Frog Dissection

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ACROSS
1   Membrane that covers the eye
5   Opening in the mouth, airway
7   Tubes that equalize pressure to the eardrum
8   At the end of the stomach, regulates food exiting the stomach; pyloric ____ valve
10   System that includes the stomach and intestines
14   The very first stretch of the small intestine
16   The esophagus leads to this structure
17   Membrane that functions as an eardrum
19   Located above the kidneys, but only in male frogs
20   Teeth at the roof of the mouth
21   Spider-like membrane that covers the heart and other organs
DOWN
2   Can be large or small, helps digest food
3   The largest organ in the frog's body cavity, having 3 lobes
4   The opening where waste, eggs and sperm exit
6   Located underneath the liver;___ bladder
9   Long tube that runs around the kidneys, carries eggs in female frogs
11   The lower (single)chamber of the frog's heart
12   Used to capture food, attaches to front of mouth
13   Stores urine, urinary ___
15   Opening in the mouth where food enters
18   Famous frog from the Muppets