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Science 7: Unit 4 Living Systems Vocabulary

Across
the chemical processes that occur within a living organism in order to maintain life
each of the two upper cavities of the heart from which blood is passed to the ventricles
a toxin that induces an immune response in the body
a hollow part or cavity in an organ; i.e. heart & brain
firm, whitish, flexible connective tissue
poisonous
fine branching blood vessels
a widespread occurrence of an infectious disease in a community at a particular time
a bacterium, virus, or other microorganism that can cause disease
relating to glands that secrete hormones or other products directly into the blood
Down
resistant to a particular infection owing to the presence of specific antibodies or sensitized white blood cells.
tiny air sacs of the lungs which allow for rapid gaseous exchange
used by the immune system to neutralize pathogens such as pathogenic bacteria and viruses.
a flexible but inelastic cord attaching a muscle to a bone
connects the throat to the stomach
tough, flexible, connective tissue that connects two bones or cartilages or holds together a joint.
each of a pair of organs in the abdominal cavity of mammals, birds, and reptiles, excreting urine