posterior auricular nerve n.
A branch of the facial nerve, which supplies the posterior auricular and intrinsic muscles of the auricle and, through its occipital branch, innervates the occipital belly of the occipitofrontal muscle.
- Posterior auricular vein
posterior auricular vein n. A tributary to the external jugular vein, draining the region behind the ear.
- Posterior cardinal vein
posterior cardinal vein n. Any of the major drainage channels from the caudal part of an embryo.
- Posterior cerebral commissure
posterior cerebral commissure n. A thin band of white matter crossing from side to side beneath the habenula of the pineal body and over the entrance to the cerebral aqueduct and largely composed of fibers connecting mesoencephalic regions.
- Posterior chamber of eye
posterior chamber of eye n. The ringlike space filled with aqueous humor between the iris, the crystalline lens, and the ciliary body.