frog dissection lab worksheet answer key

#Frog dissection lab worksheet answer key Manual Pdf

Nov 19, service manual pdf frog dissection lab questions assignment answer key - pecx. A spiderweb like membrane that covers the organs: _ġ2.Frog dissection lab report Therese September 14, 2016 After food passes through the stomach it enters the: _ġ1. The first part of the small intestine(straight part): _ġ0. Yellowish structures that serve as an energy reserve: _ĩ. Eggs, sperm, urine and wastes all empty into this structure: _Ħ. The organ that is the first major site of chemical digestion: _ĥ. The membrane holds the coils of the small intestine together: _Ģ.This organ is found under the liver, it stores bile: _ģ.

Often the top of the kidneys have yellowish stringy fat bodies attached. The lower back of the frog, near the spine. Kidneys - flattened bean shaped organs located at You will need to know the structures for both the male and female frog _ cm Intestine length _ cm Urogenital SystemĪnd excretory system is combined into one system called the urogenital system. Record the measurements below in centimeters. Intestine: Remove the small intestine from the body cavity and carefully Remains of the frog's last meal in there. Stomach: Cut the stomach out of the frog and open it up. STOP! If you have not located each of the organs above, do not continue on Open the frogs mouth and find the esophagus, poke your probe into it

The esophagus is the tube that leads from the frogs mouth to the stomach. It upward, where it gets smaller is the beginning of the esophagus. Esophagus-Return to the stomach and follow Spherical object serves as a holding area for blood.ġ1. Spleen-Return to the folds of the mesentery, this dark red Sperm, eggs, and urine exit the frog's body. The large intestine leads to the cloaca, which is the last stop before solid wastes, Intestine-As you follow the small intestine down, it will Of digested nutrients occurs in the small intestine. They will carry absorbed nutrients away from the intestine. Note the blood vessels running through the mesentery, The ileum is held together by a membrane called Of the small intestine is called the duodenum, the curled portion The exit of digested food from the stomach to the small intestine. The stomach is the first major site of chemical digestion.įrogs swallow their meals whole. Stomach-Curving from underneath the liver There will be a small green sac under the liver. Gall Bladder -Lift the lobes of the liver, Lungs - Locate the lungs by looking underneath and behind the heart and liver.Ħ. A single ventricle located at the bottom of the heart. The leftĪnd right atrium can be found at the top of the heart. Heart - at the top of the liver, the heart is a triangular structure. Bile is needed for the proper digestion of fats.Ĥ. Primarily an organ of digestion, it does secrete a digestive juice calledīile. The right lobe, the leftĪnterior lobe, and the left posterior lobe. This brown colored organ isĬomposed of three lobes. Largest structure of the the body cavity. Label each of the structures underlined above.

On the roof of the mouth, you will find the two tiny openings of the nostrils, if you put your probe into those openings, you will find they exit on the outside of the frog.ħ. Run you finger over both sets of teeth and note the differences between them.Ħ. Both are used for holding prey, frogs swallow their meals whole and do NOT chew. The maxillary teeth are found around the edge of the mouth. The vomerine teeth are found on the roof of the mouth. Use your probe to open the glottis and compare that opening to the esophagus.ĥ. This slit is the glottis, and it is the opening to the lungs. (You may need to use your probe to get it to open up). Just behind the tongue, and before you reach the esophagus is a slit like opening. To what structure does the Eustachian tube attach? _Ĥ. They are used to equalize pressure in the inner ear while the frog is swimming. Close to the angles of the jaw are two openings, one on each side. Use a probe to poke into the esophagus.ģ. In the center of the mouth, toward the back is a single round opening, the esophagus. Draw a sketch of the tongue, paying attention to its shape.Ģ. Does it attach to the front or the back of the mouth? _ (You may remove the tongue). Cut deeply so that the frog's mouth opens wide enough to view the structures inside.ġ. Procedure: Pry the frog's mouth open and use scissors to cut the angles of the frog's jaws open. Is it scaley or is it slimy? _ Anatomy of the Frog's Mouth Measure the diameter (distance across the circle) of the tympanic membrane. The tympanic membrane is used for hearing. Just behind the eyes on the frog's head is a circular structure called the tympanic membrane. What color is the nictitating membrane? _ What color is the eyeball? _Ħ. Use tweezers to carefully remove the nictitating membrane. Locate the frog's eyes, the nictitating membrane is a clear membrane that attached

Frog dissection lab worksheet answer key