pons

pons (ponz) pl. pon´tes   [L.]

1. any slip of tissue connecting two parts of an organ.

2. that part of the central nervous system lying between the medulla oblongata and the midbrain, ventral to the cerebellum; see brainstem.

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pons he´patis  an occasional projection partially bridging the longitudinal fissure of the liver.

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pons (pnz)

n. pl. pon·tes (pntz)

1. The part of the brainstem that is intermediate between the medulla oblongata and the mesencephalon and is composed of a ventral part and the tegmentum.

2. A bridgelike formation connecting two disjoined parts of a structure or organ.

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pons

[ponz] pl. pontes

Etymology: L, bridge

1 also called bridge of Varolius. a prominence on the ventral surface of the brainstem, between the medulla oblongata and the cerebral peduncles of the midbrain. The pons consists of white matter and a few nuclei and is divided into a ventral part and a dorsal part. The ventral part consists of transverse fibers separated by longitudinal bundles and small nuclei. The dorsal part comprises the tegmentum, which is a continuation of the reticular formation of the medulla containing the nucleus of the abducens nerve, the nucleus of the facial nerve, the motor nucleus of the trigeminal nerve, the sensory nuclei of the trigeminal nerve, the nucleus of the cochlear division of the eighth nerve, the superior olive, and the nuclei of the vestibular division of the eighth nerve.

2 any slip of tissue connecting two parts of a structure or an organ of the body. pontine, pontile, adj,

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pons (ponz),

n a structure dorsal to the medulla and intimately related to the pathways to the cerebrum. The cranial nerves whose nuclei lie in the pons are the trigeminal, abducens, and facial nerves, and part of the acoustic nerve. It is intimately related to the medulla, has the same blood vessel supply, and is involved in many lesions that affect the medulla. It is especially involved with the cerebellar manifestations of disease and may cause serious muscular incoordination in motor function of the head, neck, and facial structures.

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pons

1. that part of the metencephalon lying between the medulla oblongata and the midbrain, ventral to the cerebellum. See also brainstem.

2. slip of tissue connecting two parts of an organ.

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pons varolii

pons (1).