Frog Guts Video Questions

Master frog anatomy! Answer key questions on dissection, organs, and body systems.

Frog Guts Virtual Dissection - External ExaminationPart I. External ExaminationTo answer Part I. Questions 1 - 13. (Click the link above) 1. What type of vertebrates are frogs? amphibians2. Frogs are born with gills and as they grow they develop lungs.3. The frog’s skin is unique because it is used as a respiratory surface.4. The frog’s skin absorbs enough water that it does not have to drink.5. The mucus of the frog’s skin keeps it from drying out and makes it slippery to avoid predators.6. The color of the frog’s skin helps it to hide.7. The tympanic membrane is the frog’s ear drum.8. The third eyelid of the frog is the nictitating membrane and it protects the eye under water and moistens it on land.9. Nostrils are also referred to as external nares.10. The webbing between a frog’s toes allows it to swim fast.11. The cloaca is located where the two legs meet.12. Urine, feces, egg or sperm exit from the cloaca.13. Male frogs have a larger thumb pad than female frogs. Frog Guts Virtual Dissection - Incisions Skin MuscleFrog Guts Virtual Dissection - Observations Extract Fat BodiesPart II. Incisions.Through the skin . . .Through the muscle . . .To answer Part II Questions 14 - 21. (Click on the links above) 14. Four pins are used to hold a frog down. One is placed in each arm and one is placed in each leg The first incision is made from the chin. Can also be made from the bottom to the chin. Can also use scissors.16. The next two incisions are made at the top and bottom laterally.17. The loosened skin must be pulled back and pinned down. The skin may also be cut off. 18. The next incision is made upwards through the muscle tissues using a pair of scissors.19. The next two incisions are made laterally across the chin and the abdomen.20. The loosened skin must be pulled back and pinned down.21. Label the organs of the frog. (separate assignment) Frog Guts Virtual Dissection - Circulatory SystemPart III. The Circulatory System.To Answer Part III, Questions 22-25. (click on the link above) 22. What are the components of the circulatory system? blood, blood vessels, heart23. There are three chambers of a frog’s heart. They are the left atrium, the right atrium, and the ventricle.24. A capillary can be as small as a red blood cell in diameter.25. List one reason why capillaries are important. delivery of oxygen and other nutrients to each cell Frog Guts Virtual Dissection - Digestive SystemPart IV. Digestive System.To Answer Part IV, Questions 26-34. (Click on the link above) 26. The two substances produced in the liver are glycogen and bile.27. Bile is stored in the gallbladder.28. Digestion begins in the mouth.29. Vomerine teeth are used for grasping prey.30. The gullet is the entrance to the esophagus from the mouth.31. The two types of digestion that take place in the stomach are chemical and mechanical.32. The villi are projections through which “food” is absorbed in the small intestine.33. The “food” then enters the large intestine. This is where water is absorbed.34. Wastes exit the frog from the cloaca. Frog Guts Virtual Dissection - Respiratory SystemPart V. Respiratory SystemTo answer Part V, Questions 35. (click on the link above) 35. The gas is exchanged through the air sacs called alveoli. Frog Guts Virtual Dissection - UrogenitalPart VI. Urogenital SystemTo Answer Part VI, Questions 36-38 (click on the link above) 36. The kidney’s function to filter blood of excess salts and chemicals. The filtered substances are sent to the bladder.37. The role of the spleen is the recycle old red blood cells into new ones.38. The role of fat bodies is to store energy. Part VII. Nervous System : Frog Guts Virtual Dissection - Nervous System 39. The olfactory lobe and nerves lie at the front of the brain and are responsible for the specialized sense of smell.40. A frog’s cerebrum is smaller than a man. This leads frog’s to rely on instinct rather than processing information.41. The most developed part of the frog’s brain is the optic lobe.42. The cerebellum is used for motor control and balance.43. The medulla oblongata regulates respiration, swallowing, and even scratching.44. The purpose of the skeletal system is to support the frog’s organs and tissues.