HOSA Veterinary Science Exam
2025 Questions and Answers
Abscess - ✔✔An accumulation of fluid (pus) in a dead space between tissues
containing bacteria, white blood cells, and dead tissue.
Active immunity - ✔✔Disease resistance resulting from exposure of an animal to a
pathogen either through disease contraction or vaccination.
Active transport - ✔✔Process that allows the pumping of a substance into an area of
higher concentration.
Acute - ✔✔Sudden onset
Addison's disease - ✔✔Disease condition characterized by low levels of cortisol along
with lethargy, weakness, weight loss, poor appetite, vomiting, and diarrhea. (Also
known as hypoadrenocorticism)
Adipose tissue - ✔✔Fat
Alopecia - ✔✔Baldness
Anabolism - ✔✔Cellular reactions that combine smaller molecules into larger ones.
Anaphylaxis - ✔✔Generalized life-threatening allergic reaction.
Anemia - ✔✔Low in red blood cells.
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, Anesthetize - ✔✔To sedate animals so they lack sensitivity or awareness.
Anestrus - ✔✔Period when animal is not cycling through estrus.
Anthrax - ✔✔A bacterial infection with skin, intestinal, and respiratory problems.
Antibiotics - ✔✔Drugs that fight bacterial infections.
Antibodies - ✔✔Infection-fighting proteins.
Antigen - ✔✔Any foreign material that is capable of stimulating an immune response.
Antimicrobial - ✔✔Agent that hinders the growth of or kills micro organisms.
Antioxidant - ✔✔Oxidation-inhibiting substance.
Antiseptics - ✔✔Germicides that can be used on the skin of animals.
Appendicular skeleton - ✔✔Skeletal portion consisting of limb bones.
Arrythmia - ✔✔Any change in rate, rhythm, or conduction within the heart.
Arteries - ✔✔Vessels that transport blood away from the heart.
Arthritis - ✔✔Disease condition in which the smooth lining of cartilage becomes rough
and irregular.
Aseptic technique - ✔✔General practices used to minimize the risk of infection that may
occur following surgery.
Ataxia - ✔✔Uncoordinated muscle movement
Atopy - ✔✔Sensitization to foreign antigens
Atrophy - ✔✔Shrink
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
2025 Questions and Answers
Abscess - ✔✔An accumulation of fluid (pus) in a dead space between tissues
containing bacteria, white blood cells, and dead tissue.
Active immunity - ✔✔Disease resistance resulting from exposure of an animal to a
pathogen either through disease contraction or vaccination.
Active transport - ✔✔Process that allows the pumping of a substance into an area of
higher concentration.
Acute - ✔✔Sudden onset
Addison's disease - ✔✔Disease condition characterized by low levels of cortisol along
with lethargy, weakness, weight loss, poor appetite, vomiting, and diarrhea. (Also
known as hypoadrenocorticism)
Adipose tissue - ✔✔Fat
Alopecia - ✔✔Baldness
Anabolism - ✔✔Cellular reactions that combine smaller molecules into larger ones.
Anaphylaxis - ✔✔Generalized life-threatening allergic reaction.
Anemia - ✔✔Low in red blood cells.
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
, Anesthetize - ✔✔To sedate animals so they lack sensitivity or awareness.
Anestrus - ✔✔Period when animal is not cycling through estrus.
Anthrax - ✔✔A bacterial infection with skin, intestinal, and respiratory problems.
Antibiotics - ✔✔Drugs that fight bacterial infections.
Antibodies - ✔✔Infection-fighting proteins.
Antigen - ✔✔Any foreign material that is capable of stimulating an immune response.
Antimicrobial - ✔✔Agent that hinders the growth of or kills micro organisms.
Antioxidant - ✔✔Oxidation-inhibiting substance.
Antiseptics - ✔✔Germicides that can be used on the skin of animals.
Appendicular skeleton - ✔✔Skeletal portion consisting of limb bones.
Arrythmia - ✔✔Any change in rate, rhythm, or conduction within the heart.
Arteries - ✔✔Vessels that transport blood away from the heart.
Arthritis - ✔✔Disease condition in which the smooth lining of cartilage becomes rough
and irregular.
Aseptic technique - ✔✔General practices used to minimize the risk of infection that may
occur following surgery.
Ataxia - ✔✔Uncoordinated muscle movement
Atopy - ✔✔Sensitization to foreign antigens
Atrophy - ✔✔Shrink
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
