1. 7M Science

2. Lungs: Digestive System: Circulatory System: We both have 2 lungs used for breathing. We both have a mouth, esophagus, stomach, pancreas, liver, gall bladder, small intestine, and large intestine. We both have arteries, capillaries, veins, blood, and a heart

3. Brains: Skeletons: Muscles and Connective Tissue: Although we both have brains, ours is more complex. We both have a skeleton that provides a framework for our bodies, protects our internal organs, and allow us to move. We both have these tissues that hold our skeletons together.

4. Body Configuration: Respiratory System: Reproductive System: A frog’s heart, lungs, and digestive systems are all found in one single hollow space. Our internal organs are housed in three distinct cavities: chest, abdomen, and pelvis. Frogs breathe through their skin. Known as “cutaneous respiration”, this process allows oxygen to pass through the skin and directly into the bloodstream. Frogs also have neither ribs or diaphragms; body parts that help humans breathe. And, their chest muscles are not used for breathing. Although both humans and frogs produce eggs, frog eggs are fertilized externally. Also, reproductive organs are housed internally in both males and females.

5. Skeletal System: Circulatory System: Frogs have 1 forearm and 1 lower leg bone, while we have 2. Frogs lack several vertebrae and do not have a pelvis. They also have structures not found in the human skeleton i.e. the urostyle. A frog has a 3 chambered heart (2 upper chambers (atria) and only 1 lower chamber) compared to the 4 chambered heart a human has.

6. Nictitating Membrane: Tympanic Membrane: Eustachian Tube: Mucous Glands: Granular Glands: A clear, retractable membrane that protects each eye. A circular eardrum located behind each eye. Tube that connects the middle ear to the mouth, aka the buccal cavity. Located in the skin, these glands secrete mucous to keep the skin moist. Glands that secrete sticky, bitter substances to make amphibians unattractive to predators.

7. Vomerine Teeth: Cloaca: Glottis: Gills: Two rough pads on the roof of the mouth used to hold prey. A cavity that collects materials from intestines, urinary bladder, and reproductive organs. A slit-like opening from the throat to the lungs that plays an important role in breathing. Structures that help amphibians breathe while they are tadpoles.