Search Results for: ovaries
Follicle-stimulating hormone
Follicle Stimulating Hormone Definition In the pituitary gland of the brain, gonadotropic hormones are released.... Read More
Sex Reversal – When Males Grew Ovaries Instead of Testes
Summary: Sex reversal is not unusual in some animals, especially in invertebrates. As for the vertebrates, there are... 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
Human Reproduction
Terminology and Concepts Primary reproductive organs are called gonads - testes in the male and ovaries in the female.... Read More
Angiosperm
Angiosperms Definition What is an angiosperm? An angiosperm is a plant that produces flowers. The angiosperms, also... 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
Principles of Hormonal Control Systems
Hormones are chemical messengers that enter the blood directly upon their secretion from endocrine glands. A single gland or... Read More
Feedback mechanism
Feedback Mechanism Definition What is a feedback mechanism? A feedback mechanism is a physiological regulation system in a... Read More
Gonadotropin
Definition noun, plural: gonadotropins A polypeptide hormone secreted by the anterior pituitary and the placenta, and acts... Read More
Smooth endoplasmic reticulum
Smooth Endoplasmic Reticulum Definition Smooth endoplasmic reticulum (sER) is part of or a region in the endoplasmic... Read More
Hermaphrodite
We all know that typically living organisms are divided into two main categories of sex-based on their biological structure.... Read More
First time! Human blood cell turned into a young sex cell
In essence, our body consists of two major types of cells – one group involved directly in reproducing sexually (called... Read More
Endoplasmic reticulum
Endoplasmic Reticulum Definition The endoplasmic reticulum is a membrane-bound organelle in cells of eukaryotic cells... 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
Molecular Basis of Temperature-Dependent Gender of Red-Eared Slider Turtle
Imagine a child inside a womb with a sex yet to be decided not by the pair of sex chromosomes but by the ambient temperature... Read More
Pleiotropy
Pleiotropy Definition When one single gene starts affecting multiple traits of living organisms, this phenomenon is known... Read More
Embryology
Embryology Definition Embryology is a branch of biology that deals with the topics concerning gamete formation... Read More
Parthenogenesis
To reproduce, by definition, means to produce new offspring. The process is referred to as reproduction, which is one of the... Read More
Seed Plants
There are two main subdivisions of seed plants—the ones without covered seeds, the gymnosperms, and the ones with covered... Read More
Fruits, Flowers, and Seeds
Flowering plants grow in a wide variety of habitats and environments. They can go from germination of a seed to a mature... 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
Simple cuboidal epithelium
Definition noun, plural: simple cuboidal epithelia Simple epithelium composed of cuboidal epithelial cells Supplement A... 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
Endocrine system
Definition noun The bodily system consists of the endocrine glands, and is responsible for the production and secretion of... Read More
Primary oocyte
Definition noun, plural: primary oocytes The oocyte that arises from the oogonium via the process of oocytogenesis, and... Read More
Peritoneum
What is the Peritoneum? The term peritoneum refers to the serous membrane that constitutes the biologically active inner... Read More
Testosterone
Definition noun, plural: testosterones A steroid hormone with a chemical formula of C19H28O2, and is regarded as the primary... Read More
Urinogenital
urogenital: of or pertaining to the urinary and the reproductive systems. urogenital systems:the urinary and the genital... Read More
Pollen Grain
What are Pollen Grains? Plants are unique structures and so they carry out mechanisms in special ways. Fertilization in... Read More
