NERVOUS SYSTEM Flashcards

1
Q

what is the nervous system?

A

-Specialised network of cells in the human body/ primary internal communication system
Functions:
-To collect, process and respond to info in the environment
-To coordinate the working of different organs and cells in the body

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2
Q

What are the two subsystems involved in the nervous system

A

Central nervous system (CNS) - connects the brain and spinal cord and is the origin of all complex demands

Peripheral nervous system (PNS) - transits messages to and from the CNS via neurons.

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3
Q

What is the outer layer of the brain called?

A

-The brain outer layer is known as the cerebral cortex and is split into two hemispheres

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4
Q

What is the Peripheral Nervous System and what are the two subsystems involved?

A

-The PNS transmits messages, via millions of neurons (nerve cells) to and from the CNS
- Autonomic Nervous System (ANS) - governs vital functions in the body such as breathing, heart rate, digestion, sexual arousal and stress responses
- Somatic Nervous System (SNS) - controls muscle movement and recieves info from the sensory receptors

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5
Q

What is a gland?

A

An organ in the body that synthesizes substances such as hormones

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