See Also: ventral primary ramus of spinal nerve(medicine)
ventral primary rami of cervical spinal nerves(medicine)
ventral primary rami of lumbar spinal nerves(medicine)
ventral primary rami of sacral spinal nerves(medicine)
dorsal primary ramus of spinal nerve(medicine)
base of skull(medicine)
skull base(medicine)
skull base neoplasms(medicine)
external base of skull(medicine)
internal base of skull(medicine)

ventral primary ramus of spinal nerve (medicine) and base of skull (medicine)


ventral primary ramus of spinal nerve (medicine)


ventral primary ramus of spinal nerve
<anatomy, nerve> The larger, anterolaterally-directed major terminal branch (with the dorsal primary ramus) of all 31 pairs of mixed spinal nerves, formed at the intervertebral foramen. Most ventral primary rami, especially those involved in the innervation of the limbs, participate in the formation of the major nerve plexuses (cervical, brachial, and lumbosacral) and lose their identities. Most in the thoracic region, however, remain separate from adjacent rami to become the intercostal and subcostal nerves. Ventral primary rami provide innervation to the anterolateral body wall and trunk. Nomina Anatomica lists ventral primary rami as "rami ventrales" for each group of spinal nerves: 1) cervical (nervorum cervicalium ), 2) thoracic (nervorum thoracicorum ), 3) lumbar (nervorum lumbalium ), 4) sacral (nervorum sacralium )m, and 5) coccygeal (nervi coccygei ).

Synonym: ramus ventralis nervi spinalis, anterior primary division.


base of skull (medicine)


base of skull


The sloping floor of the cranial cavity. It comprises both the external base of skull (external view) and the internal base of skull (internal view).

See: internal base of skull.

Synonym: basis cranii, cranial base.