Term
|
Definition
| from axon terminals and into the synaptic junction and act locally |
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Term
|
Definition
| release by glands or specialized cells and circulate in the blood |
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Term
|
Definition
| secreted by neurons and circulate in the blood |
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Term
|
Definition
| secreted by cells into extracellular fluid and affect neighboring target cells |
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Term
|
Definition
| secreted into extracellular fluid and affect the same cells that produce them |
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Term
|
Definition
| peptides secreted into extracellular and function as autocrines, paracrines, or endocrine hormones |
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|
Term
| What are the three general classes of hormones? |
|
Definition
proteins and polypeptides
steroids
derivatives of the amino acid tyrosine |
|
|
Term
| what hormones are stored in secretory vesicles until needed |
|
Definition
| polypeptide and protein hormones |
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|
Term
| where are polypeptides hormone vesicles stored? |
|
Definition
| cytoplast until they fuse with the membrane and their contents are extruded into the blood |
|
|
Term
| what hormones are not acvite until cleaved into prohormones? |
|
Definition
| polypeptide and protein hormones |
|
|
Term
| where are amine hormones synthesized and stored? |
|
Definition
|
|
Term
| what are amine hormones incorporated into? |
|
Definition
| macromolecules of the protein thyroglobulin |
|
|
Term
| after entering the blood, what do most amine hormones combine with? |
|
Definition
|
|
Term
| negative feedback prevents.... |
|
Definition
| over activity of hormone systems |
|
|
Term
| positive feedbacks allow.... |
|
Definition
|
|
Term
| water soluble hormones are.... |
|
Definition
dissolved in the plasma
diffuse out of the capillaries |
|
|
Term
| steroid and thyroid hormones are... |
|
Definition
bound to plasma proteins
biologically inactive until dissociate from plasma proteins |
|
|
Term
| what are two factors of clearance of hormones from the blood? |
|
Definition
rate of hormone secretion into the blood
rate of removal of the hormone from the blood (metabolic clearance rate) |
|
|
Term
| how are hormones cleared? |
|
Definition
metabolic destruction
binding with tissues
excretion by liver into bile
excretion by kidneys into urine |
|
|
Term
| hormones bound to plasma proteins can be there for.... |
|
Definition
|
|
Term
|
Definition
|
|
Term
| location of the protein peptide hormones |
|
Definition
| in or on the surface of the cell membrane |
|
|
Term
| location of steroid hormones |
|
Definition
|
|
Term
| location of thyroid hormones |
|
Definition
|
|
Term
| water soluble proteins circulate freely and are there for how long? |
|
Definition
|
|
Term
| steroid hormones increase ________ |
|
Definition
|
|
Term
| thyroid hormones increase ____________ |
|
Definition
| gene transcription in the cell nucleus |
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|
Term
| the antibody in radioimmunoassay ____ specific for the hormone. |
|
Definition
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