Dissection and Isolation of a frogs CNS
Dissection of an adult bullfrog's central nervous system (CNS)Experiment consists of the dissection and analyzation of a bullfrog's nervous system. Dissection consists of the isolation of the CNS consisting of the brain and spinal cord. It also consists of analyzing the nervous tissue under the microscope. Materials needed: frog, scalpel, razor blade, dissecting tray, pins, forceps, scissors, microscope, slides, slide covers, water, blue dye, diagram of frog's brain, paper towel.The bullfrog's CNS is composed of the brain, which is further divided into the olfactory bulb, cerebrum, optic tract, optic lobe, pituitary gland, and the cerebellum. Also contained within the CNS is the spinal cord which in contained within the spine The brain was about an inch in length and ¾ of an inch in diameter. The spinal cord was about 2.5 inches in length and the diameter of the spine was about 1/8 of an inch. The cerebellum in the frogs brain is very small in comparison to the rest of the brain and also to the size of the cerebellum in other animals compared to the size of their brains.Place the frog in the dissecting tray so the ventral section faces upwards with the head pointing away from you. This will allow for e
Using a razor blade remove a small section of the brain. You must now remove the lower jaw of the frog. Throw away the frog and all the large pieces of it. It was narrow and each part of the brain was somewhat easily distinguishable. html - various informationhttp://www. asier access to the CNS since you don't have to cut through the skull. Pull the scalpel in a caudal direction towards the tail. The stringy bundles of fiber would be the nerve tracks. This will expose a membrane covering the brain. Place the paper towel on the side opposite where you placed the dye. The tissue felt smooth and rubbery.
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