Category: Pc-Pg
-
Penis, erection of the
The state of the penis when it is filled with blood and becomes rigid. The penis contains two chambers called the corpora cavernosa, which run the length of the organ, are filled with spongy tissue, and are surrounded by a membrane called the tunica albuginea. The spongy tissue contains smooth muscles, fibrous tissues, spaces, veins, and arteries.…
-
Penis
The external male sex organ. The penis contains two chambers, the corpora cavernosa, which run the length of the organ. These chambers are filled with spongy tissue and surrounded by a membrane called the tunica albuginea. The spongy tissue contains smooth muscles, fibrous tissues, spaces, veins, and arteries. The urethra, which is the channel for urine and ejaculate,…
-
Penile
Of or pertaining to the penis.
-
Penicillin
The most famous of all antibiotics, named for the fungal mold Penicillium notatum from which it is derived. Penicillin acts by destroying the cell wall of bacteria. Penicillin is active against a number of types of bacteria including Streptococcus pneumoniae, Listeria, Neisseria gonorrhoea, Clostridium, Peptococcus, and Peptostreptococcus. Most staphylococci now are resistant to penicillin. Today, manyderivatives of penicillin are available which act on…
-
Pelvis
The lower part of the abdomen, located between the hip bones. Structures in the female pelvis include the uterus, vagina, ovaries, fallopian tubes, bladder, and rectum. Structures in the male pelvis include the bladder, rectum, prostate, testicles, and penis.
-
Pelvic pain
Pain perceived in the area of the pelvis, the lower part of the abdomen located between the hip bones. The term pelvic pain is most commonly used to refer to pain arising from reproductive organs (uterus, fallopian tubes, ovaries, vagina) in women. Pelvic pain can have numerous causes, including menstrual cramps; pain from a rupture of an ectopic pregnancy, ovarian cyst, or other mass; endometriosis; and pelvic inflammatory disease.…
-
Pelvic inflammatory disease (PID)
Ascending infection of the female upper genital tract (the female structures above the cervix). PID is the most common and serious complication of sexually transmitted diseases (STDs), aside from AIDS, among women. The signs and symptoms of PID include fever, foul-smelling vaginal discharge, extreme pain, including pain during intercourse, and vaginal bleeding. PID can scar the fallopian tubes, ovaries, and related structures and…
-
Pelvic
Having to do with the pelvis, the lower part of the abdomen, located between the hip bones.
-
Pellagra
A disease due to deficiency of niacin, a B-complex vitamin. Pellagra is the “disease of the four D’s” — Other features are ulcerations within the mouth (glossitis), nausea. vomiting, seizures and balance disorder (ataxia). Pellagra is now rare in developed countries which enjoy balanced diets and fortified foods, but it was once a huge public health problem in…
-
Peliosis hepatis
A rare condition in which the liver contains multiple, randomly-distributed blood-filled spaces or cavities ranging in size from millimeters to several centimeters in diameter. Peliosis hepatis has been associated with the use of anabolic steroids and other hormones such as oral contraceptive pills. It has also been observed in association with both benign and malignant liver tumors, infections, and the use of certain…