LAT LABORATORY ANIMAL CERTIFICATION
EXAM REVIEW 2026 COMPLETE QUESTIONS
AND VERIFIED SOLUTIONS WITH STUDY GUIDE
GRADED A+
◉ Abomasum. Answer: The fourth stomach compartment of a
ruminant animal; the only compartment that secretes digestive
enzymes and is thus a true stomach.
◉ Abscess. Answer: A localized collection of pus accompanied by
swelling in any part of the body.
◉ Accessory Sex Gland. Answer: A gland associated with the
urogenital tract;for example, the prostate and seminal vesicles in
males which provide the fluid needed for sperm transport during
ejaculation
◉ Acclimation period. Answer: The time given to a newly arrived
animal to become accuslomed to its new surroundings before the
research for which it is intended begins.
◉ Acetylcholine. Answer: A naturally occurring substance in the
body t hat is involved i n the transmission of nerve impulses.
,◉ Acid. Answer: Chemical or solution with a pH below 7.Chemicals
that have a very low pH can cause chemical burns to the skin and
should be handled cautiously.
◉ Acquired immunity. Answer: Immunity acquired through
exposure to an antigen,which results in the activation of immune
cells and the formation of antibodies to this antigen. Also called
active immunity.
◉ Activity cage. Answer: A specialized animal unit or cage that
allows an animal to exercise freely while its activity is being
recorded or measured
◉ Acute disease. Answer: A disease having rapid onset and short
duration.
◉ Acute toxicity test. Answer: A test in which the test animal
receives a single dose of a test substance.
◉ Adduction. Answer: The movement of a bone toward the midline
of the body or toward the axis of an extremity
◉ Ad libitum. Answer: Making feed or water availble to the animal at
all times
,◉ Adipose tissue. Answer: tissue made up of cells that store fatty
substances,such as lipids and fatty acids. Used as a source of energy
for the body. Also called fatty tissue
◉ Adjuvant. Answer: A substance that enhances the potency of
another substance. In immunology. it is a substance that enhances
the immune response to antigens
◉ Adrenaline. Answer: A hormone that is secreted by the adrenal
medulla into the blood stream in response to physical or mental
stress. such as that caused by fear or injury. Adrenaline causes a
rapid increase in blood pressure. metabolic rate, and blood glucose
concentration. Also called epinephrine.
◉ Adrenergic. Answer: A drug, or other subtance that has effects
similar to epinephrine.
◉ Adventitious. Answer: Accidental or acquired; not natural or
hereditary
◉ Aerosol. Answer: A suspension, fine mist. or spray which contains
minute particles. Examples of common aerosolized particles include
pollen. medications (as in inhalation therapy)or pathogens
, ◉ Agar. Answer: A polymer made up of subunits of the sugar
galactose that becomes gelatinous when dissolved in hot water and
cooled. Used as medium for culturing microorganisms
◉ Agonist. Answer: A drug capable of stimulating physiologic
activity
◉ Agouti. Answer: An animal color pattern in which the hairs are
dark brown with yellow bands close to the tips.giving the animal a
light brown appearance.
◉ Agranulocyte. Answer: A white blood cell that contains a
multilobed nucleus and has microscopic granules in its cytoplasm;
types include leukocytes and monocytes.
◉ Air exchange. Answer: The number of times per hour the
ventilation system replaces the air in the room.
◉ Albino. Answer: A inherited condition marked by the absence of
melanin, resulting in non pigmented skin. coat, and eyes. An albino
animal has white fur or feathers and pink eyes (irises).
◉ Alimentary canal. Answer: A long tube extending from the mouth
to the anus: includes organs such as the stomach and intestines. Also
called the gastrointestinal tract.
EXAM REVIEW 2026 COMPLETE QUESTIONS
AND VERIFIED SOLUTIONS WITH STUDY GUIDE
GRADED A+
◉ Abomasum. Answer: The fourth stomach compartment of a
ruminant animal; the only compartment that secretes digestive
enzymes and is thus a true stomach.
◉ Abscess. Answer: A localized collection of pus accompanied by
swelling in any part of the body.
◉ Accessory Sex Gland. Answer: A gland associated with the
urogenital tract;for example, the prostate and seminal vesicles in
males which provide the fluid needed for sperm transport during
ejaculation
◉ Acclimation period. Answer: The time given to a newly arrived
animal to become accuslomed to its new surroundings before the
research for which it is intended begins.
◉ Acetylcholine. Answer: A naturally occurring substance in the
body t hat is involved i n the transmission of nerve impulses.
,◉ Acid. Answer: Chemical or solution with a pH below 7.Chemicals
that have a very low pH can cause chemical burns to the skin and
should be handled cautiously.
◉ Acquired immunity. Answer: Immunity acquired through
exposure to an antigen,which results in the activation of immune
cells and the formation of antibodies to this antigen. Also called
active immunity.
◉ Activity cage. Answer: A specialized animal unit or cage that
allows an animal to exercise freely while its activity is being
recorded or measured
◉ Acute disease. Answer: A disease having rapid onset and short
duration.
◉ Acute toxicity test. Answer: A test in which the test animal
receives a single dose of a test substance.
◉ Adduction. Answer: The movement of a bone toward the midline
of the body or toward the axis of an extremity
◉ Ad libitum. Answer: Making feed or water availble to the animal at
all times
,◉ Adipose tissue. Answer: tissue made up of cells that store fatty
substances,such as lipids and fatty acids. Used as a source of energy
for the body. Also called fatty tissue
◉ Adjuvant. Answer: A substance that enhances the potency of
another substance. In immunology. it is a substance that enhances
the immune response to antigens
◉ Adrenaline. Answer: A hormone that is secreted by the adrenal
medulla into the blood stream in response to physical or mental
stress. such as that caused by fear or injury. Adrenaline causes a
rapid increase in blood pressure. metabolic rate, and blood glucose
concentration. Also called epinephrine.
◉ Adrenergic. Answer: A drug, or other subtance that has effects
similar to epinephrine.
◉ Adventitious. Answer: Accidental or acquired; not natural or
hereditary
◉ Aerosol. Answer: A suspension, fine mist. or spray which contains
minute particles. Examples of common aerosolized particles include
pollen. medications (as in inhalation therapy)or pathogens
, ◉ Agar. Answer: A polymer made up of subunits of the sugar
galactose that becomes gelatinous when dissolved in hot water and
cooled. Used as medium for culturing microorganisms
◉ Agonist. Answer: A drug capable of stimulating physiologic
activity
◉ Agouti. Answer: An animal color pattern in which the hairs are
dark brown with yellow bands close to the tips.giving the animal a
light brown appearance.
◉ Agranulocyte. Answer: A white blood cell that contains a
multilobed nucleus and has microscopic granules in its cytoplasm;
types include leukocytes and monocytes.
◉ Air exchange. Answer: The number of times per hour the
ventilation system replaces the air in the room.
◉ Albino. Answer: A inherited condition marked by the absence of
melanin, resulting in non pigmented skin. coat, and eyes. An albino
animal has white fur or feathers and pink eyes (irises).
◉ Alimentary canal. Answer: A long tube extending from the mouth
to the anus: includes organs such as the stomach and intestines. Also
called the gastrointestinal tract.
