Life Sciences Glossary: From Impulse and Infra-Red to Intrinsic and Introns

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Impulse

Is the change of momentum produced in a body and is equal to the product of force and time?

Infra- Red

The invisible radiations lying beyond the red part of the spectrum are called infra-red.

Isomers

Atomic species with the same atomic weight and the same atomic number but possessing different radioactive properties are termed isomers.

Isotopes

Atoms of different elements having same atomic number but different atomic weight.

Ideogram

A diagrammatic representation of chromosome morphology used for comparison of the karyotypes.

Ileum

The distal portion of the small intestine.

Iridium

One of the bones of the pelvic girdle.

Immunization

The process by which resistance to an infectious disease is induced.

Immunoglobulins

Prating antibodies.

Implant

Material inserted or grafted into an organ or structure of the body like blood vessel graft, cardiac, pacemaker, etc.

Inbreeding

Mating between related individuals.

Incontinence

The inability to control urination or defecation.

Incus

The ear possible that is located between the malleus and the stapes.

Infant

A child up to 12 months of age.

Inflammation

The protective response of a tissue characterized by increased blood flow and entry of leucocytes into the tissues, resulting in swelling, redness, redness, elevated temperature and pain.

Influenza

A highly contagious infection of the respiratory tract caused by a myxovirus.

Infundibulum

Stalk of neurohypophysis linking pituitary to the hypothalamus.

Ingestion

The act of taking the food into the body.

Inhibitor

Any substance or object that retards a chemical reaction.

Initiation Codon

The triplet of nucleotides (AUG) that code for methionine, the first amino acid in protein sequence.

Insecticide

A chemical agent that kills insects.

Insectivore

An animal that feds primarily on insects.

In Situ

From the Latin, meaning โ€œin the natural placeโ€ .

Insomnia

Inability to sleep or to remain asleep throughout the night.

Insulin

A hormone that decreases the blood sugar level.

Intercostal

Pertaining to the space between ribs.

Interference

Crossing over at one point that reduces the chance of another crossover nearby.

Interferons

Antiviral substances secreted by various leucocytes, fibroblasts and T-lymphocytes in response to viral infection.

Interleukin-1

A cytokine produced by macrophages that stimulates T helper lymphocytes.

Interleukin-2

A lymphocyte produced by T- helper lymphocytes that leads to proliferation of T helper cells and other T lymphocytes.

Interphase

The period of the cell cycle between mitoses that includes G1, S1 and S2 phases.

Interstitial

Situated in spaces between structures such as cells or organs.

Intima

The innermost layer of a structure such as the lining membrane of an artery, vein, lymphatic, etc.

Intracellular

Within a cell.

Intrinsic

Originating from or situated within an organ or tissue or inherent nature.

Introns

A non- coding sequence that interrupts exons in a gene.

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