Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «E»:
Endocardium: The lining of the interior surface of
the heart chambers. The endocardium consists of a layer of endothelial cells and an underlying layer of connective tissue....
Endocervical curettage: The removal of tissue from the inside of
the cervix using a spoon-shaped instrument called a curette....
Endochondral bone: Any bone that develops in and replaces cartilage.
The cartilage is partially or entirely destroyed by the process of calcification. The cartilage is then resorbed (reabsorbed), leaving bone in its place. Many bones are formed this way, particularly the long bones of the arms, legs...
Endocrine: Pertaining to hormones and the glands that make and secrete them into the bloodstream through which they travel to affect distant organs. The endocrine sites include the hypothalamus, pituitary gland, pineal gland, thyroid, parathyroids, heart (which makes atrial-natriuretic peptide), the...
Endocrine gland: A gland that secretes a substance (a hormone) into the bloodstream. The endocrine glands are "glands of internal secretion." They include the hypothalamus, pituitary gland, pineal gland, thyroid, parathyroid glands, heart (which makes atrial-natriuretic peptide), the stomach and int...
Endocrinology: The study of hormones, their receptors, the intracellular signalling pathways they invoke, and the diseases and conditions associated with them.
A medical endocrinologist is a physician who specializes in the diagnosis and management of hormonal conditions. Endocrinologists usually h...
Endocrinopathy: Literally, a
disease of an endocrine gland. A medical term for a hormone
problem. For example, hyperthyroidism, hypothyroidism, etc.
Endoderm: One of the three primary germ cell layers -- the other two are the mesoderm and ectoderm -- in the very early embryo. The endoderm is the innermost of the three layers. It differentiates to give rise first to the embryonic gut and then to the linings of respiratory and digestive tracts and...
Endodermal: Pertaining to the endoderm or to tissues derived from the endoderm....
Endogenous: Inside. For example, endogenous cholesterol
is cholesterol that is made inside the body and is not in the diet. ...
Endometrial ablation: Removal of the lining of the womb. Removing the uterine lining decreases menstrual flow or stops it completely.
The endometrium is the inner layer of the uterus (womb), the uterine lining which is normally shed monthly in response to the hormonal changes of the menstrual period...
Endometrial biopsy: A procedure for sampling the lining of the uterus (the endometrium).
Endometrial biopsy is done to learn the cause of abnormal uterine bleeding (most often), determine the cause of infertility, test for uterine infections, and even monitor the response to certain medications.
Endometrial cancer: Cancer of the womb (the uterus ). Endometrial cancer occurs most often in women between the ages of 55 and 70 years. It accounts for about 6% of cancer in women. Women at elevated risk for endometrial cancer include those who are obese, who have few or no children, who began mens...
Endometrial hyperplasia: A condition
characterized by overgrowth of the
lining of the uterus. Hyperplasia means overgrowth. The
endometrium is the
inner layer of the uterus....
Endometrioid cyst: Part of the condition known as
endometriosis, this type of cyst is formed when endometrial tissue (the mucous
membrane that makes up the inner layer of the uterine wall) grows in the
ovaries. It affects women during the reproductive years and may cause chronic