24 results found

Search Results for: menstrual cycle

Menstrual cycle

Definition noun The reproductive cycle of human and other animal (e.g. certain primates) females, and is comprised of phases... Read More

Infradian rhythm

What is the Infradian Rhythm? An infradian rhythm is a type of biological rhythm that lasts longer than 24 hours, with a... Read More

Polymenorrhoea

Definition noun A menstrual cycle disorder experienced by certain women, and is characterized by menstrual cycles with... Read More

Follicle-stimulating hormone

Follicle Stimulating Hormone Definition In the pituitary gland of the brain, gonadotropic hormones are released.... 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

Menstruation

Definition noun The periodic physiologic discharge through the vagina of blood, cervical mucus, vaginal secretions, 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

Reproductive system

What is the Reproductive System? The reproductive system of an organism is the biological system made up of all the... Read More

Positive feedback

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

Ovarian cycle

Definition noun The cycle that depicts the changes in the ovarian follicle happening during a menstrual cycle, and is... Read More

Human Reproduction

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

Hypermenorrhoea

Definition noun The extremely heavy or long periods of menstrual period in a woman of reproductive... Read More

Chronobiology

Chronobiology Definition Chronobiology is a branch of biology that studies time-related phenomena (e.g., biological... Read More

Fetus

The science of Embryology and Fetal development has fascinated mankind since time immemorial. After the embryonic stage, the... 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

Estrogen

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

Integumentary system

Integumentary System Definition The integumentary system is the outermost layer of the body. The animal body, in... Read More

Progestogen

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

Labia

Labia Definition Often, when persons think of the female reproductive system, they think of the vagina. However, the female... Read More

Spinnbarkeit

spinnbarkeit The stringy, elastic character of cervical mucus during the ovulatory period; in contrast to other times in the... Read More

Climacteric

Climacteric (Science: plant biology) a particular stage of fruit ripening, characterised by a surge of respiratory activity... Read More

Sexual selection

What is Sexual Selection? The definition of sexual selection is very interesting in biological terms. The sexual selection... Read More

Progesterone

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