Divisions of the nervous system and parts of the brain Flashcards
What structures does the CNS consist of
brain and spinal cord
What is the function of the CNS
to process information received from the sense organs and send nerve impulses to muscles or glands which produce a response
what is the function of sensory neurons
carry impulses from sense organs to CNS
What is the function of motor neurons
to carry impulses from the CNS to muscles and glands
What does the peripheral nervous system consist of
all the neurons that radiate from the CNS
What is the function of Autonomic nervous system
to control body functions that happen automatically
What is the function of the somatic nervous system
required for conscious control of movements
it controls the voluntary movement of skeletal muscles
Give examples of bodily functions that are controlled by the ANS and happen automatically
heart rate
breathing rate
blood water and glucose levels
What is the function of the sympathetic nervous system
prepares body for action
increases heart, breathing rate, slows down peristalsis and the production of intestinal secretion
What is the function of the parasympathetic nervous system
Calms body down
decreases heart, breathing rate, speeds up peristalsis and the production of intestinal secretion
What is converging neural pathway
impulses from several neurons travel to one neuron
What is the effect of converging pathway on impulse
increases the sensitivity to excitatory or inhibitory signals
What si a diverging neural pathway
impulses form one neuron travels to several neurons
What is the effect of diverging pathway on the impulse
impulses are sent to several destinations at the same time
What is reverberating neural pathway
neurons later in the pathway link with earlier neurons
What is the effect of a reverberating pathway on the impulse
Impulses are sent back through the circuit
this allows repeated stimulation of the pathway
What does the PNS consist of
SNS and ANS
What does the somatic nervous system contain
sensory and motor neurons
What does antagonistic mean
have opposite effects on the same structure
