Ch 5 Nervous vs Endocrine
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5 terms
Terms | Definitions |
|---|---|
 nervous | the primary control system of the body; system that transmits electrical impulses to skeletal muscles/exocrine glands; is wired - sends electrical signals through distinct (finger) highly organized pathways (which have interconnected parts); coordinates rapid/precise responses; signals using an action potential (brief duration); target cells: skeletal muscles/glands |
| endocrine | the secondary system of the body; system that secretes hormones (chemical messengers) into the circulating blood to distant sites in the body; glands are NOT connected*** + are scattered throughout the body; longer duration; requires a flow of blood to send a message; effect of hormone lasts longer (puberty/pregnancy/digestion/blood formation) |
| receptor | any cell that has a _________ will respond; once the hormone is there, it stays |
| neuron | nervous cell; has a close anatomic relationship to its target cells; has a narrow range of influence; releases a specific neurotransmitter to a specific target cell (NOT the case for endocrine) target cells have specific receptors that bind to the neurotransmitter secreted by a ______ can potentially signal other cells/is limited to the target cells in close proximity to that neuron |
| functional | relationship between nervous/endocrine systems; often influence the same body process Heartbeat: vagus nerve >> SA node >> heartrate OR stab them with an epipen epinephrine >> increase heartrate |
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