QS Study

Super lateral surface of cerebrum: It is convex and is related to the cranial vault. It is about 2-5 mm thick and accounts for about 80% of the brain’s totaling mass. Functions include thinking and reasoning, memory, consciousness, attention, perceptual awareness and language.

Border

  • Superomedial: It separates this surface from the medial surface.
  • Inferior lateral: It separates this surface from the inferior surface.
  • Superciliary: It separates this surface from the orbital surface of the frontal lobe.

Super Lateral Surface of Cerebrum 1

Fig: Super Lateral Surface of Cerebrum border

Lobes

  1. Frontal lobe: Occupies the area anterior to the central sulcus and superior to the lateral sulcus.
  2. Parietal lobe: Occupies the area posterior to the central sulcus and superior to the lateral sulcus extending posteriorly up to the parieto-occipital sulcus.
  3. Temporal lobe – temporal pole, superior temporal gyrus, superior temporal sulcus, middle temporal gyrus, middle temporal sulcus, inferior temporal sulcus, preoccipital notch
  4. Occipital lobe – superior occipital gyrus, inferior occipital gyrus, occipital pole

Sulci

  • The central sulcus
  • The lateral sulcus.

Sulei on different lobes –

(A) Frontal lobe –

  • The precentral,
  • The superior frontal sulcus.
  • The inferior frontal sulcus.

(B) Parietal lobe:

  • The postcentral sulcus.
  • The intraparietal sulcus.

(C) Temporal lobe:

  • The superior temporal sulcus.
  • The inferior temporal sulcus.

(D) Occipital lobe:

  • The lateral occipital sulcus.
  • The Innate sulcus.
  • The parieto occipital sulcus.
  • The transverse occipital sulcus.

Gyri

(A) In frontal lobe:

  • The precentral gyms.
  • Superior, middle and inferior frontal gyri.

(B) In parietal lobe:

  • The postcentral gyrus.
  • Superior & inferior parietal lobules.

(C) In temporal lobe: Superior, middle & inferior temporal gyri.

(D) In occipital lobe: Superior and middle inferior occipital gyri.

Related Study: