5 Easy Facts About human anatomy organs Described

atrioventricular valves – just one-way valves Positioned involving the atria and ventricles; the valve on the appropriate is called the tricuspid valve, as well as one particular around the still left would be the mitral or bicuspid valve.

basal lamina – slender extracellular layer that lies underneath epithelial cells and separates them from other tissues.

bronchial bud – construction while in the building embryo that kinds once the laryngotracheal bud extends and branches to type two bulbous structures.

anticodon – consecutive sequence of three nucleotides on a tRNA molecule that is complementary to a particular codon on an mRNA molecule.

diastolic pressure – lower amount recorded when measuring arterial hypertension; represents the nominal worth comparable to the force that remains throughout ventricular relaxation.

contralateral – term meaning “on the other aspect,” as in axons that cross the midline in a very fibre tract.

depolarise – to decrease the voltage difference between the inside and out of doors of the cell’s plasma membrane (the sarcolemma for your muscle mass fibre), making The within significantly less check here damaging than at relaxation.

aponeurosis – broad, tendon-like sheet of connective tissue that attaches a skeletal muscle to another skeletal muscle mass or to the bone.

Cells, for example, Use a cell membrane (also called the plasma membrane) that keeps the intracellular environment—the fluids and organelles—separate from your extracellular setting. Blood vessels hold blood within a closed circulatory program, and nerves and muscles are wrapped in connective tissue sheaths that individual them from encompassing buildings.

acrosomal reaction – launch of digestive enzymes by sperm that allows them to burrow throughout the corona radiata and penetrate the zona pellucida of the oocyte previous to fertilisation.

activation gate – part of the voltage-gated Na+ channel that opens when the membrane voltage reaches threshold.

artery – blood vessel that conducts blood far from the heart; could be a conducting or distributing vessel.

alkaloid – substance, usually from the plant resource, that is certainly chemically simple with regard website to pH and can promote bitter receptors.

alveolar technique of the maxilla – curved, inferior margin on the maxilla that supports and anchors the higher tooth.