1. Amphibians: Absorbs oxygen through their skins
Frog notes
Amphibians: Absorbs oxygen through their skins
Liver: large, brownish colored organ covering most of the body cavity
Function - It extracts Impurities (toxins and wastes) from the blood so they can be eliminated from the body.
- It produces bile.
Gallbladder: small greenish sac found under the liver
Function - responsible for the storing bile.
-a chemical that assists in digestion
-involves in breakdown of fats
Heart: triangular shape the pumps blood throughout the body.

2. Stomach: a large, firm, sac-like organ on the left side of the frog
Female Frogs: Ovaries, Eggs, and Oviducts( coil like where eggs passes through and out of the cloaca)
Male Frogs: Testes (reproductive organ) and Sperm storage
- no separate ducts
Kidneys and Testes share the a single duct through the cloaca.
Heart: triangular shape the pumps blood throughout the body.
**Food enters the mouth goes down the pharynx into the esophagus and then goes to the stomach.**
Stomach: a large, firm, sac-like organ on the left side of the frog
Function : the storage sac for food and mixes it w/ enzymes to begin digestion.
Pancreas: found in the mesentery between 1st coil of the small intestine and the stomach
-on top of stomach yellowish, ribbon like
Function: involve in producing enzymes for digestion.

3. Large Intestine: posterior organ of the digestive system
Small Intestine: a long, folded, tube like organ that is posterior to the stomach
Function: the primary organ that absorbs nutrients into the blood stream
Duodenum: 1st part of the small intestine.
Illeum: the coiled part of the small intestine.
Mesentery- membranous structure ( highly vascularized) that is attached to the small intestine.
- contains blood vessels in both bring in oxygen to the intestine but also absorbs nutrients being released through the walls of the intestine.
Spleen: small, spherical like bag hanging in the mesentery of the small intestine and near the large intestine
Function- makes RBC (stores blood and stores)
Large Intestine: posterior organ of the digestive system
Function: stores undigested food
- where water is absorbed out of the its contents of the intestine and leaving solid/fecal matters that is passed out of the cloaca.

4. Fat Bodies: yellow, spaghetti looking organs found on either side of the frog Function: masses of fat needed for hibernation and mating Kidneys: elongated brownish organs found in the lower part of the frog’s abdomen Function: separated waste from water products (concentrated urine) Lungs: anterior end of the body on either side of the heart Function: responsible for obtaining oxygen from the air and expelling carbon dioxide.

5. Cloaca: the hole