LAT (LABORATORY ANIMAL TECHNICIAN) CERTIFICATION EXAM 2023-2024 ACTUAL EXAM 200
QUESTIONS AND CORRECT DETAILED ANSWERS
Abduction - (answer) The movement of a bone away from the mid-line of the body or
away from the axis of an extremity.
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.
,LAT (LABORATORY ANIMAL TECHNICIAN) CERTIFICATION EXAM 2023-2024 ACTUAL EXAM 200
QUESTIONS AND CORRECT DETAILED ANSWERS
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.
, LAT (LABORATORY ANIMAL TECHNICIAN) CERTIFICATION EXAM 2023-2024 ACTUAL EXAM 200
QUESTIONS AND CORRECT DETAILED ANSWERS
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.
Allele - (answer) One member of a pair of genes that occupies a specific site on a given chromosome.
Alternate form of a gene
Allergen - (answer) A substance that is recognized as foreign by the immune system and that causes an
allergic reaction
Allergy - (answer) Hypersensitivity to certain substances. such as pollens, foods, or microorganisms.
Alopecia - (answer) Hairloss, usually associated with a skin disease, fighting, parasites, or barbering.
AItricial - (answer) developmental state in which animals are horn blind, hairless, and helpless. Most
rodents are altricial at birth
Alveolus (plural, alveoli) - (answer) A microscopic air sac in the lungs where the exchange of
respiratory gases occurs through a network of finely divided blood capillaries
Ambulation - (answer) The physical act of walking
QUESTIONS AND CORRECT DETAILED ANSWERS
Abduction - (answer) The movement of a bone away from the mid-line of the body or
away from the axis of an extremity.
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.
,LAT (LABORATORY ANIMAL TECHNICIAN) CERTIFICATION EXAM 2023-2024 ACTUAL EXAM 200
QUESTIONS AND CORRECT DETAILED ANSWERS
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.
, LAT (LABORATORY ANIMAL TECHNICIAN) CERTIFICATION EXAM 2023-2024 ACTUAL EXAM 200
QUESTIONS AND CORRECT DETAILED ANSWERS
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.
Allele - (answer) One member of a pair of genes that occupies a specific site on a given chromosome.
Alternate form of a gene
Allergen - (answer) A substance that is recognized as foreign by the immune system and that causes an
allergic reaction
Allergy - (answer) Hypersensitivity to certain substances. such as pollens, foods, or microorganisms.
Alopecia - (answer) Hairloss, usually associated with a skin disease, fighting, parasites, or barbering.
AItricial - (answer) developmental state in which animals are horn blind, hairless, and helpless. Most
rodents are altricial at birth
Alveolus (plural, alveoli) - (answer) A microscopic air sac in the lungs where the exchange of
respiratory gases occurs through a network of finely divided blood capillaries
Ambulation - (answer) The physical act of walking
