Digital Frog Dissection

Frogdissection

Anne therese l. montañob5c56

1. externalfeatures

3. body cavity

index

2. head

4. Leg muscles

Digital Frog offers a dissection video

external features

These are the external structures of the frog: the head, forelegs, skin, groin, and hindlegs

the head

Eyes, brain, tympanum, mouth

the head

the eye and the tympanum

The Eye

Cut the skin around the eye and remove the globular lens. Be careful not to sever the optic nerve!

The Tympanum

Make the circular cut around the tympanum to expose the tympanic cavity and the stapes.

the head

the mouth

Upper Jaw

Floor of eye sockets

The mouth

Other parts structures include: internal nares, vomerine teeth, eustachian tubes, cut angle of jaw, esophagus, and glottis

Tongue

Lower Jaw

the head

the brain

The cut

Make two triangular cuts in the frogs head. Cut through the muscle and scrape away the skull

The brain

To remove the brain, sever the spinal cord and make a cut in front of the olfactory lobe.

The body cavity

internal organs

Make three cuts in the skin

a cut along the upper curve of the thorax

a central vertical cut

a cut along the lower end of the abdomen

cutting through the muscle layer

thE BODY CAVITY

Heart

Liver

Intestine

thE BODY CAVITY

the HEART

TRUNCUS ARTERIOSII

CONUS ATERIOSUS

paired ATRIA

single VENTRICLE

thE BODY CAVITY

01

cut along upper edge to sever the truncus ateriosii

To remove the heart, remove the pericardium and sever the truncus ateriosii

remove the pericardium

thE BODY CAVITY

01

To remove the heart, remove the pericardium and sever the truncus ateriosii

02

The liver must be lifted and the connective tissue must be cut to remove it.

thE BODY CAVITY

01

To remove the heart, remove the pericardium and sever the truncus ateriosii

Lungs

02

Stomach

The liver must be lifted and the connective tissue must be cut to remove it.

Intestine

03

You are now able to see the stomach, intestine, and the lungs

thE BODY CAVITY

lUNGS

Cut the tube that attaches the lungs to the laryngotracheal chamber

thE BODY CAVITY

the stomach and the intestine

The Stomach

Cut along the outer curve to expose the interior of the stomach

The Intestine

Lift the intestine to expose the other parts of the body cavity

thE BODY CAVITY

Stomach

Pancreas

Small Intestine

Sed do eiusmod tempor incididunt ut labore

Spleen

Large Intestine

Fat Bodies

Urinary Bladder

thE BODY CAVITY

Urinary Bladder

Testes

Renal Veins

Kidney

Legs

Muscles of the legs

to expose the muscles:

Transverse cut by the groin

Make a longitudinal cut between the knee and the groin

Transverse cut by the knee

thanks