Anatomy study note · Head and neck

Precentral gyrus

The gyrus immediately in front of the central sulcus: the motor area of the cerebral cortex.

Key points

• Motor area; in front of the central sulcus (frontal lobe).
• Controls the opposite side; inverted body map.
• Leg area: ACA; rest: MCA.
• Cerebral hemisphere: telencephalon.
• Cortex = grey matter on the surface, white matter beneath.
• CNS myelin: oligodendrocytes.

The full note in the atlas also covers

Features · Blood supply · Histology · Development · Clinical notes

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 12, PDF pp. 1560, 1562–1564, 1641–1642
• Inderbir Singh’s Human Embryology, ch. 17, PDF pp. 312, 334, 345
• BRS Cell Biology & Histology, 7th ed., ch. 9, PDF pp. 163, 169–170

More from the head and neck

• Retina
• Salpingopharyngeus
• Scalenus anterior
• Scalenus medius and posterior
• Sclera
• Skull
• Sphenoid bone
• Sternocleidomastoid
• Sternohyoid
• Sternothyroid
• Stylohyoid
• Stylopharyngeus

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