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Endocrin T/F
| Question | Answer |
|---|---|
| The endocrin and the nervouse system perform the same general function. | T |
| Exocrine glands can also release hormones. | F |
| Endocrin glands secrete hormones. | T |
| Hormones are carried to thier target organs by ducts. | F |
| ADH would have no effect on liver cells. | T |
| Nonsteroid hormone receptors are in the nucleus of the cell. | F |
| Nonsteroid hormones require a second messanger. | T |
| ATP is frequently a second messenger of protein hormones. | F |
| Steroid hormone receptors are in the cytoplasm of the cell. | F |
| Steroid hormones use nitrogen oxide as their second messanger. | F |
| Steroid hormone receptors are in the nucleus of the cell. | T |
| Steroid hormones do not need a second messanger because they are able to pass through the cell membrane. | T |
| A cell with an abnormally low number of ribosomes would slow down the effect of a steroid hormone. | T |
| TSH causes an increase in thyroid hormones when their blood level is too low. This is an example of a positive feedback mechanism. | F |
| Most hormones use a negative feedback system for regulation | T |
| Calcitonin is an example of a hormone that uses a negative feedback mechanism for regulation. | T |
| Oxytocin is an example of a hormone that uses a positive feedback mechanism for regulation. | T |
| Positive feedback mechanisms work to return the body to homeostasis. | F |
| Prostiglandins are also called "tissue hormones." | T |
| Prostoglandins made in one part of the body frequently can have an effect on distant parts of the body. | F |
| Research has indicated that prostaglandins work by increasing the number of hormone receptors produced by a cell. | F |
| Another name for the posterior pituitary gland is the adenohypophysis. | F |
| One of the main differences between the anterior and posterior pituitary glands is that one is made of glandular tissue and one is made of nerve tissue. | T |
| The pituitary gland sits in the "Turkish saddle." | T |
| Many of the posterior pituitary hormones are tropic hormones. | F |
| A tropic hormone causes another endocrin gland to release its hormone or grow. | T |
| The target organ for TSH is the thyroid gland. | T |
| ACTH stimulates the adrenal gland to release adrenaline. | F |
| FSH is frequently called the ovulating hormone. | F |
| The target organ for FSH is the ovarian follicle. | T |
| Lutenizing hormone is also called the ovulating hormone. | T |
| Males also produce luteinizing hormone. | T |
| ADH causes water to be excreted in the urine. | F |
| A person who was working hard on a hot day and perspiring freely would proprobly have a fairly high concentration of ADH in his blood. | T |
| Oxytocin stimulates contraction of the pregnant uterus. | T |
| Hyposecretion of ADH results in diabetes mellitus. | F |
| Damage to the hypothalamus may result in diabetes insipidus. | T |
| Although oxytocin is released by the posterior pituitary, it is made in the hypothalamus. | T |
| The thyroid gland is located in the neck. | T |
| Of the two thyroid hormones, T3 is the more abundant. | F |
| The thyroid gland is unique because it stores the hormones it produces. | T |
| A person with a simple goiter would proprobly have high blood levels of TSH. | T |
| Calcitoni cause an increase in blood calcium concentration. | F |
| Parathyroid hormone causes a decrease in blood calcium levels. | F |
| Bone cells are "target organs" for both calcitonin and parathyroid hormone. | T |
| The outer zone of the adrenal cortex secretes mineral corticoids. | T |
| Cortisol is an example of a mineralcorticoid. | F |
| The adrenal medulla releases hormones that support and prolong the effects of the sympathetic nervouse system. | T |
| Pancreatic alpha cells release glucagon. | T |
| Glucagon causes a reduction of the blood glucose concentration. | F |
| Pancreatic beta cells release insulin. | T |
| Lack of production of insulin by the pancreatic alpha cells can cause diabetes mellitus. | F |
| An abnormally low level of insulin production may cause glycosuria. | T |
| The thymus gland is located in the neck and produces thymosin. | F |
| The placenta produces the substance that can be detected by home pregnancy tests. | T |
| ANH is made by the heart and reinforces the effect of aldosterone on the kidney. | F |
| The function of the endocrine system is communication and control. | T |
| Hormones have the same role in the endocrine system as nreve impulses have in the nervous system. | T |
| Substances produced by the exocrine glands cause a reaction by stimulating target organ cells. | F |
| Hyposecretion is a term describing the release of too little hormone. | T |
| In the second messanger system, the hormone is assumed to be the first messanger. | T |
| One difference between prostaglandins and hormones is that prostaglandins circulate throughout the body while hormones go only to target cells. | F |
| If prostaglandins influence the production of cAMP, they could impact the function of steroid hormones. | F |
| An increase in ADH would increase the amount of urine the body produces. | F |
| Hypersecretion of ADH results in Diabetes insipidus. | F |
| The hormone oxytocin has its effects on only about half the population. | T |
| The hypothalamus produces only two hormones, ADH and oxytocin. | F |
| The hypothalamus produces only two hormones with target organs outside the head, ADH and Oxytocin. | T |
| The target cells for T4 are virtually all of the cells in the body. | T |
| The target cells for aldosterone are in the liver. | F |
| One of the target organ cells of glucocorticoids are the liver cells. | T |
| Prolonged release of glucocorticoids increases the activity of the immune system. | F |
| The pancrease is both an endocrine and an exocrine gland. | T |
| If the pancreatic islets produce too little insulin, a condition called diabetes insipidus can occure. | F |
| Glucosuria can be a symptom of diabetes mellitus. | T |