I-J-K

iatrogenic  An adverse state or condition induced by treatment.

idiopathic  A disease of spontaneous origin with unknown cause.

immune  Highly resistant to infectious disease because of antibodies.

impulse  1.  Sudden pushing or rapid loading.  2. Suddenly applied force or rapid loading because of changes in momentum that occur over a short time interval.  3.  A change in momentum calculated by multiplying magnitude of force by time of application.

incontinent  Inability to prevent discharge of urine or feces.

incubation  The time period between exposure to infection and the appearance of the first signs or symptoms.

induration  Hardening of soft tissue caused by extravasation of fluids.

infection  Multiplication of pathogenic organisms in the body. 

inflammation  A localized protective response to tissue damage or irritation that is characterized by pain, swelling, redness, heat, and loss of function.

innocuous  Harmless or benign.

inoculation  The point at which infectious materials, HIV, or other microorganisms are introduced into the blood stream.

insidious  A disease that appears slowly and progresses with few or no symptoms indicating the illness.

inspection  Examination by the eye.

inverse-square law  The intensity of radiation varies inversely with the square of the distance from the source.

ipsilateral  Affecting same side or on same side of the body.

ischemia  Insufficient or decreased blood supply to a tissue or organ due to constriction, obstruction, or pressure (ischemic pressure).

isolytic contraction  A muscle lengthens involuntarily during contraction.

isometric contraction  Contraction of a muscle with no change in length.

isotonic contraction  Contraction of a muscle with a decrease in length.

itis-  A suffix that is often used to indicate inflammation.

joint mice  Bits of bone or cartilage that are present in joint space.

jump sign  A general, involuntary response caused by withdrawal from pain when pressure is applied to a trigger point.

keloid scar  A raised, red, smooth scar that is often painful.

kinetics  A study of forces acting on a system.

KS  Abbreviation for Kaposi's sarcoma.

kyphosis  Backward convexity, prominence, or hump on the spine caused by flexion.

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