156 results found

Search Results for: contraction

Antagonistic Muscle

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

Idiomuscular contraction

Idiomuscular contraction --> myoedema a localised contraction of a degenerating muscle, occurring at the point of a sharp... Read More

Contraction

Contraction (Science: physiology) a shortening or reduction in size, in connection with muscles contraction implies... Read More

Muscle contraction

muscle contraction A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs... Read More

Anodal opening contraction

Anodal opening contraction An obsolete term for the momentary contraction of a muscle under the influence of the positive... Read More

Tonic contraction

tonic contraction Sustained contraction of a muscle, as employed in the maintenance of... Read More

Sarcolemma

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

Isotonic

Isotonic Definition What does isotonic mean? The term "isotonic" is used in physiology, anatomy, and physical chemistry.... Read More

Tonic contractions

tonic contraction Sustained contraction of a muscle, as employed in the maintenance of... Read More

Smooth muscle

The smooth muscle can be described as a type of muscle in the human body that is non-striated and involuntary in action.... 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

Homeostasis

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

Smooth endoplasmic reticulum

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

Abdominal reflex

Definition noun, plural: abdominal reflexes Abdominal wall muscle contraction of the umbilicus toward the abdominal quadrant... Read More

Cytoskeleton

Definition noun plural: cytoskeletons cy·to·skel·e·ton (cell biology) The lattice or internal framework of a cell... Read More

Prostaglandin

Definition noun, plural: prostaglandins A group of eicosanoids, structurally characterized as 20-carbon unsaturated fatty... 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

Prostaglandin F2-alpha

Definition noun, plural: prostaglandins F A biologically active prostaglandin that forms when the intermediate prostaglandin... Read More

Terminal web

Definition noun (cell biology) The subapical zone rich in microfilaments, and acts as the attachment point for the bundles... Read More

Peristalsis

The process of wave-like muscle contractions of the alimentary tract that moves food along.peristalsis (Science:... Read More

Microfilament

Definition noun plural: microfilaments mi·cro·fil·a·ments, mī'krō-fil'ă-mĕnts A thin, helical, single-stranded... Read More

Actin

Actin (Science: cell biology) a filamentous proteins (42 kD) involved in muscle contraction in both smooth and striated... Read More

Starlings law

Definition noun Starling’s law states that the force of contraction depends on the length of muscle fibers of the heart... Read More

Positive feedback

Definition noun (1) A feedback in which the system responds to the perturbation in the same direction as the... Read More

Sarcomere

Definition noun, plural: sarcomeres A segment consisting of a highly organized assembly of filaments delimited by two Z... Read More

Semilunar valve

The human heart structure consists of heart chambers (2 atria and 2 ventricles) that differ functionally from each other.... Read More

Tropomyosin

Definition noun A long protein strand composed of two fully alpha helical chains in a coiled-coil dimmer, and binds along... Read More

Twitch

twitch 1. The act of twitching; a pull with a jerk; a short, sudden, quick pull; as, a twitch by the sleeve. 2. A short,... Read More

Oxytocin

Definition noun, plural: oxytocins An antidiuretic peptide hormone (chemical formula: C46H66N12O12S2) produced chiefly by... Read More

Feedback mechanism

Definition noun A loop system in which the system responds to perturbation either in the same direction (positive feedback)... Read More

Stroke volume

stroke volume (Science: physiology) The amount of blood pumped out of one ventricle of the heart as the result of a single... Read More

Cell matrix

Definition noun plural: cell matrices cell ma·trix, ˈmeɪtɹɪks An insoluble, dynamic gel in the cytoplasm, believed... Read More

Reaction of degeneration

reaction of degeneration The electrical reaction in a degenerated nerve and the muscles supplied by it; characterised by... Read More

Accommodation reflex

Definition noun, plural: accommodation reflexes A reflex reaction of the eye in response to focusing on near object followed... Read More

Phosphorylation

Phosphorylation Definition We can define phosphorylation as a biochemical process in which a phosphate molecule is added to... Read More

Fibrillation

Fibrillation (Science: physiology) a small, local, involuntary contraction of muscle, invisible under the skin, resulting... Read More

Z disc

Definition noun, plural: Z discs The region or line formed in the sarcomere into which the thin filaments are... Read More