Christopher G. Wood MD FACS


Human Chorionic Gonadotropin (HCG)

Human chorionic gonadotropin (hCG) is a hormone that is usually produced during pregnancy. But some types of cancer can also cause high levels of hCG. The amount of hCG may be measured in blood or urine to see if a woman is pregnant. The test also may be done as part of a screening test for birth defects. High levels of…

Human Chorionic Gonadotropin (HCG)

Human chorionic gonadotropin (hCG) is a hormone that is usually produced during pregnancy. But some types of cancer can also cause high levels of hCG. The amount of hCG may be measured in blood or urine to see if a woman is pregnant. The test also may be done as part of a screening test for birth defects. High levels of…

Vacuum Device for Erection Problems

A vacuum device is a tube made of plastic that fits around the penis to help a man achieve an erection. The man coats the base of his penis with lubricant and inserts it into the tube. The air is pumped out of the tube, which creates a vacuum. A tight band is placed around the base of the penis to maintain the erection…

Testicles

Testicles (testes) are a pair of oval organs in men that produce sperm and the male hormone testosterone. The testicles are located in the scrotum, which is the sac that hangs below the base of the penis.

How Erections Occur

An erection occurs when your imagination or one or more of the senses (vision, hearing, touch, smell, taste) are stimulated and you become aroused. Your central nervous system sends nerve impulses that increase blood flow to your penis. The blood fills the spongy chambers (corpora cavernosa) in the penis, causing them…