1. Testosterone
By: Katrina Felipe

2. Steroid hormone
Males: Majority secreted from the testis Small amounts from the outer layer of the adrenal glands
Females: -ovaries
males secrete 10x more testosterone than females

3. Functions
responsible for the male reproductive organs: testes, penis, & prostate
promotes increased muscle mass, bone mass, deepening of the voice, maturation of facial structures, & growth of body hair during puberty

4. Hypothalamus secretes GnRH
Pituitary senses higher levels of GnRH and releases gonadotropin
Testicles sense the higher levels of that & release testosterone
Hypothalamus senses high levels of testosterone and decreases amount of GnRH
Hypothalamus/Pituitary Negative Feedback System

5. Analogy
Testosterone
Testes
Testes= produces testosterone

6. Hypogonadism When the body’s sex glands produce little to no hormones
Complications: decreased sex drive, infertility, muscle loss/weakness, enlarged male breasts, decreased body hair growth

8. Works Cited
"Testosterone (male hormone) Information on MedicineNet.com." MedicineNet. 14 Feb <
"Storify." Storify. 14 Feb < testosterone>.
"MEN’S SEXUAL FUNCTION,." Male Sexual Function, Andropause & Testosterone. 14 Feb <
John, M.D. Tina M. St. "3 Roles of Testosterone." LIVESTRONG.COM. 23 June LIVESTRONG.COM. 14 Feb < testosterone/>.