Copy and paste the link below to participate in the Virtual Frog Dissection. htt
ID: 98658 • Letter: C
Question
Copy and paste the link below to participate in the Virtual Frog Dissection.
http://www.mhhe.com/biosci/genbio/virtual_labs/BL_16/BL_16.html
Answer the questions of this report during or after completion of the dissection.
1. Fill in the blanks next to the terms on the left, to provide the function of each item in a frog
Tympanic membrane ____________________________
Nostrils _______________________________________
Skin __________________________________________
Glottis ________________________________________
Pancreas ______________________________________
Ovaries _______________________________________
2. Provide the correct organs that go with each of the systems below. The number represents the minimum requirement for full credit.
Digestive System (3)
Excretory System (2)
Reproductive System (2)
Respiratory System (3)
3. Provide an example of a muscle movement, and the opposite or antagonist movement. You can use diagrams, photo or descriptions. You may not use the example provided in the introduction. (biceps/triceps)
Digestive System (3)
Excretory System (2)
Reproductive System (2)
Respiratory System (3)
Explanation / Answer
1.Tympanum-It functions much like our eardrum does –the tympanum transmits sound waves to the middle and inner ear, allowing a frog to hear both in the air and below water.
Skin- mucus glands in the skin keep the frog moist, which helps absorb dissolved oxygen from the air. A frog may also breathe much like a human, by taking air in through their nostrils and down into their lungs.
Glottis- The glottis is the part of the frog that inflates the lungs of the frog. It makes the frog breath. Theglottis is the opening to the lungs and is located in the back of the mouth.
Pancreas-It makes digestive enzymes that flow through the pancreatic duct to the small intestine. These enzymes, along with bile from the gallbladder, break down food for use as energy by the body. The pancreas also makes insulin and glucagon, hormones that help regulate blood glucose (sugar) levels.
Ovaries-The ovaries are very easy to locate. They are dark organs which may fill most of the female frog's body cavity,
2.
3.For muscle pairings referred to as antagonistic pairs, one muscle is designated as the extensor muscle, which contracts to open the joint, and the flexor muscle, which acts opposite to the extensor muscle. These pairs exist in places in the body in which the body cannot return the limb back to its original position through simple lack of contraction. Typical muscle pairings include the biceps brachii and triceps brachii, which act to flex or extend the forearm.
Digestive system Reproductive system Excretory organ Respiratory system Stomach ovary kidneys nostrils esophagus oviduct ureter lungs small intestine uterus skin