Frog Dissection Flashcards Preview

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Flashcards in Frog Dissection Deck (54):
1

Mouth

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

2

Maxilla

The upper jaw bone

3

Mandible

The lower jaw bone

4

External nares (nostrils)

Two small openings on dorsal surface of head near tip

5

Eyes

Protrude from head posterior to external nares

6

Nictitating membrane

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

7

Tympanum

Eardrum round membranes posterior and ventral to eyes

8

Trunk

Posterior end of frog extending from head to hind limbs

9

Cloacal opening

Hole at posterior end of frog

10

Appendages

Limbs that extend from trunk including forelimbs and hind limbs

11

Forelimbs

Short extensions from anterior end of trunk

12

Arm

Uppermost section of forelimb extending from shoulder to elbow

13

Forearm

Middle section of forelimb extending outward from wrist

14

Hind limbs

Long extensions from posterior end of trunk

15

Thigh

Uppermost section of hindlimb extending from hips to knee

16

Shank

Middle section of hindlimb extending from knee to ankle

17

Foot

Lowermost section of hindlimb extending outward from ankle

18

Digits

Fingers and toes
Four finger digits and five toe digits

19

Skin

Outer covering of head trunk and appendages
Smooth and moist

20

Epidermis

Outer layer of skin containing pigment granules for coloration

21

Dermis

Layer under epidermis containing chromatophores (example: pigment cells)

22

Maxillary teeth

Row of teeth found on margin of maxilla

23

Vomerine teeth

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

24

Internal nares

Nostril openings on roof of mouth in center of anterior area

25

Eye sockets

On roof of mouth where eyes bulge inward

26

Eustachian tubes

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

27

Esophagus

At back of mouth
Leads down throat to stomach

28

Glottis

Opening for trachea
Anterior to opening of esophagus on floor of mouth

29

Tongue

Found on floor of mouth
Hinged at anterior end

30

Buccal cavity

Inside cavity of the mouth

31

Dissection of hindlimbs

Remove skin from one of hindlimbs
Remove thigh muscles from femur and calf muscles from the tibiofibula

32

Thigh muscles

Muscles of thigh

33

Calf muscles

Muscles of shank

34

Femur

Bone running through thigh

35

Tibiofibula

Bone running through shank

36

Achilles' tendon

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

37

Head

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

38

Dissection of coelom

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

Teasing needle

Used to pull away or shred

40

Dissecting needle

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

41

Forceps

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

42

Heart (Atria and ventricle)

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

43

Liver

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

44

Gallbladder

Under liver and attached to it
Small round sac
Produces bile

45

Esophagus

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

46

Stomach

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

47

Small intestine

Extends from stomach to large intestine
Smaller diameter than large intestine but longer

48

Large intestine

Extends from small intestine to cloaca

49

Cloaca

Very end of digestive tract
Cut as low down as you can

50

Mesentery

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

51

Spleen

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

52

Lungs

To right and left of heat underneath liver
Spongy sacs

53

Kidneys

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

54

Fat bodies/ ovaries/ testes

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