39 results found

Search Results for: ground substance

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

Tissue

Tissue Definition What is tissue in the body? The body tissue is an aggregation of cells that function together and have a... Read More

Substance

Definition noun, plural:substances (1) The physical matter, material or that of which an organ or body consists. (2)... Read More

Bone matrix

Definition noun The intercellular substance of the bone tissue; that part of bone tissue comprised of organic and inorganic... Read More

Hyaline cartilage

Hyaline Cartilage Definition Firstly, let us ask, what is cartilage? Cartilage is a tough and flexible material. It can be... Read More

Dense connective tissue

Definition noun A type of connective tissue that contains chiefly of collagen fibers (type I collagen) relative to the... Read More

Connective tissue

Definition noun, plural: connective tissues The animal tissue that chiefly originates from the embryonic mesoderm, and... Read More

Rhizome

The rhizome is derived from the Greek word rhizoma, meaning "a bunch of roots". Usually, rhizomes are confused with roots;... Read More

Reticular connective tissue

Definition noun A type of connective tissue characterized by the predominance of reticular fibers made of type III collagen... Read More

Fibroblast

Definition noun, plural: fibroblasts Cell of connective tissue that produces and secretes fibers (e.g. collagens, reticular... Read More

Bone tissue

Definition noun, plural: bone tissues A mineralized connective tissue from which bones are made. Supplement The bone tissue... Read More

Loose connective tissue

Definition noun A type of connective tissue proper that holds and binds organs together, and is characterized by its loose,... Read More

Roots

Upon seed germination, the embryo root, called the radicle, grows and develops into the first root. The radicle may thicken... Read More

Parenchyma

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

Extracellular matrix

Definition noun, plural: extracellular matrices The non-cellular portion of a tissue produced and secreted by cells and... Read More

Areolar tissue

Definition noun, plural: areolar tissues A connective tissue in which fibers are loosely arranged in a net or... Read More

Dense irregular connective tissue

Definition noun A form of dense connective tissue in which the extracellular fibers (in particular, collagen fibers) are not... Read More

Matrix

Matrix ground substance in which things are embedded or that fills a space (as for example the space within the... Read More

Growth and Plant Hormones

Growth All living organisms begin in the same form: as a single cell. That cell will divide and the resulting cells will... Read More

Hyaloplasm

Definition noun (1) The liquid component of the cytoplasm. (2) The liquid portion of the nucleoplasm, as in nuclear... Read More

Elastic cartilage

Definition noun A type of cartilage characterized by having cells surrounded by a territorial capsular matrix outside of... Read More

Ice

Ice 1. Water or other fluid frozen or reduced to the solid state by cold; frozen water. It is a white or transparent... Read More

Pearl

pearl 1. (Science: marine biology, zoology) A shelly concretion, usually rounded, and having a brilliant luster, with... Read More

Solid

solid 1. Having the constituent parts so compact, or so firmly adhering, as to resist the impression or penetration of other... Read More

Activation energy

Definition noun The amount of energy (in joules) needed to convert all the molecules in one mole of a reacting substance... Read More

Examples of Natural Selection

Reviewed by: Mary Anne Clark, Ph.D. Darwin's Finches Darwin's finches are an excellent example of the way in... Read More

Natural selection

Natural Selection Definition What is natural selection in biology? Natural selection is defined as a process in nature... Read More

Cell wall

The cell is the structural, functional, and biological unit of all organisms. It is a membrane-bound structure containing... Read More

Plant Tissues

Plants are composed of three major organ groups: roots, stems, and leaves. As we know from other areas of biology, these... Read More

Face

Face 1. The exterior form or appearance of anything; that part which presents itself to the view; especially, the front or... Read More

Green

Green 1. Having the colour of grass when fresh and growing; resembling that colour of the solar spectrum which is between... Read More

Spot

spot 1. A mark on a substance or body made by foreign matter; a blot; a place discoloured. Out, damned spot! Out, I say!... Read More

Inoculation

Inoculation Definition In Immunology, inoculation is defined as the process of introducing an antigenic substance or... Read More

Rub

rub 1. To subject (a body) to the action of something moving over its surface with pressure and friction, especially to the... Read More

Trace

trace 1. To mark out; to draw or delineate with marks; especially, to copy, as a drawing or engraving, by following the... Read More

Oxygen

Oxygen Definition In biochemistry, oxygen is the colorless, odorless, gaseous element represented by the symbol "O", with... Read More

Epidermis

Epidermis Definition What is the epidermis? We can define the epidermis as one or more layers of cells forming the tough... Read More

Wound

Wound 1. A hurt or injury caused by violence; specifically, a breach of the skin and flesh of an animal, or in the substance... Read More