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Bio > Frog Dissection > Flashcards

Frog Dissection Flashcards

1
Q

Mouth

A

Large opening at anterior end of head made up of a maxilla and mandible

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2
Q

Maxilla

A

The upper jaw bone

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3
Q

Mandible

A

The lower jaw bone

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4
Q

External nares (nostrils)

A

Two small openings on dorsal surface of head near tip

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5
Q

Eyes

A

Protrude from head posterior to external nares

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6
Q

Nictitating membrane

A

Extension of Lower eyelid that can come up to protect the eye

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7
Q

Tympanum

A

Eardrum round membranes posterior and ventral to eyes

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8
Q

Trunk

A

Posterior end of frog extending from head to hind limbs

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9
Q

Cloacal opening

A

Hole at posterior end of frog

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10
Q

Appendages

A

Limbs that extend from trunk including forelimbs and hind limbs

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11
Q

Forelimbs

A

Short extensions from anterior end of trunk

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12
Q

Arm

A

Uppermost section of forelimb extending from shoulder to elbow

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13
Q

Forearm

A

Middle section of forelimb extending outward from wrist

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14
Q

Hind limbs

A

Long extensions from posterior end of trunk

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15
Q

Thigh

A

Uppermost section of hindlimb extending from hips to knee

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16
Q

Shank

A

Middle section of hindlimb extending from knee to ankle

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17
Q

Foot

A

Lowermost section of hindlimb extending outward from ankle

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18
Q

Digits

A

Fingers and toes

Four finger digits and five toe digits

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19
Q

Skin

A

Outer covering of head trunk and appendages

Smooth and moist

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20
Q

Epidermis

A

Outer layer of skin containing pigment granules for coloration

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21
Q

Dermis

A

Layer under epidermis containing chromatophores (example: pigment cells)

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22
Q

Maxillary teeth

A

Row of teeth found on margin of maxilla

23
Q

Vomerine teeth

A

Two small patches of teeth found on roof of mouth in center of anterior area

24
Q

Internal nares

A

Nostril openings on roof of mouth in center of anterior area

25
Q

Eye sockets

A

On roof of mouth where eyes bulge inward

26
Q

Eustachian tubes

A

Openings for tunes are found ok each side of roof of mouth near hinge of jaws

27
Q

Esophagus

A

At back of mouth

Leads down throat to stomach

28
Q

Glottis

A

Opening for trachea

Anterior to opening of esophagus on floor of mouth

29
Q

Tongue

A

Found on floor of mouth

Hinged at anterior end

30
Q

Buccal cavity

A

Inside cavity of the mouth

31
Q

Dissection of hindlimbs

A

Remove skin from one of hindlimbs

Remove thigh muscles from femur and calf muscles from the tibiofibula

32
Q

Thigh muscles

A

Muscles of thigh

33
Q

Calf muscles

A

Muscles of shank

34
Q

Femur

A

Bone running through thigh

35
Q

Tibiofibula

A

Bone running through shank

36
Q

Achilles’ tendon

A

Tendon that connects calf muscles to foot (white in color)

37
Q

Head

A

The anterior end of the frog extending to and including the eardrums

38
Q

Dissection of coelom

A

Place frog on back
Using forceps, lift skin of lower abdomen and make a cut with the scissors
Insert scissors into slit and make cut from near cloacal opening to below the Lower jaw
Make shallow cuts to sides posterior to forelimbs and anterior to hindlimbs
Make similar cuts through body wall if previous cuts did not do so
Cut off flaps to reveal organs inside coelom
Remove organs on tray for identification

39
Q

Teasing needle

A

Used to pull away or shred

40
Q

Dissecting needle

A

Coverslips of dissection
Thrown away after dissection
Used to pin down a critter

41
Q

Forceps

A

Tweeter looking item
Used to remove things from organism
Used to tease back membranes

42
Q

Heart (Atria and ventricle)

A

In center at anterior end between forelimbs
Atria-red brown
Ventricle- white

43
Q

Liver

A

On both sides of heart
Contains three lobes(sections)
Largest organ
Brownish or greenish

44
Q

Gallbladder

A

Under liver and attached to it
Small round sac
Produces bile

45
Q

Esophagus

A

Attached to back of throat and stomach
Cut as high up as you can
Do not separate from stomach
White

46
Q

Stomach

A

Widest part of digestive tract
Very muscular white
(Cut open stomach)

47
Q

Small intestine

A

Extends from stomach to large intestine

Smaller diameter than large intestine but longer

48
Q

Large intestine

A

Extends from small intestine to cloaca

49
Q

Cloaca

A

Very end of digestive tract

Cut as low down as you can

50
Q

Mesentery

A

Connective tissue holding different area of small intestine together
Very thin but strong

51
Q

Spleen

A

Round body similar in size to the heart
Found in Mesentery
Makes red blood cells
Dark reddish brown

52
Q

Lungs

A

To right and left of heat underneath liver

Spongy sacs

53
Q

Kidneys

A

Long flat structures along dorsal surface of coelom near posterior end of cavity

54
Q

Fat bodies/ ovaries/ testes

A

Yellow or brown wormlike structure in mid abdominal area (ovaries are too small to see and testes will be small, oval and white)

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