Brain

The Fourth Ventricle Question 1. Define the 4th ventricle and discuss its boundaries, communications, and recesses. Answer. The 4th ventricle is a tent-like cavity of the hindbrain lined with ependyma. It lies behind the pons and medulla and in front of the cerebellum. Fourth ventricle 4th Ventricle Boundaries Lateral (on each side): Superolaterally by the … [Read more...] about The Fourth Ventricle

Rhomboid Fossa Question 1. Discuss the features of the rhomboid fossa in brief. Answer. The features of the rhomboid fossa are as follows: Stria medullaris It is rhomboidal in shape and has four angles: rostral, caudal and two lateral. The floor is divided into two halves by a median sulcus. Each half of the floor is further divided into two parts (pontine and … [Read more...] about Rhomboid Fossa

Central Sulcus Question 1. Name the sulci that help in demarcating the superolateral surface of the cerebral hemisphere into four lobes. Discuss the central sulcus in detail. Answer. The sulci help in demarcating the superolateral surface of the cerebral hemisphere into four lobes: Central sulcus Lateral sulcus (posterior ramus) Parieto-occipital sulcus (terminal … [Read more...] about Central sulcus

Lobes Of The Brain Question 1. Discuss the demarcation of lobes of the cerebral hemisphere on its superolateral surface. Answer: The superolateral surface of the cerebral hemisphere is demarcated into four lobes as follows: Lobes of the brain Frontal lobe: It lies anterior to the central sulcus and above the lateral sulcus. It is so named because it is related to the … [Read more...] about Lobes Of The Brain

The Anatomy Of The Cerebral Cortex Question 1. Write a short note on the insula. Answer. The insula is a submerged portion of the cerebral cortex on the floor of the lateral sulcus. It is hidden from surface view by overgrown adjacent areas of frontal, parietal, and temporal lobes called opercula/lids. It is triangular and surrounded by a circular sulcus. It is … [Read more...] about The Anatomy Of The Cerebral Cortex