Frog DissectionFrog Dissection

TEKS 7.12B identify the main functions of the systems of the human organism including the circulatory, respiratory, skeletal, muscular,

digestive, excretory, reproductive, integumentary, nervous and endocrine

systems

Dorsal

Ventral

External Structures & Mouth

Upper eye lid

Nictitating membrane

Tympanic membrane (eardrum)

External nares

Forked tongue

Point of attachment for tongue

Internal nares

Vomerine teeth

Maxillary teeth of upper jaw

Eustachian tubes

Glottis

Gullet

First cut

First cut

First cut

Insert scissors under skin only!!

First cut

Transverse cuts

Transverse cuts

Cutting through the muscles

Cutting through the muscles

Insert scissors under muscles

only!!

Cut carefully through the clavicle

Transverse cuts

Transverse cuts

Cut off flaps of skin & muscle

Heart with Heart with pericardial pericardial

sacksack

Ventricle

Right atrium

Left atrium Aorta

3 lobes of the liver

3 lobes of the liver

Gall bladder

Gall bladder

Stomach

Pancreas

Small intestine

coils of small intestine

Large intestine

Urinary bladder

Large intestine

Spleen

Fat Bodies

Cut at top of

stomach

Cut at bottom of stomach

Lung

Lung

NOTE: Place a syringe or pipette

in the throat of the frog & try to

inflate the lungs.

Longitudinally cut stomach open

Rugae in stomach lining

Kidney

Ovary

Oviduct

Heart

Kidneys

Lungs

Heart

Fat bodies

Lungs

Large intestine

Small intestine

Spleen

Urinary bladder