Nervous System Flashcards
Mechanoreceptors
Sense distortion in body tissues
Sympathetic
Increases activation to prep for activity. Fight or flight. (Autonomic subdivision)
Joint receptors
Respond to pressure, acceleration, and deceleration of joints
Golgi tendon organs (GTO)
Sense changes in muscular tension
Central Nervous System (CNS)
Brain and spinal cord; controls and interprets information
Neuron
Functional unit of nervous system
Muscle spindles
Sense changes in muscle length
Sensory (afferent) neurons
Respond to stimuli; transmit nerve impulses from effector sites to CNS
Nervous System
Communication network within the body
Parasympathetic
Decreases activation during rest and recovery. (Autonomic subdivision)
Motor (efferent) neurons
Transmits nerve impulses from CNS to effector sites
Somatic
Controls outer areas body and skeletal muscle; voluntary. (PNS subdivision)
Peripheral Nervous System (PNS)
Nerves connecting the CNS to the rest of the body and environment
Autonomic
Involuntary systems (e.g., heart, digestion). (PNS subdivision)
