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Function of the Nervous system
coordinates all the activities of the body
Receive information about our surroundings from sense organs also known as ____________ by way of ___________.
receptors, sensory nerves
The information perceived is processed in ___________ and ____________.
brain, spinal cord
The human react to that information through a command from the brain or spinal cord by way of ___________ to the ____________.
motor nerves, effectors
Major divisions of the Nervous System
Central Nervous System (CNS) and Peripheral Nervous System (PNS)
Central Nervous System (CNS)
main processing center of the entire nervous system
parts of the central nervous system
brain and spinal cord
Main parts of the brain
cerebrum, cerebellum, brain stem
Cerebrum
controls our activity, thought, 5 senses and seat of consciousness and control of all voluntary actions
Cerebellum
controls balance and coordination, located at bottom of cerebrum
Brain Stem
Connects the brain and spinal cord, controls automatic functions
Spinal Cord
serves as the channel for signals between the brain and the rest of the body, controls simple musculoskeletal reflexes without input from the brain
Peripheral Nervous System (PNS)
connects the CNS to the limbs and organs, contains all the nerves outside of the CNS
Main Divisions of PNS
somatic and autonomic nervous system
somatic nervous system
voluntary control of the body, functions we are aware of and can consciously influence
parts of the somatic nervous system
spinal nerves and cranial nerves
spinal nerves
nerve fibers carry motor and sensory signals between the spinal cord and the body
cranial nerves
carry information into and out of the brain
autonomic nervous system
control system that acts largely unconsciously
and regulates bodily functions, involuntary control.
subdivisions of autonomic nervous system
sympathetic nervous system and parasympathetic nervous system