Term
| The production of sperm cells |
|
Definition
|
|
Term
| Secreted by Leydig cells in the interstitium of the testis |
|
Definition
|
|
Term
| Essential for growth and division of the testicullar germinal cells |
|
Definition
|
|
Term
| LH is secreted by what gland? |
|
Definition
|
|
Term
| Stimulates the Leydig cells to secrete testosterone |
|
Definition
|
|
Term
| FSH is secreted by what gland? |
|
Definition
|
|
Term
| Stimlates Sertoli cells which process spermiogenesis |
|
Definition
|
|
Term
| Formed from testosterone, essentil for spermiogenesis |
|
Definition
|
|
Term
|
Definition
|
|
Term
| Controles the background metabolic functions of the testes, promotes early division of spermatogonia which promotes fertility |
|
Definition
|
|
Term
| Sercreted from the leydig cells of the testis |
|
Definition
|
|
Term
| Nonexistant during childhood but are numerous in the newborn male infant for the first few months of life and in the adult male after puberty |
|
Definition
|
|
Term
| Can tumors cause increased secretion of testosterne? |
|
Definition
|
|
Term
| There are secretions of androgens elswhere in the body. Name 2 places. |
|
Definition
1. Adrenal glands secrete at least 5 androgens
2. Ovaries produce minute quantities of androgens |
|
|
Term
| Produced throughout the entire periodof fetal development and for 10 weeks after birth, essentially no testosterone is produced during childhood until about the ages of 10-13. Stimulation of anterior pituitary gonadotropic horones at puberty increases testosterone production and lasts throughout most of the remainder of life. |
|
Definition
|
|
Term
| Responsible for the distinguished characteristics of the maculine body. Descent of testes and growth of genitalia. |
|
Definition
|
|
Term
| This hormone causes growth of hair over the pubis, upward along linea alba of abdomen, on face and chest, and less often on back |
|
Definition
|
|
Term
| Baldness is a decrease in hair growth on top of head. Many virile men never become bald because baldness is also a result of what 2 factors? |
|
Definition
1. Genetic background
2. Large quantities of androgenic hormones |
|
|
Term
| Increases the thickness of skin and development of acne. |
|
Definition
|
|
Term
| Due to an increased rate of secretion by sebaceous glands |
|
Definition
|
|
Term
| Increases protein formation and muscle development. |
|
Definition
|
|
Term
| Development of increasing musculature after puberty is __% more than females |
|
Definition
|
|
Term
| Protein anabolic function also contributes to change in |
|
Definition
|
|
Term
| Excess androgens, especially synthetics used by athletes can be |
|
Definition
|
|
Term
| Can help to increase bone matrix and ca retention |
|
Definition
|
|
Term
| Increases basal metabolic rate, RBcs and has effects on water and elecrolyte balance |
|
Definition
|
|
Term
| When do bones grow considerably thicker and deposit additional Ca salts which increases the total quantity of bone matrix and causes Ca retention? |
|
Definition
|
|
Term
| Believed to be result from general protein anabolic function of testosterone |
|
Definition
|
|
Term
| Name 4 effects of testosterone (ca retenton and bone matrix) on pelvis. |
|
Definition
1. Narrow pelvic outlet
2. Lengthen pelvic outlet
3. Caue a funnel-like shape instead of broad ovoid shape of female pelvis
4. Greatly increases strength of entire pelvis for load bearing |
|
|
Term
| Can be used to treat osteoporosis in older men |
|
Definition
|
|
Term
| Excess __ secreted abnormally in growing child causes inceased bone growth rate, but also causes epiphysis of long bones to unite with shafts of the bones at an early age. This prevents the person from growing as tall as he would have grown. |
|
Definition
|
|
Term
| During adolescence and early adult life, this is increased by 5-10% |
|
Definition
|
|
Term
| The average man has __ more RBC/mm than the averae woman |
|
Definition
|
|
Term
| Does testosterone appear to increase erythropoietin levels or on RBC production? |
|
Definition
|
|
Term
| Can increase reabsorption of Na in distal tubules minorly |
|
Definition
|
|
Term
| Hormone secreted by the hypothalamus that travels to the anterior pituitary gland in the hypophysial portal blood to stimulate the release of LH and FSH |
|
Definition
|
|
Term
| Secretedby gonadotropes in the anterior pituitary gland |
|
Definition
|
|
Term
| Glycoproteins that exert effects on target tissue in testes by activating the cyclic adenosine monophosphate second messenger system |
|
Definition
|
|
Term
| Glycoproteins that exert effects on target tissue in testes by activating the cyclic adenosine monophosphate second messenger system |
|
Definition
|
|
Term
1. Inhibits the ant pit to secrete LH and FSH
2. Testosterone has direct effect on the hypothalamus to decrease the secretion of GnRH which decreases LH and FSH
3. Decrease in LH reduces secretion of testosterone by testes
4. Whenever secretion of testosterone becomes too great, automatic neg feedback effect, thru the hypothalamus and ant pit gland, reduces the testosterone secretion back toward desired operating level. |
|
Definition
| Negative Feedback Control of Testosterone Secretion |
|
|
Term
| Regulates testosterone production via negative feedback mechanisms |
|
Definition
|
|
Term
| Stimuates testosterone secretion by Leydig cells of testes. Quantity of testosterone secretion increases approx in direct proportion to the amount of LH available. |
|
Definition
|
|
Term
| Activates sertoli cells which promotes spermatogenesis. Stimulates secretion of spermatogenic substances |
|
Definition
|
|
