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Portage A&P I Module 6 Exam 2024/2025 Questions With Completed & Verified Solutions.
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Portage A&P I Module 6 Exam 2024/2025 Questions With Completed & Verified Solutions.
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Portage A&P I Module 6nervous system - ANS -uses neurotransmitters (chemical messenger) to influence other
neurons, glands, & muscles
-reacts quickly to external & internal stimuli
endocrine system - ANS -uses hormones that are release into blood which then interact with
cells throughout the body
-reacts slower: hormones take time to get to their destination & only certain hormones can be
accepted by certain receptors
hormone - ANS -organic chemical produced by one set of cells that affects a different set of
cells
-are chemical messengers which influence cellular metabolism
-many are proteins that are coded for by genes & synthesized within ribosomes
-packed into vesicles at Golgi complex & secreted through plasma membrane
2 categories of hormones - ANS peptide hormone & steroid hormone
peptide hormone - ANS -derived from proteins & catecholamines
-active existing enzymes in cell -> tend to act quickly for shorter period of time
steroid hormone - ANS -derived from cholestrol
-changes protein synthesis->act more slowly because protein synthesis takes longer than to
activate pre-existing enzymes
-stored within fat droplets
-enter cell freely at nucleus
-more sustained effect of metabolism
hormone-receptor complex - ANS complex that forms when steroid hormone binds to receptors
in nucleus
2 types of glands of endocrine system - ANS endocrine glands & exocrine glands
endocrine glands - ANS ductless; secrete their own contents directly into bloodstream
exocrine glands - ANS -have ducts; secrete contents into epithelial surface
-example: salivary glands secrete salivary amylase into mouth
primary endocrine organs - ANS secrete hormones that chemically regulate body functions
7 glands:
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