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Produces the hormones that promote the development of the female secondary sexual characteristics at puberty
produces a hormone that controls blood levels of clacium and potassium by their removal from bone tissue
the antagonistic hormones that regulate the blood clacium level are calcitonin parathyroid hormone
both "turn on" factors (hormonal, humoral, and neural stimuli) and "turn off" factors (feedback inhibition and others) may be modulated by the activity of the nervous system
with age chronic stress increases blood levels of cortisol and appears to contribute to memory deterioration
type 2 diabetics may reflect declining receptor sensitivity to insulin rather than decreased insulin production
atrial natriuretic peptide is a hormone that controls blood pressure in part by increasing the urinary excretion of sodium
although glucagon is a small polypeptide it is nevertheless very potent in its regulatory effects
the thyroid gland is a large gland that controls metabolic functions throughout the life of an individual
many hormones synthesized in the gastrointestinal tract are chemically identical to brain neurotransmitters
the endocrine gland that is probably malfunctioning if a person has a high metabolic rate is parathyroid
Growth hormone always exerts its influence by targeting other endocrine glands to produce hormones
glucocorticoids are steroid hormones that usually enhance the immune responses when an individual is suffering from severe stress
all edenohypophyseal hormones except GH affect their target cells via a cyclic AMP second messenger
nearly all of the protein or amino acid based hormones exert their effects through intracellular
chemical substances secreted by cells into the extracellular fluids and that regulate the metabolic function of other cells in the body are called
Which of the following is a sign of diabetes mellitus
polyuria, polydipsia, polyphagia (all of these)
thyroid hormone exerts its influence by
entering some cells and binding to intracellular receptors within the nuclei
Production by the adrenal gland is insignificant compared with sex hormone release from the gonads during late puberty
Sometimes prolonged excessive exposure to high hormone concentrations causes a phenomenon known as
which of the following is not a change that may be caused by hormonal stimulus
direct control of the nervous system
the ability of a specific tissue or organ to respond to the presence of a hormone is dependent on
the presence of the appropriate receptors on the cells of the target tissue or organ
the neurohypophysis or posterior lobe of the putuitary gland is not a true endocrine gland because
it is only a hormone storage area that receives hormones from the hypothalamus for release
steroid hormones exert their action by
entering the nucleus of a cell and initiating or altering the expression of a gene
the second messenger mechanism of hormone action operates by
binding to specific receptors and employing the services of G proteins and cAMP
hormones often cause a cell to elicit multiple responses; this is because
during protein kinase activation enzymes phosphorylate many other enzymes
cells that respond to peptide hormones usually do so through a sequence of biochemical reactions involving receptor and kinase activation. in order for cells to respond it is necessary for first and second messengers to communicate. this is possible because
G protein acts as the link between first and second messengers
thyroid hormone ( a small iodinated amine) enters target cells in a manner similar to
steroid hormones because both diffuse easily into target cells
when it becomes necessary to enlist the fight or flight response a hormone that is released during the alarm phase of the general adaptation syndrome is
one of the least complicated of the endocrine control systems directly responds to changing blood levels of ions and nutrients. which of the following describes this mechanism
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