1. WINDSOR UNIVERSITY SCHOOL OF MEDICINE
DEPARTMENT OF ANATOMY
Head and Neck
Dr. SREEKANTH THOTA

2. Head
Brain

3. Brain
During development the brain can be divided into five continuous parts.
1. Telencephalon (cerebrum)
2. Diencephalon
3. Mesencephalon (midbrain)
4. Metencephalon
5. Myelencephalon (medulla oblongata)

4. Brain

6. Cerebrum -The largest division of the brain
Cerebrum -The largest division of the brain. It is divided into two hemispheres, each of which is divided into four lobes.
Cerebrum
Cerebellum

7. Cerebral Cortex - The outermost layer of gray matter making up the superficial aspect of the cerebrum.
Cerebral Cortex

8. Gyri (ridge)
Sulci (groove)
Fissure
(deep groove)

9. Specific Sulci/Fissures:
Central Sulcus
Longitudinal Fissure
Sylvian/Lateral Fissure
Transverse Fissure

10. Lobes of the Brain (4) Frontal Parietal Occipital Temporal
* Note: Occasionally, the Insula is considered the fifth lobe. It is located deep to the Temporal Lobe.

11. Click the Region to see its Name

12. Homunculus

13. Diencephalon
Consists of the Thalamus, hypothalamus, and other related structures.

14. Mesencephalon (midbrain)

15. . Metencephalon
Cerebellum and the Pons

16. Myelencephalon

17. ventricular system

19. Blood supply
The brain receives it arterial supply from two pairs of vessels, the vertebral and internal carotid arteries , which are interconnected in the cranial cavity to produce an arterial circle (of Willis).

20. Internal Carotid Arteries
The internal carotid arteries arise in the neck from the common carotid arteries.
Each internal carotid artery enters the cranial cavity through the carotid canals in the petrous part of the temporal bones.
The terminal branches of the internal carotids are the anterior and middle cerebral arteries.

22. Vertebral Arteries
The vertebral arteries begin in the root of the neck as the first branches of the first part of the subclavian arteries.
The cervical parts of the vertebral arteries ascend through the transverse foramina of the first six cervical vertebrae.

29. Arterial supply of the primary motor and sensory cortex (coronal view)
Arterial supply of the primary motor and sensory cortex (coronal view). Notice the location of the homunculus with respect to the territories of the cerebral arteries.

30. Arterial supply of the primary motor and sensory cortex (lateral view).

31. berry aneurysm
Sac-like outpouching in a cerebral blood vessel, which can seem berry-shaped
Complications: Subarachnoid hemorrhage

32. Charcot-Bouchard aneurysm
Charcot-Bouchard aneurysmsare aneurysms of the brain vasculature which occur in small blood vessels (less than 300 micrometre diameter).