Examining the Sheep Brain

1
Examining the Sheep Brain

• Outline
• Directional and Sectioning Terminology
• Organization of the Brain
• Views We Will Be Looking At
• Ventral
• Hippocampal
• Saggital
• Horizontal (Transverse)
• Coronal
• The Ventricular System

2
Directional Terminology
Axis 1 Medial-lateral axis Axis 2
Anterior-posterior axis (rostral-caudal
axis) Axis 3 Dorsal-ventral axis
1.
3.
2.
3
Organization of the Brain

• FOREBRAIN
• Telencephalon (cerebral hemispheres)
• Neocortex (cerebral cortex)
• Basal Ganglia limbic system
• Diencephalon
• Thalamus
• Hypothalamus ( Pituitary gland and mammillary
  body)
• Optic chiasm, pineal body

4
Organization of the Brain cont.

• MIDBRAIN
• Mesencephalon
• Tegmentum, Tectum
• HINDBRAIN
• Metencephalon
• Cerebellum
• Pons
• Myelencephalon
• Medulla

5
Ventral View
Page 18
6
Hippocampal View
Hippocampus Intact (Page 23)
Hippocampus Removed (Page 25)
7
Saggital Section
Page 22
8
Horizontal Section
Pages 29 - 30
9
Coronal Section
Pages 31 - 37
10
Ventricles
Saggital Section
Horizontal Section
Third Ventricle
Fourth Ventricle
Lateral Ventricles
Cerebral (Sylvian) Aqueduct
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Ventricular System cont.
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Schedule

• October 29 (Today)
• Ventral/Dorsal Views
• Hippocampal View
• Saggital Section
• November 5th
• Horizontal Section
• Coronal Section
• November 12th
• Review
• Lab Exam