Nervous Systems Flashcards
LTP
refers tot he long-lasting enhancement pf synaptic transmission due to repeated, strong stimulation.
LTD
is the long-lasting decrease in the strength of the synaptic transmission and neuronal response, due to lack of stimulation
central NS
comprises the brain and spinal cord. its role is to receive information from and transit information to the PNS.
brain
receives information about our internal and external worlds via the spinal cord from the PNS, regulates and guide our thoughts, emotions and behaviour.
spinal cord
acts as an intermediary connecting the brain and the PNS through two neural pathways. enables the spinal reflex arc.
peripheral NS
carries information ot the CNS from the body’s muscles, organs and glands (internal) and sensory organs (external). carries information away from the CNS to the body’s muscles, organs and glands. in summary, transmits information from and to the body and CNS.
somatic NS
the. network of nerves that carries messages from the sensory receptors in the body to the CNS and motor messages from the CNS to the skeletal muscles.
autonomic NS
connects the CNS to the body’s internal visceral muscles, organs(heart,lungs) and glands (sweat, salivary, adrenal) regulating their activity. self regulating.
sympathetic NS
the division of the autonomic NS which is responsible for increasing the activity of most visceral muscles organs and glands in times of vigorous activity, stress or threat. prepares body for action.
parasympathetic NS
the division of the autonomic NS that is responsible for decreasing the activity of most visceral muscles organs and glands, restoring or maintaining body functioning at its normal state. calms body after action.
enteric NS
the division of the autonomic NS which is embedded within the walls of the gastrointestinal tract and is dedicated to its functioning.
