3.3 Structure and Organization of Nervous system Flashcards
Central nervous system
brain + spinal cord
Peripheral nervous system
a division of the nervous system that transmits signals between the brain and the rest of the body
Somatic nervous system
nerves that control skeletal muscles (voluntary/reflexive movement) + nerves that receive sensory input - peripheral
Autonomic nervous system
responsible for regulating the activity of organs and glands - peripheral
Sympathetic nervous system
Fight or flight response - prepare body for action (autonomic)
Parasympathetic nervous system
helps maintain homeostatic balance in the presence of change - return to baseline (autonomic)
Cerebral hemispheres
nearly symmetrical halves of the brain that contain the same structures
Brainstem
the medulla (basic functions) + the pons (wakefulness) - (hindbrain)
Reticular formation
extends from the medulla upwards to the midbrain and is involved with attention and alertness (hindbrain)
Cerebellum
is the lobe-like structure at the base of the brain = monitoring of movement + balance + attention + emotional responses
(hindbrain)
Midbrain
Sensory + motor
Parkinson’s disease
a condition marked by major impairments in voluntary movement
Forebrain
includes folds + grooves of outer layer + anything above midbrain
Basal ganglia
3 structures = facilitating planned movements, skill learning, and integrating sensory and movement information with the brain’s reward system
Huntington’s disease
a condition involving uncontrollable movements of the body, head, and face - basal ganglia improper function
