Chapter 2 - Definitions

cytology

the study of cells, including their origin, structure, functions and pathology

cell

basic unit of all living things capable of independent life and reproduction

cancer

a large group of diseases that have malignant properties (they grow
and spread) and divide at an abnormal or uncontrolled rate

metastasis

the ability of a cell to divide and invade surrounding tissues (cancer)

histology

field of study specializing in the study of tissues

adipose tissue

fat
a type of connective tissue that cushions, stores energy and
insulates against heat loss

involuntary muscle

smooth muscle (lining of the stomach), cardiac muscle
individual has little or no control over the muscles movement

voluntary muscle

skeletal or striated muscle
muscles are under the conscious control of the individual

organ

a body structure that works within a body system to perform a
specialized function

visceral

located within a body cavity

viscera
visceral organs

body's internal organs
not all organs are visceral, sweat glands, hair and skin are also
body organs but are not internal viscera

body system

several related organs that work together to perform a complex
function within the body