Human Body System Flashcards
alveoli
specialized lung cells that contain the air and support its movement
antibodies
specialized protein cells produced by the immune system to protect the body against invasion or antigen
antigens
a foreign substance invading the human body and initiating an immune system response
autonomic
a function of the nervous system that controls involuntary actions within the body such as regulation of organ activity such as digestion and waste processing
bone marrow
the soft, gelatinous tissue that produces of red and white blood cells
enzyme
complex proteins that serve as catalysts and determine the rate at which chemical reactions unfold in living things
erythrocytes
moving between the lungs and body tissues erythrocytes are oxygen carrying red blood cells
gas exchange
the process of getting oxygen into the cardiovascular system and removing carbon dioxide and water from it
hormone
a regulatory chemical substance created by the body, transported by the bloodstream to locations where it signals internal regulation
inflammatory response
a function of the immune system that allows a body to fight any pathogens with proteins and phagocytic white blood cells
nephrons
the functional filtering unit of the kidney
organ
a distinct structure made of cells and tissues responsible for functions in support of body activity and survival
organ system
the interdependent system of organs providing necessary activities in support of the entire body’s functioning
pH
a quantitative measure of alkalinity or acidity of a liquid solution The measure is reflected using a scale where the number 7 represents neutral and higher numbers increasing values of alkalinity Numbers lower than 7 reflect increasing acidity
phagocytic
part of the body’s defense system this white blood cell consumes or engulfs invasions by foreign matter or debris
