167 results found

Search Results for: secretion

Secretion

Definition noun, plural: secretions (1) The physiological process of synthesizing and eventually releasing substances from... 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

Human Reproduction

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

Kidneys and Regulation of Water and Inorganic Ions

Renal Functions Kidneys remove/add substances from/to the plasma. Regulate water concentration, inorganic ion... Read More

Digestion and Absorption of Food

The gastrointestinal (GI) system includes the gastrointestinal tract (mouth, pharynx, esophagus, stomach, small intestine,... Read More

Positive feedback

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

Endomembrane system

Ever wondered how biomolecules are made within the cell and then they are released outside the cell for use by the body?... Read More

Regulation of Organic Metabolism, Growth and Energy Balance

Organic Metabolism Events of Absorptive and Post-absorptive States. The absorptive state is the period during which... Read More

Ganglia

Ganglia Definition What are ganglia? To simply define ganglia in biology, it is the structure of an oval shape that... Read More

Golgi apparatus

Definition noun Gol·gi ap·pa·rat·us, ˈgɔl dʒi ˌæpəˈreɪtəs (cell biology) An organelle that is comprised of... Read More

Homeostasis

Homeostasis is the tendency not to stray from the range of favorable or ideal internal conditions. Such conditions must be... Read More

Simple squamous epithelium

Simple Squamous Epithelium Definition Simple squamous epithelium, also known as simple squamous epithelial tissue or... Read More

Organelle

An organelle refers to any of the various cellular structures that perform a distinctive function inside a cell. The cell is... 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

Parietal cell

Definition noun, plural: parietal cells Any of the epithelial cells in the gastric gland responsible for the secretion of... Read More

GERL

Definition noun Acronym for Golgi - Endoplasmic Reticulum - Lysosome complex, a system found in the cell that involves... Read More

Holocrine gland

Definition noun, plural: holocrine glands A gland releasing a secretion consisting of disintegrated cells and their... Read More

Gastrin

Polypeptide hormone secreted by the mucous lining of the stomach; induces the secretion of gastric juice.A hormone produced... Read More

Epithelium

An epithelium is a type of animal tissue made up of densely packed cells (called epithelial cells) that rest on a basement... Read More

Aldosterone

Definition noun, plural: aldosterones A mineralocorticoid with a chemical formula of C21H28O5, and controls salt and water... Read More

Pancreas

Definition noun, plural: pancreases or pancreata A tongue-shaped glandular structure involved in the secretion of fluid... Read More

Tear

Definition noun, plural: tears (physiology) The watery secretion of the lacrimal glands verb To pull (apart) by force or by... Read More

Secretion vector

Definition noun A vector in which the protein product is expressed and eventually secreted by the cell. Supplement See... Read More

Eukaryotic cells

Eukaryotic Cells Definition What is a eukaryotic cell? The term “cell” is a common word in biology, anatomy, and... Read More

Lactation

Lactation (Science: obstetrics) The period of the secretion of milk. Origin: L. Lactatio, from lactare = to suckle The... Read More

Cell Biology

It only takes one biological cell to create an organism. In fact, there are countless species of single celled organisms,... Read More

Pancreatic juice

Definition noun The transparent fluid secreted by the pancreas composed mainly of water, electrolytes, and... Read More

Smooth endoplasmic reticulum

Smooth Endoplasmic Reticulum Definition Smooth endoplasmic reticulum (sER) is (a part of) endoplasmic reticulum that is... Read More

Nervous System

    THE is the most complicated and highly organized of the various systems which make up the human body. It is the... Read More

Lymph nodes

Lymph nodes definition Lymph nodes are small, bean-shaped organs located in different parts of the body and act as... Read More

Pre-ejaculate

Definition noun The clear colorless fluid emitted from the urethra of an aroused penis prior to ejaculation Supplement In... Read More

Areolar gland

Definition noun, plural: areolar glands Any of the sebaceous glands in the areola surrounding the nipple Supplement Areolar... Read More

Gastric chief cell

Definition noun, plural: gastric chief cells An epithelial cell that is found mainly in the mucosal layer of the stomach... Read More

G cell

Definition noun, plural: G cells The cell that secretes gastrin, and chiefly located in the stomach and... Read More

Animal cell

An animal cell is the fundamental functional unit of life of animals. It is also the basic unit of reproduction. Animal... Read More

Plant Cells vs. Animal Cells

Plant Cells Most cells are not visible with the naked eye. However, with microscopes of various types, plant cells can be... Read More

Circulation

Blood Blood is composed of a liquid, plasma, and blood cells such as erythrocytes (red blood cells,) leukocytes (white... Read More

Mineralocorticoid

Definition noun, plural: mineralocorticoids Any of a group of corticosteroids produced by the adrenal cortex that act on the... Read More

Biological Cell Introduction

It only takes one biological cell to create an organism. In fact, there are countless species of single-celled organisms,... Read More

Parenchyma

Parenchyma Definition What does parenchyma mean? Let's define the word "parenchyma". Most of the functional tissues in... Read More