Dissection and Isolation of a frogs CNS

A detailed Summary of 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 ž 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

http://k-2.stanford.edu/creatures/InfoFrames/CNS.1.1.html - various information

The intact, isolated brain matter appeared to be gray, signifying that it was unmyelinated nerve tissue. It was narrow and each part of the brain was somewhat easily distinguishable. Under the microscope the tissue had easily distinguishable nerve fibers and in some cases it contained vascular tissues distinguishable by the small capillaries. The tissue felt smooth and rubbery. It was somewhat soft yet firm. Based on my observations from the microscope I saw how the soma and dendrites and axons all went together to form nervous tissue.

Some common words found in the essay are:
CNS Experiment, , spinal cord, using scalpel, nervous system, paper towel, placed dye pull, remove internal organs, dissecting tray, cover slip, razor blade, thin section, caudal direction, using scissors,

Approximate Word count = 841
Approximate Pages = 3 (250 words per page double spaced)

Category: Science

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