Frog dissection post lab questions key4/26/2023 ![]() Life cycle Frogs will lay eggs, the eggs will hatch out tadpoles, the tadpoles will grow legs and become adults. Gas exchanges also happen on the skin Amphibian Half of their lives in water and half of their lives on land.įrogs start as tadpoles in the water. The hind legs are strong and muscular and are used for jumping and swimming.The forelegs provide balance and cushion the frog when it lands after jumping. Examine the hind legs and front legs of the frog. ![]() ![]() Vomerine teeth used for holding prey Esophagus (7) Passageway to the stomach, where the frog swallows food Eustachian tubes (4) Used to pressurize the inner ear while the frog is swimming Glottis (8) Used to exchange gases with the lungs, Breathes and vocalizes with glottis Digestive system Food enters mouth → down esophagus → stomach → small intestine → large intestine → rectum → waste goes out the cloaca Respiratory system Air travels in the nostrils → through the glottis → into lungs then back out. Place the frog on its belly (ventral side) in the dissecting pan2. Piloic Center Regulates the exit of partially digested food from the stomach Cloaca This is what the large intestine leads to Spleen Organ found within the mesentery that stores blood Liver The largest organ found in the body cavity Right Lobe, Left Anterior Lobe, Left Posterior Lobe Name the three lobes of the liver Tympanic Membrane Used for hearing senses sound waves in the inner ear Fore leg Hind leg Used for jumping, hopping and swimming. FROG DISSECTION POST LAB ASSIGNMENT PART A: LABELLING 5 MARKS COMM Take a picture of the frog you have dissected and identify the organs on the frog below.
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