61 results found

Search Results for: extension

Primer extension

Definition noun A method that uses the enzyme Reverse Transcriptase (RNA-dependent DNA polymerase) to determine the... Read More

Extension

Extension 1. (Science: orthopaedics) The movement by which the two elements of any jointed part are drawn away from each... 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

Antagonistic Muscle

Definition of Antagonistic Muscle What does the term “antagonistic” mean? As the name suggests, the word antagonistic... Read More

Undulating membrane

Definition noun A sinuous extension of the cytoplasmic membrane performing a vigorous, wavelike, and reversible... Read More

Axon

What Is Axon? An axon is a thin, long fiber of a nerve cell (or neuron). It transmits electrical impulses from the cell... Read More

Choanomastigote

Definition noun, plural: choanomastigotes (protistology) The developmental stage or the morphological form in the lifecycle... Read More

Overview of Chirology

Psychodiagnostic Chirology (PDC) is a comprehensive diagnostic discipline applied by professional behavioral specialists in... Read More

Diarthrodial joint

What is a diarthrodial joint? A diarthrosis joint is a freely moving joint characterized by its mobility and joint cavity... Read More

Herring body

Definition noun, plural: Herring bodies The neurosecretory terminal of the axons from the hypothalamus and located in the... Read More

S1 nuclease mapping

Definition noun A laboratory method used to locate the 5'end of a transcript in a mixture of RNA using nuclease... Read More

Buck’s traction

Buck's Traction Definition Buck's traction for femur fracture is very helpful. It can be utilized in the treatment and... Read More

Nerve Fiber

A threadlike extension of a nerve... Read More

Trypomastigote

Definition noun, plural: trypomastigotes (protistology) The developmental stage or the morphological form in the lifecycle... Read More

Eponychium

The eponychium is the layer present underneath the proximal nail fold that produces cuticles on the nail.... Read More

Fibrocartilage

What Is Fibrocartilage? Fibrocartilage is the strongest transitional connective tissue made up of collagen fibers and... Read More

Epistasis

Epistasis Definition What is epistasis in genetics? How does epistasis occur? The epistasis definition, in biology, refers... Read More

Peristalsis

What is Peristalsis? Peristalsis is the series of involuntary, wave-like muscle movements in the cylindrical, hollow tube... Read More

Apical bud

Apical Bud Definition The apical bud is the type of bud located at the top (apex) of the plant, particularly at the very... Read More

Antecubital fossa

Antecubital Fossa Definition The antecubital fossa or the cubital fossa is the triangular-shaped hollow depression between... Read More

Inhibitory postsynaptic potential

Inhibitory Postsynaptic Potential Definition An inhibitory postsynaptic potential is a type of synaptic potential. It is... Read More

Postanal gut

Definition noun A postrectal extension of the embryonic hindgut to the cloacal membrane where the anal opening... Read More

Microvillus

Definition noun, plural: microvilli Any of the minute hairlike structures projecting from the exposed surface of the cell in... Read More

Nervous tissue

Nervous Tissue Definition Nerve cells (or neurons) and their associated cells, such as neuroglia cells, make up nervous... Read More

Agonist muscle

Definition noun A muscle that contracts while another muscle relaxes Supplement Muscles may be classified according to the... Read More

Sagittal plane

The sagittal plane is the plane that allows us to see the world in bilateral symmetry. Whether reaching for a high shelf,... Read More

Analogous structures

Analogous Structures Definition In evolutionary biology, analogous structures are biological structures having similar or... Read More

Trichome

Definition noun, plural: trichomes (botany) An outgrowth (hair-like or scale-like) from the epidermal cell (microbiology) A... Read More

Renal column

Definition noun, plural: renal columns A column-like extension of the renal cortex in the renal medulla Supplement A... Read More

Decerebrate rigidity

Definition noun An involuntary posturing whereby the arms are extended on the sides while the head is arched back, as... 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

Pituicyte

Definition noun, plural: pituicytes A specialized glial cell in the neurohypophysis that resembles an astrocyte and plays a... Read More

Rhinarium

Rhinarium Definition Rhinarium is the hairless (furless) skin area around the external openings of the nostrils in many... Read More

Procollagen peptidase

procollagen peptidase (Science: enzyme) The proteases that remove the terminal extension peptides of procollagen, deficiency... Read More

Signal peptide

Definition noun An extra-peptide extension found at the amino terminus of a nascent protein, and functions by prompting the... Read More

Biodiversity

Biodiversity Lead Author: J. Emmett DuffyThis article has been reviewed and approved by the following Topic Editor: John... Read More

Rostrum

Definition noun, plural: rostra (zoology) (1) A beak-like or snout-like projection, such as that of the crocodile or... Read More

Growth

Growth Definition What is growth in biology? Growth is the irreversible increase of an organism’s size over a given... Read More

Acid

Acid (Science: chemical, chemistry) a fundamental category of many compounds whose water-based solutions have a sour taste,... Read More

Leg

Leg 1. A limb or member of an animal used for supporting the body, and in running, climbing, and swimming; especially, that... Read More