NASM -1 Flashcards
(15 cards)
what does the Nervous system do
it is the communication network within the body
Peripheral nervous system subdivisions
somatic and autonomic
central nervous system
brain and spinal cord; coordinated activity ofthe body
Peripheral nervous system
nerves connecting the CNS to the rest of the body and environment
Somatic
serves outer area of the body and skeletal muscle ; voluntary
Autonomic
involuntary system ( heart , digestion )
Autonomic subdivisions
Parasympathetic - decrease activation during rest
Sympathetic - increase activation to prep for activity
Neuron
functional unit of the nervous system
Motor neuron
Efferent - transmit nerve impulses from CNS to effector sites
Sensory Neuron
Afferent - respond to stimuli; transmit nerve impulses from effector sites to CNS
Mechanoreceptors
sense distortion in body tissues
Nervous system Functions (3)
Sensory - changes in the environment
Integrative- analyze and interpret
Motor - The neuromuscular response
Joint receptors
Respond to pressure,acceleration, and deceleration of joints
Gogli Tendon Organs (GTO)
sense changes in Muscular tension
Muscle Spindles
sense changes in muscle length
