* Chapter 23 Flashcards Preview

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Flashcards in * Chapter 23 Deck (71)
1

adjustment of an animal to a new environment

acclimatization

2

animal with a white coat and pink eyes; devoid of melanin

albino

3

surrounding

ambient

4

are between the anus and genitalia; females have a shorter anogenital distance than males, which is used to determine the sex of animals

anogenital distance

5

germ-free

axenic

6

behavioral disorder in which dominant animals bite or chew the fur of subordinate animals

barbering

7

substance that is dangerous to life

biohazard

8

devouring one's own species

cannibalism

9

space in oral cavity of hamsters that carries food and bedding

cheek pouch

10

standard normal against which experimental results are compared

control, also called experimental control

11

becoming active at twilight or before sunrise

crepuscular

12

mass of accumulated info or results of an experiment

data

13

cleaning method in which chinchillas roll in dust

dusting

14

discharge

emission

15

to reduce body temperature, heart and respiration rates, and metabolism to dormancy in summer

estivate

16

removal of blood or blood loss from the body

exsanguination

17

inanimate carrier of disease

fomite

18

shedding of hair patches from rough handling of chinchillas

fur-slip

19

genetic makeup of an individual for a particular trait

genotype

20

said of germ-free animals that have been introduced to one or two known nonpathogenic microorganisms

gnotobiotic

21

having two different genes for a given genetic trait, usually one gene is dominant over the other

heterozygous

22

to reduce body temperature, heart, and respiration rates and metabolism to dormancy in winter

hibernate

23

having a common origin but different functions in different species

homologous

24

having two identical genes for a given genetic trait

homozygous

25

strain resulting from mating two inbred strains

hybrid

26

statement of research supposition

hypothesis

27

type of rodent that includes guinea pigs, chinchillas, and porcupines

hystricomorph

28

resulting from at least 20 brother-sister or parent-offspring matings

inbred

29

at the normal site

in situ

30

outside living organisms; in test tubes or other laboratory glassware

in vitro

31

inside living organisms

in vivo

32

surroundings ABOVE the cellular level

macroenvironment

33

surroundings AT the cellular level

microenvironment

34

pairing with one mate

monogamous

35

of mice and rats

murine

36

from unrelated parents

outbred, also called random bred

37

physical characteristics of an individual

phenotype

38

destroying the brain and spinal cord by thrusting a blunt needle into the cranium or vertebral column

pithing

39

adapted for grasping and seizing

prehensile

40

to reproduce

propagate

41

written procedure for carrying out experiments

protocol

42

metal device that supports caging units

rack

43

class of animal that has chisel-shaped incisor teeth

rodent

44

incompletely developed

rudimentary

45

common term for vitamin C deficiency

scurvy

46

physical or behavioral differences between females and males of a given species

sexual dimorphism

47

study of embryo development

teratology

48

collection of animals used for experimental manipulation

test group

49

refers to removing or synthesizing specific genes from one strain and injecting them into the cells of another strain

transgenic

50

something that carries disease from one animal to another

vector

51

disease transfer from mother to fetus

vertical transmission

52

said of a structure that has lost a function it previously had

vestigial

53

rabbit nocturnal feces that is looser than normal and contains vitamins and nutrients that the rabbit consumes

night stool

54

transparent layer that permanently covers the eyes of snakes

brille (snakes cannot close their eyes and have brille instead of eyelids)

55

dorsal and ventral regions of a turtle shell

carapace (dorsal)
plastron (ventral)

56

secretory organs located on the throats of turtles

chin glands, also called mental glands

57

difficult or abnormal shedding

dysecdysis

58

shedding or molting

ecdysis

59

sexually dimorphic glands prominent in mature lizards that are located on the ventral surface of lizard thighs

femoral pores, also called femoral glands

60

small secretory organ located on the head of snakes

head gland

61

four secretory organs that open lateroventrally near the carapace edge of turtles

musk glands

62

saclike secretory organ located at the base of the tail in snakes

scent gland

63

any scalelike structure such as those found on tortoise or turtle shells or on the heads of snakes

scute

64

transparent, highly vascular, unshed, abnormal covering over the cornea of some reptiles

spectacle, also called eyecap or brille

65

lizard's ability to lose its tail

tail autotomy

66

long caudal vertebra of some amphibians

urostyle

67

Rodentia

Rodents

68

Muridae

Gerbils, Hamsters

69

Murinae

Subfamily of muridae, consisting of rats & mice

70

Caviidae

Guinea pigs

71

Chinchillidae

Chinchillas