Unit 1- 1.2 Flashcards
takes in info from the world and body tissue and sends it to other parts of the body and other tissues
nervous system
body decision maker
central nervous system (CNS)
gathers info and transmit it to other body parts
peripheral nervous system
transmit electrical impulses throughout the body
nerves
carries messages from the body’s tissue and sensory receptors inward to the brain and spinal cord for processing
sensory neurons
carries instructions from the central nervous system out to the body’s muscles and glands
motor neurons
the neurons and spinal cord that communicate internally and intervene between the sensory inputs and motor outputs
interneurons
voluntary control of skeletal muscles
somatic nervous system
Controls self-regulated actions of internal organs and glands
autonomic nervous system (ANS)
fight-or-flight mode, heart accelerates
sympathetic nervous system
rest-and-digest, heart race slows down
parasympathetic nervous system
simple autonomic response to stimulus like a knee jerk reflex
reflex
