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Ch 13
A&P 2
| Question | Answer |
|---|---|
| Is it possible to find all the hormones in a blood sample taken from the arm. true or false | true |
| Steroids excert their effects by increasing the amount of cAMP in the target cells. true or false | false |
| Hormones do not stimulate all cell types with equal probability. true or false | true |
| All hormones secreted by the pituitary actually came from the hypothalmus. true or false | false |
| Diabetes insipidus results from an excess production of ADH | false |
| High levels of TSH would suppress thyroxine by negative feedback | false |
| The cells that are stimulated by hormones are referred to as receptors. true or false | false |
| An organ can belong to the digestive and endocrine system simultaneously. true oir false | true |
| Hormones secreted by the adrenal gland can have direct neurological effects. true or false. | true |
| Oxytocin is a peptide hormone secreted by the posterior pituitary. true or false | true |
| Thyroxine is a thyroid hormone also called T3. true or false | false |
| Steroid hormones have their effect on the nucleus and genes of a target cell. true or false | true |
| Non-steroid hormones are called second messengers because they influence the binding site first and the activity site second. true or false | false |
| Different protein kinases, enzymes, stimulate cells to increase their metabolic activities. true or false | true |
| Cyclic guanosine monophosphate is an enzyme which causes the target effects seen with some hormones. true or false | false |
| Prostaglandins are considered hormones, which are stored within cells and released on demand. true or false | false |
| Prostaglandins are known to cause the smooth muscle of the uterus or intestines to contract. true or false | true |
| The levels of insulin in the blood are maintained at constanst, stable, and homeostatic levels. true or false | false |
| The pituitary and andrenal gland can be controlled by the direct influence of the nervous system. true or false | true |
| The pituitary is located within the sella turica of the ethmoid bone, and is attached to the thalamus by the infundibulum. true or false | false |
| As blood levels of the thyroid hormones increase, the secretions of TRH and TSH are reduced. true or false | true |
| Alcohol is known to be a potent anit-aintidiuretic. true or false | true |
| The hypothalmus has chemoreceptors, which are sensitive to changes in blood concentration. true or false | true |
| Diabetes insipidus is a condition that results in edema and swelling because of an excess of ADH. true or false | false |
| Cretinism, a condition of physical and mental retardation, is the result of thyroxine deficiency of. true or false | true |
| In endemic goiter, it is possible to have high levels of TSH but a decrease in the levels oh thyroxine. true or false | true |
| In Grave's disease, thyroxine production can be increased by TSH or autoantibodies that bind to the same receptors of TSH. tgrueor false | true |
| A pheochromocytoma is a tumor of the adrenal cortex which raises blood pressure. true or false | false |
| Male sex hormone can be produced by the testes or adrenal glands. true or false | true |
| Cortisone can either cause or inhibit inflammation. true or false | true |
| The pancreas is an endocrine and exocrine gland that secrets insuline from the alpha cells. true or false | false |
| Cancer cells can produce hormones that affect blood sugar and blood calcium levels. true or false | true |
| Circadian rhythms are those that involve fluctuations that usually last several days. true or false | false |
| Prostaglandins are ______ substances that regulate neighboring cells. | paracine |
| Cyclic AMP functions as a(n) ______ for ______ hormones. [MR-rmembrane receptor] | second messanger; nonsteroid |
| Body uses what to regulate its hormonal releases? | negative feedback, direct nervous stimulation, release of tropis hormones |
| Where are the posterior pituitary hormones manufactued? | in the neurosecretory cells that originte in the hypothalamus |
| There are several types of cells in the anterior pituitary. Which one secret growth hormone? | somatotropes |
| Which anterior pituitary hormone shows increased secretion in response to stress? | adrenocorticotropic hormone |
| Drinking alcohol beverages on hot days is not safe because alcohol inhibits the release of _______ which normally helps conserve water during dehydration. | antidiuretic hormone |
| The thyroid hormones (TH) are responsible for regulating metabolic rate and Ca++ and phosphate ion concentration in the blood. Which TH lowers their concentration in the blood? | calcitonin |
| Hypothyroidism in infants can result in ____? | cretinism |
| The hormone ______, which is secreted by te adrenal _______, causes the kidney to conserve sodium and excrete potassium ions and indirectly helps to maintain systemic blood pressure. | aldosterone; cortex |
| Sex hormones are secreted by ________. | the inner cortex o the adrenal cortex and gonads |
| In the pancreas, ______ cells secrete insulin, which _______ blood levels of glucose. | beta; lowers |
| What seems to be the cause of juvenile-onset or insulin-dependent diabetes mellitus (IDDM)? | immune cells attack the pancreas that can then no longer produce insulin |
| The endocrine gland responsible for the body's circaium rhythm is ______. | pineal |
| Endocrine properties include: | hormone reach targets through the blood, effects are slow and cyclic, efforts caused by chemicals |
| Which of these does not belong with the other? protein, peptide, amino acid, steroid | steroid |
| In the "second messenger" theory, which is the first messenger? | enzyme |
| Which of these is not an endocrine gland? pancreas, testes, salivary gland, parathyroid | salivary gland |
| What are a few funcions of the hypothalamus? | affect heart rate, control temperature, affect water balance |
| What hormone is made by the posterior pituitary? | ADH |
| Which hormone directly affects blood perssure? | ADH |
| The hormone _____ causes the contractions of labor. | oxytocin |
| Which hormone has the greatest influenc on the ability to secrete milk? | prolactin |
| Which hormone causes excessive skeletal growth or gigantism? | somatrotropin |
| Which of these does not directly stimulate the gonands? FSH, TSH, LH, ICSH | TSH |
| Which hormone has the greates effect on metabolism? | (T4) Thyroxine |