30 results found

Search Results for: estrogen

Estrogen

Definition noun, plural: estrogens A sex steroid hormone produced in large quantities chiefly in the ovaries in females;... Read More

Human Reproduction

Terminology and Concepts Primary reproductive organs are called gonads - testes in the male and ovaries in the female.... Read More

Estradiol

Definition noun, plural: estradiol An estrogenic hormone with a chemical formula of C18H24O2; a potent estrogen; a major... Read More

Positive feedback

Positive Feedback Definition Each mechanism of the body like temperature, blood pressure, and levels of specific nutrients... Read More

Sex steroid

Definition noun, plural: sex steroids A steroid hormone that when bound to specific sex hormone receptor becomes active and... Read More

Feedback mechanism

Feedback Mechanism Definition What is a feedback mechanism? A feedback mechanism is a physiological regulation system in a... Read More

Hormone Production

Reviewed by: Mary Anne Clark, Ph.D. Hormones are chemical messengers produced by glands in the endocrine system.... Read More

Physical Development in Humans

The Newly Born Child Depending on the nutrients available to the child within pregnancy and the genetic makeup of the... Read More

Anabolic steroid

Definition noun, plural: anabolic steroids Any of the synthetic steroid hormones (androgens) that promote muscle and bone... Read More

Steroidogenesis

Definition noun, plural: steroidogeneses The biosynthesis of steroid hormones from cholesterol by various cells, such as... Read More

Gamete

Definition of Gamete What is a gamete? A gamete is the mature reproductive or sex cell that contains a haploid number of... Read More

Anabolism

Anabolism Definition Metabolic processes involve the conversion of one molecule into another through a sequence of chemical... Read More

Animal Growth Hormones

Reviewed by: Mary Anne Clark, Ph.D. As mentioned in the previous tutorial, hormones are produced in... Read More

Oxytocin

Definition noun, plural: oxytocins An antidiuretic peptide hormone (chemical formula: C46H66N12O12S2) produced chiefly by... Read More

Steroid hormone

Definition noun, plural: steroid hormones A type of steroid that acts as a hormone, and that which is exemplified by sex... Read More

Follicle-stimulating hormone

Definition noun, plural: follicle-stimulating hormones A gonadotropin released by the gonadotropes of the anterior... Read More

Prolactin

Definition noun, plural: prolactins A peptide hormone secreted by lactotropic cell in the anterior pituitary of vertebrates,... Read More

Progesterone

Definition noun, plural: progesterones A progestogen hormone, with a chemical formula of C21H30O2, naturally produced in... Read More

Adipose tissue

Definition noun, plural: adipose tissues A special connective tissue made up mainly of adipocytes that synthesize and store... Read More

Chemical Composition of the Body

In order to fully understand the mechanisms of human physiology, it is important to have an understanding of the chemical... Read More

Lactotroph

Definition noun, plural: lactotrophs An acidophilic cell in the anterior pituitary that releases prolactin Supplement The... Read More

Steroid

Definition noun, plural: steroids Any of the group of fat-soluble organic compounds containing four rings arranged in a... Read More

Progestogen

Definition noun, plural: progestogens A steroid hormone that is activated by the binding to the progesterone receptor, and... Read More

Prolactin-releasing hormone

Definition noun, plural: prolactin-releasing hormones A polypeptide hormone originating in the hypothalamus, and whose... Read More

Luteinizing hormone

Definition noun, plural: luteinizing hormones A gonadotropin released by the gonadotropes of the anterior pituitary, and,... Read More

Uterine cycle

Definition noun The cycle that depicts the changes in the endometrial lining occurring during a menstrual cycle, and is... Read More

Linea nigra

Definition noun (1) A long narrow dark streak running along the midline of the abdomen, from the umbilicus to the pubis (2) ... Read More

Catabolism

Catabolism Definition Catabolism is the branch of the metabolic process that breaks down complex, big molecules into... Read More

Sex hormone

Definition noun A hormone that is secreted by gonads and is involved in the regulation of sexual functions, such as the... Read More

Oestrus

Definition noun A phase in the sexual cycle of female animals characterized by their sexual receptiveness or their... Read More