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LBYBIO3 > Chapter 4 - External Anatomy And Adaptive Radiation In Gnathostomes > Flashcards

Chapter 4 - External Anatomy And Adaptive Radiation In Gnathostomes Flashcards

1
Q

Contains sensory cells that serve to detect water vibrations (dogfish)

A

Lateral-line system

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2
Q

Pointed extremity of the head of a dogfish

A

Rostrum

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3
Q

Canals that connect the ears to the surface if the head

A

Endolymphatic ducts

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4
Q

First gill slit

A

Spiracle

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5
Q

2 kinds of fins (dogfish)

A

Unpaired or median fins

Paired or lateral fins

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6
Q

What asymmetrical type is the caudal fin of elasmobranchs?

A

Heterocercal

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7
Q

Sperm-conducting groove which is used in mating by the dogfish

A

Clasper

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8
Q

Dermal fin rays of the dogfish

A

Ceratotrichia

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9
Q

What is the difference between the operculum of bony fishes and elasmobranchs?

A

Those of elasmobranchs lacks skeletal support

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10
Q

Covers the gill opening

A

Operculum

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11
Q

Shape of the caudal fin of bony fishes (osteichthyes)

A

Homocercal

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12
Q

Bony flexible jointed fin rays that support the fins of bony fishes

A

Lepidotrichia

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13
Q

Another name for garpike

A

Lepidosteus

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14
Q

Nostrils of amphibians

A

External nares

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15
Q

Do amphibians have a cloaca?

A

No

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16
Q

A fold of skin that passes transversely across the throat of amphibians

A

Gular fold

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17
Q

Differentiate frogs and toads

A

Frogs: long legs; smooth skin
Toads: short legs; rough thick skin

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18
Q

Projections of the skull bones covered with a thin horny shell

A

Head spines or horns

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19
Q

3rd eyelid

A

Nictitating membrane

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20
Q

3rd median eye

A

Pineal eye

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21
Q

Opening of sacs which secrete a yellowish waxy material of unknown purpose; found along the inner surface of the thighs of lizards

A

Femoral pores

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22
Q

Temperature-detectors of snakes

A

Pit

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23
Q

Connects the carpace and plastron

A

Lateral bridges

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24
Q

Differentiate a male and female turtle

A

Male carapace us more arched

Male claws are longer

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25
Q

Differentiate alligator and crocodile

A

Alligator: broad and blunt snout
Crocodile: narrow and pointed snout

26
Q

Tail of aves which is reduced to a stump

A

Uropygium

27
Q

Feathers that conceal the shape of birds

A

Contour feathers

28
Q

Large, stout feathers of the wings and tail

A

Flight feathers

29
Q

Small feathers which cover the bases of the wings and tail and the general surface of a bird’s body

A

Coverts

30
Q

Hairlike processes on birds; hair feathers

A

Filoplumes

31
Q

Deep pits into which contour feathers were set

A

Feather follicles

32
Q

A flap with a fringed posterior margin (Chondrichthyes)

A

Nasofrontal process

33
Q

Deep groove covered by the nasofrontal process (Chondricthyes)

A

Orosonal groove

34
Q

Large opening between pelvic fins (Chondrichthyes)

A

Anus or cloacal aperture

35
Q

Base of upper beak of aves

A

Cere

36
Q

Deep, narrow passage which leads to the middle ear (Aves)

A

External auditory meatus

37
Q

Fold + external auditory meatus

A

External ear

38
Q

Organs of flight

A

Wings

39
Q

Great flight feathers

A

Remiges

40
Q

Feathers of the hand

A

Primaries

41
Q

Feathers of the forearm

A

Secondaries

42
Q

Feathers of the upper arm

A

Tertiares or humerals

43
Q

Half-circle of large flight feathers on the tail stump

A

Rectrices

44
Q

Where the bird obtains oil for preening its feathers

A

Uropygial gland

45
Q

Closely set hairs clothing the body of mammals

A

Fur

46
Q

Long and stout hairs which have a rich nerve supply and serve as important tactile organs (Mammalia)

A

Whiskers or vibrissae

47
Q

Divisions of the head of a cat

A

Facial and cranial region

48
Q

Cleft in the center of the upper lip (mammalia)

A

Harelip

49
Q

Do cats have a nictitating membrane?

A

Yes

50
Q

Long and flexible external fold in the ear of cats

A

Pinna

51
Q

Pinna + external auditory meatus (mammalia)

A

External ear

52
Q

Openings of milk glands

A

Teats or nipples

53
Q

Also called as milk glands in mammals

A

Mammary glands

54
Q

Enumerate and describe the types of gaits. Gives example of an animal with that type of gait.

A

Digitigrade - walks on digits w/ remainder of hand and foot elevated (cat and rabbit)

Plantigrade - walks on whole sole of the foot (man)

Unguligrade - walk on their nails (horses and cattle)

55
Q

Region that includes the anal and urogenital openings

A

Perineum

56
Q

True or False? Majority of mammals gave a cloaca.

A

False

57
Q

True or False? The anal and urogenital openings of mammals are separate

A

True

58
Q

Greater lips/labia majora + urogenital opening (female mammals)

A

Vulva

59
Q

Organ of copulation in male mammals

A

Penis

60
Q

Double pouch of the body wall of male mammals which the testes are located

A

Scrotum or scrotal sac

61
Q

Head of the penis

A

Glans

62
Q

Also called the foreskin

A

Prepuce

LBYBIO3 (9 decks)

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