GUIDE TO A FROG DISSECTION

ByMr. Berg and Ms. Cerletty

For this dissection Mr. Berg will be wearing black gloves in an attempt to be super cool.

Incisions- Step 3The skin of the frog is extremely thin. If you are cutting through muscle and exposing internal organs STOP. You have cut too deeply.

Observing the skin- Step 5

Skin flap.

You may remove this.

Blood vessels

Abdominal muscles

Cutting through the muscles of the abdominal wall- Step 6

Do not drink the juice. Down the sink with it!

For female frogs only!

Fat bodies

Liver Liver Chicken Dinner

Gallbladder

Stomach

Stomach

Pyloric sphincter

Small Intestine

Large Intestine

Spleen

Kidney’s and Bladder

This is where you should find the bladder. We destroyed ours by not being careful. If you find yours let us know and we’ll add it to this awesome power point.

Male reproductive structures

Female reproductive structures.

F EggsG Oviduct

Do you know what E is?

Heart

Lungs

Removing the stomach- Step 9

Cut at the pyloric sphincter and the esophagus

Note the folds in the stomach which allow for expansion. Watch out for live crayfish!

Removing and measuring the intestines- Step 10 and 11

Always do your lab in pencil.

Comparing a frog and human heart