1. Frog Anatomy

2. External Anatomy External nares or nostrils - Anterior openings for the entry or exit of air. Tympanic Membrane - The eardrum - receives sound waves Nictitating Membrane - A transparent part of a frog’s lower eyelid that moves over the eye to clean it and protect it.

3. External Anatomy

4. Mouth Anatomy Eustachian Tube Openings: Openings in the mouth that lead to tubes that connect to the middle ear to equalize air pressure Vomarine and Maxillary Teeth: Used for holding prey Internal Nares (nostrils): Helps with breathing

5. Mouth Anatomy Esophagus: Tube leading to the stomach Tongue: Helps with grabbing and swallowing prey Glottis: Tube leading to the lungs

6. Mouth Anatomy

7. Internal Anatomy Heart - Pumping organ of the circulatory system that has 3 chambers. The Left Atrium, The Right Atrium, and the Ventricle. Stomach - Stores food and mixes it with enzymes to begin digestion.

8. Internal Anatomy Liver - Secretes bile and helps digest food and filters blood. Lungs - Exchange point where carbon dioxide leaves and oxygen enters the blood; helps the frog breathe.

9. Internal Anatomy Pancreas - Gland which secretes digestive enzymes. Gall Bladder - Sac which stores bile. Spleen - Organ in the frog’s circulatory system that makes, stores, and destroys blood cells.

10. Internal Anatomy Small Intestine - The principal organ of digestion and absorption of digested food. Large Intestine - Posterior organ of the digestive system which stores undigested food.

11. Internal Anatomy Cloaca - Organ through which the frog’s digestive waste and reproductive cells leave the body. Fat Bodies - Masses of fat in the body cavities of frogs. Needed for hibernating and mating.

12. Internal Anatomy Kidneys - Organs that filter the blood and remove the wastes to make urine. Urinary Bladder - The organ that collects and stores urine until released.

13. Internal Anatomy Testes - Male sex organs that produce sex cells (sperm). Ovaries - Organs of the female reproductive system that produce the eggs.

14. Internal Anatomy