This section shows the organs in Layer Two of the the frog's body.


Use the forceps and the probe to pick up the the liver and reveal Layer Two. You are now at the second layer of organs within the the frog's body cavity. At this point you will be able to see the gall bladder, the stomach, and the small intestine.

The Gall Bladder in preserved (l) and pithed (r) frogs.

When you raise the liver up you will see a small, greenish sac underneath it. This is the gall bladder. In the pictures above it is circled by a yellow border. (In the image of the pithed frog, the liver has been removed instead of folded back.)

The Stomach in preserved (l) and pithed (r) frogs.

The stomach is a large, firm, sac-like organ on the left side of the frog. In the pictures above it is circled by a yellow border. (In the image of the pithed frog, the liver has not yet been folded back.)

The Small Intestine in preserved (l) and pithed (r) frogs.

The small intestine is a long, folded, tube-like organ that is posterior to (below) the stomach. It is similar in color to the stomach, but smaller in diameter. In the pictures above it is circled by a yellow border. (In the image of the pithed frog, the liver has not yet been folded back.)

Removing Liver

You have now finished examining Layer Two. To see Layer Three, you need to remove the liver, heart and gall bladder as pictured above.


(6.1MB) Overview of Layer Two

Let's Practice: Layer Two


You're now ready to proceed to the next step, Layer Three. Or, you can Return to the Main Menu, or go back to the Organs Sub-Menu.

© 1994 Mable Kinzie. All rights reserved.