Search Results for: lumen
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
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
Chlorophyll
Why are most plants green? Have you ever had the same question? Perhaps, you’ve been told that the plants are green... Read More
Digestion and Absorption of Food
The gastrointestinal (GI) system includes the gastrointestinal tract (mouth, pharynx, esophagus, stomach, small intestine,... Read More
Spermiogenesis
Spermiogenesis Definition Spermiogenesis is the stage of spermatogenesis wherein the spermatids differentiate into mature... 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
Golgi apparatus
Definition noun Gol·gi ap·pa·rat·us, ˈgɔl dʒi ˌæpəˈreɪtəs (cell biology) An organelle that is comprised of... Read More
Lymph capillary
Definition noun, plural: lymphatic capillaries (anatomy) A minute, thin-walled vessel of the lymphatic system that is... Read More
Alimentary canal
Definition of Alimentary canal What is the alimentary canal? The alimentary canal is a muscular hollow continuous tubular... Read More
Condyloid joint
A joint is a point where two bones are attached and are capable of movement. The joints not only provide the movements of... Read More
Complete dominance
Complete Dominance Definition Genetics is the study of how traits are inherited by organisms and in what ways these... Read More
Simple squamous epithelium
Simple Squamous Epithelium Definition Simple squamous epithelium, also known as simple squamous epithelial tissue or... Read More
Perinuclear space
Definition noun plural: perinuclear spaces per·i·nu·cle·ar space The space or gap between the inner and outer... Read More
Aldosterone
Definition noun, plural: aldosterones A mineralocorticoid with a chemical formula of C21H28O5, and controls salt and water... Read More
Endoplasmic reticulum
Definition noun plural: endoplasmic reticula (cell biology) A membrane-bound organelle that occurs as labyrinthine,... Read More
Photosynthesis
Photosynthesis is a physio-chemical process carried out by photo-auto-lithotrophs by converting light energy into chemical... Read More
Smooth endoplasmic reticulum
Smooth Endoplasmic Reticulum Definition Smooth endoplasmic reticulum (sER) is (a part of) endoplasmic reticulum that is... Read More
Carbohydrate
Carbohydrate Definition A biomolecule refers to any molecule that is produced by living organisms. As such, most of them... Read More
Lysosomal enzyme
Definition noun plural: lysosomal enzymes ly·so·somal en·zyme, ˈlaɪsəˌsoʊm əl ˈɛnzaɪm (biochemistry) Any of... Read More
Glycocalyx
What is the Glycocalyx? The glycocalyx is a polysaccharide-based gel-like, highly hydrous cellular thin layer, covering... Read More
Rough endoplasmic reticulum
Definition noun plural: rough endoplasmic reticula (cell biology) A type of endoplasmic reticulum wherein polyribosomes... Read More
Metaphloem
Definition noun, plural: metaphloems A component of the primary phloem that develops often following the differentiation of... Read More
Tracheary elements
Definition noun (botany) The principal conductive cells of the xylem associated with the conduction of water and minerals... Read More
Extracellular digestion
Definition noun A form of digestion wherein the breaking down of materials into smaller, absorbable components takes place... Read More
Intracellular digestion
Intracellular Digestion Definition What is intracellular digestion? ‘Intra’ means "inside" and ‘cellular’ pertains... Read More
Movement of Molecules Across Cell Membranes
Diffusion Diffusion is essentially the movement of molecules from a region of higher concentration to a region of lower... Read More
Merocrine gland
Definition noun, plural: merocrine glands A type of exocrine gland in which the secretory products are released without... Read More
Genetic Information and Protein Synthesis
Genetic Code Genes are sequences of DNA nucleotides that carry and transmit the information specifying amino acid sequences... Read More
Holocrine gland
Definition noun, plural: holocrine glands A gland releasing a secretion consisting of disintegrated cells and their... Read More
Translation
Translation, in general, is the conversion of something into another form, such as a word from one language to another. But... Read More
Internal os
Definition noun The part of the cervical canal, forming an internal narrowing of the uterine cavity Supplement The cervix... Read More
External os
Definition noun A small, somewhat circular aperture on the extremity of the extocervix Supplement At the lower part of the... Read More
Cell Structure
The interior of the cell is divided into the nucleus and the cytoplasm. The nucleus is a spherical or oval-shaped structure... Read More
Nematology
Definition noun The scientific study of nematodes (roundworms) Supplement Nematology is a branch of biology that deals... Read More