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HaneyEndocrine1
| Question | Answer |
|---|---|
| Endocrine glands secrete what into the blood? | chemicals (hormones) |
| What general functions do hormones perform? | communication and control |
| cells acted on by hormones are called? | target cells |
| organs containing target | target organs |
| nonsteroid hormones | first messengers |
| Hormone secretion is controlled by? | homeostatic feedback |
| negative feedback | mechanisms that reverse the direction of a change in a physiological system |
| positive feedback | (uncommon) mechanisms that amplify physiological changes |
| Prostaglandins | are powerful substances found in a wide variety of body tissue |
| TSH | stimulates growth of the thyroid gland |
| ACTH | Stimulates growth of the adrenal cortex and stimulates it to secrete glococortioids |
| FSH | initiates growth of ovarian follicles each month in the ovary and stimulates one or more follicles to develop to the stage of maturity and ovulation |
| LH | acts with FSH to stimulate estrogen secretion and follicle growth to maturity |
| GH | Stimulate growth by accelerating protein anabolism |
| PRL or lactogenic hormone | Stimulates breast development during pregnancy and secretion of milk after the delivery of the baby |
| ADH | accelerates water reabsorption from urine in the kidney tubules into the blood thereby decreasing urine secretion |
| Oxytocin (OT) | stimulates the pregnant uterus to contract |
| What secrets Glucagon | alpha cells |
| What secrets Insulin | beta cells |
| Anterior pituitary gland | Adenohypophysis |
| Posterior pituitary gland | neurophypophysis |
| Where is the thymus located | mediastinum |
| example of positive feedback | labor |