Comparing the Sheep Brain to the Human Brain – A Visual Guide to Use During Sheep Brain Dissection Laboratories Margarita Bracamonte, Ph.D. Northland Community & Technical College, East Grand Forks, MN

Several Community and Technical Colleges currently do not have a human cadaver laboratory to teach human anatomy and physiology labs. To learn about the human brain anatomy, sheep brains are usually dissected in anatomy and physiology laboratories at Community and Technical Colleges.

Therefore, the next slides can be used during the sheep brain dissection laboratory to visually compare the sheep brain to human brain structures with the goal to learn the anatomy of the human brain.

How much does the sheep brain weight compared to the human brain? 140 grams* 3 - 4 pounds *1 pound = 453.6 grams

Human Brain Sheep Brain Cerebellum Spinal Cord

The human brain (and sheep brain) is made up of four parts: 1. Cerebrum Human Brain 2. Cerebellum Continues… Sheep Brain

Midsagittal Section 3. Diencephalon 4. Brainstem 4. Brainstem Human Brain Sheep Brain 4. Brainstem

Ventral View Human Brain Sheep Brain Spinal Cord Spinal Cord Brainstem

Structures found in the Cerebrum Sheep Brain Human Brain Superior View

Cerebrum – Superior View Longitudinal Fissure Sheep Brain Human Brain

Cerebrum Transverse Fissure Human Brain – Right Lateral View Sheep Brain – Superior View

Gyri (Gyrus – Singular) Cerebrum Gyri (Gyrus – Singular) Human Brain – Lateral View Sheep Brain – Superior View

Sulci (Sulcus – Singular) Cerebrum Sulci (Sulcus – Singular) Human Brain – Left Lateral View Sheep Brain - Superior

Sulci - shallow groves between gyri Cerebrum – Midsagittal View Sulci - shallow groves between gyri Human Brain

Sheep Brain (Right Lateral View): Cerebral Lobes Frontal Lobe Parietal Lobe Temporal Lobe Occipital Lobe

Human Brain (Right Lateral View)-Cerebral Lobes Frontal Lobe Parietal Lobe Temporal Lobe Occipital Lobe

Gray & White Matter of the Cerebrum Sheep Brain (Anterior) Human Brain Gray Matter White Matter (Posterior)

Gray Matter = Cerebral Cortex Human Brain Cerebral Cortex What parts of a neuron are found at the cerebral cortex?

White Matter = Cerebral Medulla Human Brain Cerebral Medulla What parts of a neuron are found at the cerebral medulla?

Structures found at the Cerebrum Corpus Callosum Human Brain Midsagittal Section Sheep Brain

Structures found at the Cerebrum Fornix Human Brain Midsagittal Section Sheep Brain

Structures found at the Cerebrum Lateral Ventricles Human Brain Midsagittal Section Sheep Brain

Structures found at the Cerebrum Third Ventricle Human Brain Midsagittal Section Sheep Brain

Structures found at the Cerebrum Fourth Ventricle Human Brain Midsagittal Section Sheep Brain

Structures found at the Cerebellum Human Brain Cerebellum Sheep Brain

Cerebellar Cortex (Gray matter) Midsagittal Section Human Brain Human Brain Cerebellar Cortex (Gray matter) What parts of a neuron are found at the cerebellar cortex? Sheep Brain

Cerebellar Medulla (White matter) Midsagittal Section Human Brain Human Brain Cerebellar Medulla (White matter) What parts of a neuron are found at the cerebellar medulla? Sheep Brain

Structures found at the Brainstem Sheep Brain Human Brain Spinal Cord Spinal Cord Brainstem Ventral View

Structures found at the Brainstem Pons Spinal Cord Spinal Cord Sheep Brain Human Brain

Structures found at the Brainstem Medulla Oblongata Spinal Cord Spinal Cord Sheep Brain Human Brain

Structures found at the Brainstem Midsagittal Section Human Brain Midbrain Sheep Brain

Structures found at the Diencephalon Human Brain Midsagittal Section Sheep Brain

Structures found at the Diencephalon Thalamus Human Brain Midsagittal Section Sheep Brain

Structures found at the Diencephalon Hypothalamus Human Brain Midsagittal Section Sheep Brain

Cranial Nerves – Olfactory Nerves Spinal Cord Spinal Cord Sheep Brain – Ventral View Human Brain – Ventral View

Cranial Nerves – Olfactory Nerves Olfactory Bulbs Spinal Cord Spinal Cord Sheep Brain – Ventral View Human Brain – Ventral View

Cranial Nerves – Olfactory Nerves Olfactory Tracts Spinal Cord Spinal Cord Sheep Brain – Ventral View Human Brain – Ventral View

Cranial Nerves – Optic Nerves Spinal Cord Spinal Cord Sheep Brain Human Brain

Optic Nerves Cross at Optic Chiasm Spinal Cord Spinal Cord Sheep Brain Human Brain

Cranial Nerves – Optic Nerves Optic Tracts Optic Tracts Spinal Cord Spinal Cord Sheep Brain Human Brain

Practice your Knowledge About the Human Brain Anatomy…. Name the cerebral lobe Anterior Describe the function of this cerebral lobe Posterior

Practice your Knowledge About the Human Brain Anatomy…. Name this part of the human brain. Anterior Anterior Describe its function… Posterior Posterior

Practice your Knowledge About the Human Brain Anatomy…. Name this part of the human cerebrum Anterior Describe its function… Posterior

Practice your Knowledge About the Human Brain Anatomy…. Inferior view of the human brain. Name this part of the brainstem Describe its function…

Practice your Knowledge About the Human Brain Anatomy…. Name these nerves Inferior view of the human brain. Describe the function of these nerves…

Practice your Knowledge About the Human Brain Anatomy…. Name this fissure Anterior Anterior Describe its function… Posterior Posterior