CH 5: Nervous System Flashcards
primary control system of the body
nervous system
provides for higher mental functions and emotional expression, maintains homeostasis, and regulates the activities of
muscles and glands.
nervous system
Communication by the nervous system
involves a combination of
electrical and chemical signals
All body systems are influenced by the
nervous system
Three overlapping functions of the nervous system
- Sensory input
- Processes and interprets- integration
- Response or effect- via motor input
processes and interprets the sensory input
and decides response—a process called
integration
The Central nervous system (CNS) consists of the (2)
brain and spinal cord
Act as the integrating and command centers of the nervous system
central nervous system
Central nervous system _____ incoming sensory information and __ ___ based on past experience and current conditions.
interpret
issue instructions
includes all parts of the nervous system.
peripheral nervous system (PNS)
Peripheral nervous system (PNS) consists mainly of the ____ that extend from
the ____ and____.
nerves
spinal cord
brain
carry impulses to and from the
spinal cord.
spinal nerves
carry impulses to and from the
brain. These nerves serve as communication lines.
cranial nerves
link all parts of the body by carrying
impulses from the sensory receptors to the CNS and from the CNS to the appropriate glands or muscles
peripheral nervous system
consists of nerves that convey impulses toward the CNS
sensory division or afferent division
Functional Classification (2)
-sensory division, or afferent division
-motor division, or efferent division
Two division of sensory division, or afferent division
Somatic Sensory Fibers
Visceral Sensory Fibers
Difference between
Somatic Sensory Fibers
Visceral Sensory Fibers
Somatic Sensory Fibers-delivering
impulses
Visceral Sensory Fibers-transmitting
impulses
Two division of motor division, or efferent division
Somatic Nervous System
Autonomic Nervous System
carries impulses from the CNS to effector organs
motor division, or efferent division
delivering impulses from the skin, skeletal muscles, and joints
Somatic Sensory Fibers
transmitting impulses from the visceral organs
Visceral Sensory Fibers
allows us to voluntarily movement
Somatic nervous system
regulates events that are involuntary movement.
Autonomic nervous system