104 results found

Search Results for: tissue layer

Simple squamous epithelium

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

Epidermis

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

Myocardium

Myocardium Definition What is the myocardium of the heart?  It is the muscular middle layer of the heart 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

Mesophyll layer

Definition noun, plural: mesophyll layers (botany) The tissue in the interior of a leaf made up of photosynthetic... 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

Sarcolemma

Sarcolemma Definition What is the sarcolemma? It is the thin, transparent, extensible plasma membrane of the muscle cell.... Read More

Parenchyma

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

Hyaline cartilage

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

Cortex

Definition noun, plural: cortexes, cortices (anatomy) The outer layer or region of a structure or an internal organ (botany)... Read More

Leaves

Leaves are highly efficient solar energy converters. They capture light energy and through the process of photosynthesis.... Read More

Stems

External Form of a Woody Twig A woody twig, or stem, is an axis with leaves attached. The leaves are arranged in various... 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

Pith

Pith Definition In general, the term "pith" refers to the "soft inner portion" of something. In botany, a pith refers... Read More

Malpighian layer

Definition noun The lower layer of epidermis consisting of non-keratinized, viable cells, in contrast to the outer (upper)... Read More

Tissue Layer

A pliable sheet of tissue that covers or lines or connects organs or cells of... Read More

Elastic tissue

Definition noun, plural: elastic tissues A connective tissue composed of elastic fibers produced by fibroblasts and can... Read More

Stratified columnar epithelium

A stratified columnar epithelium (plural: stratified columnar epithelia) is a type of stratified epithelium in which the... Read More

Stratified epithelium

Definition noun, plural: stratified epithelia An epithelial tissue comprised of more than one layer of epithelial cells,... 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

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

Stratified squamous epithelium

Definition noun, plural: stratified squamous epithelia A type of stratified epithelium in which the topmost layer is made up... Read More

Respiration

Organization of the Respiratory System Each lung is composed of air sacs called alveoli - the sites of gas exchange with... Read More

Lacuna

Definition of Lacuna What is lacuna? The word "lacuna" (noun, plural: lacunae) is derived from the Latin word- 'lacus',... Read More

Tapetum

Definition noun, plural: tapeta (botany) A layer of nutritive cells within the sporangium, providing nutrition for growing... Read More

Stratified cuboidal epithelium

Definition noun, plural: stratified cuboidal epithelia A type of stratified epithelium in which the topmost layer is made up... Read More

Simple epithelium

Definition noun, plural: simple epithelia An epithelial tissue comprised of a single layer of epithelial cells that are in... Read More

Pseudostratified epithelium

Definition noun, plural: pseudostratified epithelia An epithelial tissue comprised of a single layer of epithelial cells... Read More

Circulation

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

Synovial membrane

Definition noun, plural: synovial joints The connective tissue lining the inner surface of the joint capsule of a synovial... Read More

Digestion and Absorption of Food

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

Pseudostratified columnar epithelium

Definition noun, plural: pseudostratified columnar epithelia A special type of columnar epithelium composed of a single... Read More

Columnar epithelium

Definition noun, plural: columnar epithelia An epithelial tissue comprised of columnar epithelial cells, with or without... 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

Organism

An organism refers to a living thing that has an organized structure, can react to stimuli, reproduce, grow, adapt, and... Read More

Hydrophilic

Hydrophilic Definition What does a hydrophile (or hydrophilic molecule) mean? If a molecule is “water-loving”, it is... Read More

Squamous epithelium

Definition noun, plural: squamous epithelia An epithelial tissue comprised of squamous cells, as seen in epidermis,... Read More

Stratum spinosum

Definition noun The thin layer of the epidermis between stratum basale and stratum granulosum, and comprised of... Read More