Thursday, April 28, 2016

Sheep Brain Dissection

1. 

2. Cerebrum: higher brain function (thought/ activity)
Cerebellum: coordinate/ regulate muscular activity
Brain stem: transport information to and from the brain

3. Myelin increases the speed of nerve function.

4. 

5. Thalamus: involved in sensory/ motor signal transportation and the regulation of consciousness and sleep
Optic nerve: carries images from our retina to our brain so they can be interpreted
Medulla oblongata: helps regulate respiration and circulation
Pons: connector for cerebrum and cerebellum
Midbrain: part of the CNS associated with vision, hearing, motor control, sleep/wake, alertness, and temperature regulation
Corpus callosum: connects the left and right hemispheres of the brain
Hypothalamus: produces many of the body’s essential hormones

6. 

Relate & Review

In the brain dissection, we cut the sheep brain in half and identified the different parts of the brain. We used pins to mark the different sections. The brain was weirdly squishy, totally different to what I expected but very interesting. The brain also looked really similar to diagrams, which sometimes what we dissect doesn't, but the little parts of the brain were a little difficult to identify. It was also weird how similar the sheep brain was to diagrams of the human brain. We did figure it out in the end though. It was really cool to hold an actual brain and dissect it, I think we're all really lucky to have been able to do this lab.

The brain cut in half
The brain with all the pins in it, identifying the different parts
The initial identification of major parts and front/ back

 

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