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Pons

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PONS ANATOMY

The pons is responsible for relaying various impulses. The pons is housed within the metencephalon. The cerebellum is also housed within the metencephalon and is responsible for controlling the contraction of skeletal muscles.

Part of the segment of brain known as the hindbrain, the metencephalon is the furthermost superior segment. Within both the metencephalon and the myelencephalon, the mesencephalic aqueduct broadens, becoming the fourth ventricle of the brain.

PONS STRUCTURE

The pons looks like a circular bulge lying on the inferior surface of the brain. It is located aptly between the midbrain and the medulla oblongata. White colored tracts of fiber create the pons, which course in two principle directions. Extending transversely through the middle cerebellar peduncles, the surface fibers reach out to connect with the cerebellum. The deeper longitudinal fibers are an element of the motor and sensory tracts that unite the medulla oblongata with the tracts of the midbrain.

PONS DIAGRAM

Pons
Image: Pons


Impulses which transmit to produce the action of chewing as well as sensory sensation from the head are conducted by the cranial nerves which nave nuclei that are housed within the pons. The abducens are responsible for transmitting the pulses which control various eyeball movements. The facial nuclei are responsible of course for the facial movement and the sensory interpretation regarding the taste buds.


Equilibrium is maintained through the pulsations that are derived via the vestibular branches of the vestibularcochlear nerves and nuclei. All cranial nerves are served by their corresponding nuclei. The rate and depth of each breath if regulated via pulse conduction via the medulla oblongata, which is another variation of the nuclei within the pons’ function. The pons houses two respiratory centers, the apneustic and the pneumotaxic.
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