Where is superior medullary velum?

Where is superior medullary velum?

Object: The superior medullary velum (SMV) is a thin lamina of white matter located between the superior cerebellar peduncles horizontally and between the midbrain and cerebellum vertically.

What is the function of superior medullary velum?

A slightly elevated ridge, the frenulum veli, descends upon its upper part from between the inferior colliculi, and on either side of this the trochlear nerve emerges. Blood is supplied by branches from the superior cerebellar artery….

How are the superior and inferior medullary velum related to the fourth ventricle?

The superior medullary velum is located on the midline, between both superior cerebellar peduncles. Inferior roof of the fourth ventricle: In contrast to the superior roof, the inferior roof of the fourth ventricle is formed mainly by two thin membranes, the tela choroidea and the inferior medullary velum.

Which cranial nerve crosses superior medullary velum?

The trochlear nerve
The trochlear nerve is unique among cranial nerves in that it decussates to the contralateral side (through the superior medullary velum that forms the roof of the fourth ventricle), and its point of exit is through the dorsal surface of the brain.

What is meant by medullary velum?

Medical Definition of medullary velum : a thin white plate of nervous tissue forming part of the roof of the fourth ventricle.

What is inferior medullary velum?

The inferior (or posterior) medullary velum is a thin sheet of tissue formed by ependyma and the pia mater of the tela choroidea.

What does the medulla control in the brain?

The medulla oblongata plays a critical role in transmitting signals between the spinal cord and the higher parts of the brain and in controlling autonomic activities, such as heartbeat and respiration.

What is superior and inferior medullary velum?

The superior (or anterior) medullary velum is a thin layer of tissue that is suspended between the superior cerebellar peduncles forming the roof of the fourth ventricle along with the inferior medullary velum. It is enclosed by pia mater dorsally and ependyma ventrally.

Which cranial nerve exits the brain on the side of the Frenum of the superior cerebral velum?

trochlear nerves
The trochlear nerves (avulsed from this specimen) emerge (thin white arrow) from the superior medullary velum just inferior to the inferior colliculi and just lateral to the frenulum veli.

Where is inferior medullary velum?

Anatomical terms of neuroanatomy The inferior medullary velum (posterior medullary velum) is a thin layer of white substance, prolonged from the white center of the cerebellum, above and on either side of the nodule; it forms the infero-posterior part of the fourth ventricle.

How do I keep my medulla oblongata healthy?

Exercise regularly: Not only is exercise good for your overall health, but it also helps to stimulate blood flow to your brain. Eat a healthy diet: All parts of your body can benefit from a healthy diet. Focus on fresh fruits and vegetables, whole grains, nuts, seeds, fish, and lean meat.

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