Infant with Visible Digestive System
Cholesterol Traveling Through Cell Membrane to HDL
Woman Cycling
Female Boxer with visible Skeletal, Digestive, Nervous, Lymphatic and Cardiovascular Systems
Compact and Spongy Bone
Cerebral Cortex Region Related to Hearing
HDL and LDL Subfractionation Test and Vessel Walls
Application of Holter Monitor on Patient
Figure Showing Prostate Cancer Spread
Urine Microalbumin Test for Kidney Failure
Woman with visible Brain showing Serotonin and Dopamine Pathways
Silhouettes on a Beach Representing Stages of Life
The male reproductive system includes the penis, testes, duct system (consisting of epididymis and vas deferens), and accessory glands, which include seminal vesicles and the prostate. Testosterone is the principal sex hormone in males, responsible for the maturation of sex organs and production of sperm, as well as secondary sexual characteristics such as growth of body and facial hair, increased muscle mass, and a deepening voice; testosterone also plays other metabolic roles in the body and is produced in small amounts by females.
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