Summary Nervous system and brain

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The nervous system
and the brain

, The Nervous System:
The nervous system is the body’s control and communication center.
Main functions:
send to the brain
• Sensory input Senses get
.




>
-




Detects stimuli (e.g. touch, sound, light) using sensory receptors.
Sends signals to the brain or spinal cord via sensory neurons. (receptor)
• Integration > information gets processed
- .




The brain and spinal cord (central nervous system or CNS) interpret
sensory input.
The CNS processes the information and makes decisions.
• Motor output > instructions get sent to body a response
-
=




The CNS sends instructions through motor neurons to muscles or
glands. (effector)
This causes a response, like movement or hormone release.

Flow chart of the nervous system:



Nervous system
all the nerves

· & ut side the brain

Spinal
- cord .




Central Nervous Peripheral nervous
Systems (brain and system
spinal cord)
-




I
Motor nerves (multipolar) Sensory nerves Cunipolar)
(CNS → effectors) (receptors → CNS)
decided
-Senses
+
movements

Automatic nervous system
(CNS → involuntary muscles and glands)
- Somatic nervous systems
(Receptors → CNS)



Sympathetic nervous system Parasympathetic nervous system
• prepares for fight or
• returns body back to normal
flight Cadrenelin]
Ea
relationship opposite job but work together
Antagonistic
-
.