Brain

Brain – Arterial Supply Question 1. Write a short note on the basilar artery. Give its branches. Answer. Formation and termination It is formed by the two vertebral arteries at the lower border of the pons. It runs upwards and forwards in the midline groove on the ventral aspect of the pons. On reaching the upper border of the pons, it divides into right and … [Read more...] about Brain – Arterial Supply

Vascular Territories Of The Brain Question 1. Describe briefly the arterial supply of the inferomedial surface of the cerebral hemisphere. Answer. Medial surfaces of the frontal and parietal lobes are supplied by the anterior cerebral artery. Medial surfaces of the occipital and most of the temporal lobes (except the temporal pole) are supplied by the posterior … [Read more...] about Vascular Territories Of The Brain

Cerebral White Matter Question 1. Define white matter and discuss its various types. Answer. The white matter of the cerebrum is made up of myelinated nerve fibres, which connect various parts of the cerebral cortex on the same side, with the opposite side and also with the other parts of the CNS. Types of white fibres. There are three types of white fibres in the … [Read more...] about Cerebral White Matter

Cerebral Cortex Question 1. Write a short note on the anterior commissure. Answer. The anterior commissure is a small, round bundle of commissural fibres that crosses the midline in the upper part of the lamina terminalis. It consists of two components: A large, posterior neocortical component, which interconnects the cortical areas of the lower and anterior parts of … [Read more...] about Cerebral Cortex

Internal Capsule Question 1. Describe the internal capsule under the following headings: Definition and location, Gross anatomy, Fibres, Arterial supply and Applied anatomy. Answer: Internal Capsule Definition and Location The internal capsule is a compact bundle of projection fibres lying in the inferomedial part of the cerebral hemisphere. Hence, … [Read more...] about Internal Capsule