![]() ![]() Life cycle Frogs will lay eggs, the eggs will hatch out tadpoles, the tadpoles will grow legs and become adults. ![]() The manual separates the laboratory course into two separate modules. To make incisions, youll need a sharp scalpel and a pair of tweezers, or some other kind of poking device, dissection pins, lab instructions, and your frog. This frog dissection page describes how to dissect a frog and lists organs for students to find and check as the perform the dissection. marcescens, a bacterium unique in its production of the red pigment prodigiosin. To determine the frog’s sex, look at the hand digits or fingerson its forelegs. 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. 2 Post Lab Questions And Answers Frog Dissection marcescens, or S. Preserved frog Dissection scissors Dissection pins (610) Dissection (20 points): Put on safety goggles, gloves, lab coat, and go to your assigned lab station. 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. 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.
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