Sheep Brain

Lab 8

The Nervous System

Experiment 3: Sheep Brain Dissection

1. The human brain is heavier and larger than the sheep brain. A sheep’s brain is more elongated while a human’s brain is rounder. The olfactory bulb is larger in a sheep’s brain than in a human’s brain.
2. It separates the frontal and parietal lobes.
3. The sheep’s olfactory bulb is much larger in its brain than it is in a human. Because a sheep needs to be able to smell for survival, this is probably why it is so much larger. While a human can look for their food with their eyes, a sheep smells for it.
4. Cerebrospinal fluid circulates through the ventricles to protect the brain.
5.  The function of each region of the cerebral cortex depends on the structures with which it communicates. The postcentral gyrus functions mainly as a general somatic sensory area. It receives impulses from receptors activated by heat, cold, and touch stimuli. The precentral gyrus functions chiefly as the somatic neuron in this area descend over motor tracts and eventually stimulate somatic effectors, the skeletal muscles. The transverse gyrus of the temporal love serves as the primary auditory area. The primary visual areas are in the occipital lobe. No part of the brain functions alone. Many structures of the central nervous system must function alone together for any one part of the brain to function normally.

Lab Report

Title: Sheep Brain Dissection

Aim: In this experiment, I dissected a sheep brain to understand the structures of the brain.

Background: The brain is the master control center of the body. Its one of the largest organs in adults. It also consists of almost 100 billion neurons and the sam number of glia.

Hypothesis: By dissecting the sheep brain, we might be able to identify the internal and external parts of the brain.

Results:

 [pic 1]