Health and Disease - Vet Science

Disease is a condition in which the animal...

• shows physiological, anatomical or chemical changes that are outside the normal range for that species

• has bacterial cells inside the body

• is exposed to a pathogen

• will die unless it gets medical attention

An infectious disease is one that...

• is transmitted by another animal of the same species

• is caused by a pathogen that gains entrance into the body

• is caused by environmental factors or has a genetic basis

• causes symptoms in the host

A noninfectious disease is one that...

• Is transmitted by another animal of the same species

• Caused by a pathogen that gains entrance into the body

• Is caused by environmental factors or has a genetic abnormality

• Causes symptoms in the host

A pathogen is...

• The organism affected by the disease

• The organism that causes a disease

• The organism that transmits the disease

• The physical conditions in which the disease occurs

A host is...

• The organism affected by the disease

• The organism that causes the disease

• The organism that transmits the disease

• The physical conditions in which the disease occurs

A vector is...

• The organism affected by the disease

• The organism that causes a disease

• The organism that transmits the disease

• The physical conditions in which the disease occurs

What is virulence?

• The kind of pathogen that causes the disease

• The kind of host that gets the disease

• The ability of the pathogen to overcome the host's defenses

• The vaccination needed to fight a disease

The environment is...

• The organism affected by the disease

• The organism that causes the disease

• The organism that transmits the disease

• The physical conditions in which the disease occurs

If a disease is contagious, this means that it...

• Is caused by a pathogen that gains entrance into the body

• Is caused by environmental factors or has a genetic basis

• Is incurable

• Can be transmitted from one individual to another

Which of the following is false?

• Most species have a protective defense against microbes that includes skin, hair, feather, mucus, etc...

• Most pathogens will cause a disease regardless of the kind of tissue in which they gain entrance

• Virulence is the measure of how effectively a pathogen can overcome the host's defenses

• If a pathogen is not present in an environment, a disease cannot occur