92 results found

Search Results for: axis

Sagittal axis

Definition noun (anatomy) (1) An anatomical axis or imaginary line that lies perpendicular to the sagittal plane. (2) The... 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

Pelvic axis

pelvic axis A hypothetical curved line joining the centre point of each of the four planes of the pelvis, marking the centre... Read More

Frontal axis

Definition noun (anatomy) (1) An anatomical axis or imaginary line that lies perpendicular to the frontal plane. (2) The... 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

Axis

Axis (Science: botany) a stem, commonly used for the main stem of a whole plant or of an... Read More

Longitudinal section

Longitudinal Section Definition To describe the direction of movements and location of different body structures, a... 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

Codon

What does codon mean? A codon, in biology, is the basic genetic unit of life that acts as the template for the amino acid... Read More

Symmetry

Definition noun, plural: symmetries Correspondence of parts (in terms of form, size, distribution, or arrangement) on... Read More

Radial symmetry

Definition noun A form of symmetry in which the body plan is divisible into identical parts around a central... Read More

Embryo

An embryo refers to the early developmental stage of a multicellular organism that follows fertilization. This stage... Read More

Photosynthesis

Photosynthesis is a physio-chemical process carried out by photo-auto-lithotrophs by converting light energy into chemical... Read More

Abscissa

Abscissa (Science: geometry) One of the elements of reference by which a point, as of a curve, is referred to a system of... Read More

Revolution

revolution 1. The act of revolving, or turning round on an axis or a center; the motion of a body round a fixed point or... Read More

Intercalary meristem

The basic structural framework of plants is composed of different types of tissues. Based upon the capacity to divide, the... Read More

Valgus

Valgus Definition Valgus means "outwardly turned bone". ‘Valgus’ refers to anatomical bone deformity wherein a part of... 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

Chordata

Chordata Definition What is Chordata? Chordata is the phylum of the animal kingdom that includes a large number of animal... Read More

Gyration

Gyration 1. The act of turning or whirling, as around a fixed center; a circular or spiral motion; motion about an axis;... Read More

Bilateral symmetry

Definition noun, plural: bilateral symmetries A form of symmetry in which the opposite sides along a midline is a duplicate... Read More

Vortex

vortex Origin: L. Vortex, vertex, -icis, fr. Vortere, vertere, to turn. See Vertex. 1. A mass of fluid, especially of a... Read More

Angiosperm

Angiosperms Definition What is an angiosperm? An angiosperm is a plant that produces flowers. The angiosperms, also... Read More

First-order kinetics

What is a First-Order Kinetics (First-Order Reaction)? First-order kinetics refers to a reaction wherein the overall rate... Read More

Capsid

Capsid Definition A capsid is a three-dimensional proteinaceous capsular shell around a virus that encloses the viral... Read More

Conjugate

Conjugate Definition Conjugate in a broader sense refers to related pairs of substances or entities that are interconnected... Read More

Asymmetry

Definition noun The lack or absence of symmetry Supplement In biology, the body plan of many organisms exhibit symmetry.... Read More

Poles

Pole 1. A long, slender piece of wood; a tall, slender piece of timber; the stem of a small tree whose branches have been... Read More

Embryology

Embryology Definition Embryology is a branch of biology that deals with the topics concerning gamete formation... Read More

Eadie-hofstee plot

Eadie-hofstee plot (Science: biochemistry) a graphical representation of enzyme kinetic data in which the velocity of the... Read More

Mutualistic symbiosis

Mutualistic Symbiosis Definition In order to understand what a mutualistic symbiotic relationship means, we will break down... Read More

Binary fission

Binary Fission Definition What is binary fission? In biology, binary fission is a type of asexual reproduction where a... Read More

H and d curve

Definition noun A graph in which the density of the photographic film (vertical axis) is plotted against the logarithm of... Read More

Pivot

pivot 1. A fixed pin or short axis, on the end of which a wheel or other body turns. 2. The end of a shaft or arbor which... Read More

Spin

spin 1. To practice spinning; to work at drawing and twisting threads; to make yarn or thread from fibre; as, the woman... Read More

Pleiotropy

Pleiotropy Definition When one single gene starts affecting multiple traits of living organisms, this phenomenon is known... Read More

Morphology

Morphology Definition Morphology means the study of the shape and structure of living things from a biological perspective.... Read More

Eccentric

Eccentric 1. Deviating or departing from the center, or from the line of a circle; as, an eccentric or elliptical orbit;... Read More

Hormone Production

Reviewed by: Mary Anne Clark, Ph.D. Hormones are chemical messengers produced by glands in the endocrine system.... Read More

Peristalsis

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