Questions: Question 3 (1 point) What is the name of the sulcus that separates the parietal and frontal lobes? lateral sulcus longitudinal sulcus insula sulcus centralsulcus Question 4 (1 point) Looking at the sagittal section of the brain, which structure sits superior to the thalamus? occipital lobe hypothalamus corpus callosum frontal lobe

Question 3: What is the name of the sulcus that separates the parietal and frontal lobes?

The answer is the fourth one: central sulcus.

Explanation:

• Lateral sulcus: This separates the temporal lobe from the frontal and parietal lobes, not the parietal and frontal lobes.
• Longitudinal sulcus: This is another name for the longitudinal fissure, which separates the two cerebral hemispheres.
• Insula sulcus: This is not a standard term used to describe any major sulcus in the brain.
• Central sulcus: This is the correct answer as it separates the parietal lobe from the frontal lobe.

Question 4: Looking at the sagittal section of the brain, which structure sits superior to the thalamus?

The answer is the third one: corpus callosum.

Explanation:

• Occipital lobe: This is located at the back of the brain and is not directly superior to the thalamus.
• Hypothalamus: This is located below the thalamus.
• Corpus callosum: This is a thick band of nerve fibers that sits superior to the thalamus, connecting the two cerebral hemispheres.
• Frontal lobe: This is located at the front of the brain and is not directly superior to the thalamus.

In summary, the central sulcus separates the parietal and frontal lobes, and the corpus callosum sits superior to the thalamus in a sagittal section of the brain.