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Brain dissection research
Websites for Research
https://www
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com/anatomy/sheepbrain/sheep_dissection
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hometrainingtools
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While the cerebrum takes up 85% of the human brain, the cerebrum of the sheep's only takes up
30%
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That is because
a sheep’s main function compared to a human’s is relatively primal and thus requires more basic
functions, which are provided by the cerebellum, such as the involuntary actions of posture, balance and
coordination, rather than higher thinking functions
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The sheep's
brain has a much larger piece of tissue compared to the human brain since the animal requires great
coordination between what it ‘wants’ and the actual actions it must take to achieve its ‘want’
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➔ The medulla oblongata is responsible for the unconscious movements of the body, sometimes referred to
the functions of the autonomous nervous system
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➔ The hypothalamus is located at the top of the brain stem in both the human and sheep brain, controlling
thirst and temperature, as well as the production of hormones, since it controls the pituitary gland
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➔ The pituitary gland is a sac-like area that attaches to the brain between the pons and the optic chiasm
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The sheep’s pituitary gland is similar to the human’s brain, and both are controlled by the
hypothalamus
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The branches
are white matter, made up of nerve axons
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Grey and white matter can also be found in the cerebrum if you cut into parts of it
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Holiday Homework: Structure of the Brain
The brain functions as the coordinating centre of sensation, intellectual and nervous activity and is part of
the central nervous system (CNS)
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The brain is not a single
organ, contrary to popular beliefs
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Cerebrum:
The cerebrum is the largest part of the brain, consisting 85% of its mass, and controls voluntary
movements, speech, memory, intelligence and sensations
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The left hemisphere of the
cerebrum is shown by brain research to be used more for language and logical processing, while the
right side is more responsible for visual and intuitive processing
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The frontal lobes are involved in motor function, problem solving, spontaneity, memory,
language, initiation, judgement, impulse control, and social behaviour
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The occipital lobe is mainly dedicated with visual interpretations in mammals,
while the temporal lobe manages auditory functions
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The functions of the medulla include respiration, heartbeat, involuntary
sneezing, coughing and swallowing and digestion
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Cerebellum:
The cerebellum controls involuntary actions, including posture, balance and coordination
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However, the cerebellum does not initiate movements, instead, it contributes to an individual’s precision
and accuracy in the movement
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Hypothalamus:
The hypothalamus is located at the top of the brain stem and controls thirst and temperature
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Hormones released from the pituitary stimulate other glands to release
their hormones
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Some of its
functions are the relaying of sensory and motor signals to the cerebral cortex,and the regulation of
consciousness, sleep, and alertness

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