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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

Corpus Callosum Question 1. Enumerate the various commissures of the brain. Answer: The important commissures of the brain: Corpus callosum Anterior commissure Posterior commissure Hippocampal commissure Habenular commissure Corpus callosum Question 2. Describe the corpus callosum under the following headings: Definition, Parts, The … [Read more...] about Corpus Callosum

Musculocutaneous Nerve Question 1. Describe the musculocutaneous nerve in brief. Answer. The musculocutaneous nerve, as its name implies, supplies the muscles of the front of the arm and skin on the lateral side of the forearm. Musculocutaneous Nerve Origin From the lateral cord of the brachial plexus (C5, C6, and C7). Musculocutaneous … [Read more...] about Musculocutaneous Nerve