Major Sulci

Question 1

Precentral gyrus

Answer 1

• lateral surface of each frontal lobe, anterior to the central sulcus
• controls volitional movements of the contralateral side of the body

Question 2

Central sulcus (aka: central fissure)

Answer 2

• runs down the middle of the lateral surface of the brain, separating the frontal lobe from the parietal lobe
• separates the primary motor cortex from the primary somatosensory cortex, and also the frontal and parietal lobes

Question 3

Postcentral sulcus

Answer 3

• responsible for proprioception
• separates the postcentral gyrus from the remainder of the parietal lobe

Question 4

Pareto-occiptal sulcus

Answer 4

• provides a landmark for defining the location of the primary visual cortex

Question 5

Lateral sulcus

Answer 5

• to separate the temporal lobe from the frontal and parietal lobes