| PION | posterior ischemic optic neuropathy |
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| PIP | paralytic infantile paralysis; peak inflation pressure, peak inspiratory pressure; periodic interim ... |
| PLD | peripheral light detection; phospholipase D; platelet defect; polycystic liver disease; posterior la... |
| PLF | perilymphatic fistula; posterior lung fiber |
| PLL | peripheral light loss; phase-locked loop; poly-L-lysine; pressure length loop; posterior longitudina... |
| perineal branches of posterior femoral cutaneous nerve | <anatomy, nerve> Branches of posterior femoral cutaneous nerve which convey sensory fibres to the skin of the lateral-most perineum and adjacent portions of the upper medial thigh. Synonym: rami perineales nervi cutanei femoris posterioris. (05 Mar 2000) |
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| greater posterior rectus muscle of head | <anatomy, muscle> Origin, spinous process of axis; insertion, middle of inferior nuchal line of occipital bone; action, rotates and draws head backward; nerve supply, dorsal branch of first cervical (suboccipital). See: suboccipital muscles. Synonym: musculus rectus capitis posterior major, greater posterior rectus muscle of head, musculus rectus capitis posticus major. (05 Mar 2000) |
| groove for tibialis posterior tendon | A broad groove on the posterior surface of the medial malleolus, through which the tendon of the tibialis posterior muscle runs. Synonym: sulcus malleolaris, malleolar sulcus. (05 Mar 2000) |
| persistent posterior hyperplastic primary vitreous | A unilateral congenital anomaly in full-term infants; associated with a congenital retinal fold and a vitreous membranous stalk containing remnants of the hyaloid artery. (05 Mar 2000) |
| collateral branches of posterior intercostal arteries 3-11 | Branch arising near angle of rib and descending to run along superior border of rib below; distribution: lower half of intercostal spaces 3-11; anastomoses: collateral branches of anterior intercostal arteries. Synonym: ramus collateralis arteriarum intercostalium posteriorum III-XI. (05 Mar 2000) |
| pituitary gland, posterior | The neural or post-neural lobe of the pituitary gland. (12 Dec 1998) |
| pituitary hormones, posterior | Hormones released from the posterior lobe of the pituitary, including vasopressin (antidiuretic hormone) and oxytocin. They are formed in the neuronal cells of the hypothalamic nuclei and stored in nerve cell endings in the posterior pituitary (neurohypophysis). (12 Dec 1998) |
| columna posterior | The pronounced, dorsolaterally oriented ridge of gray matter in each lateral half of the spinal cord, corresponding to the posterior or dorsal horn appearing in transverse sections of the cord. Synonym: columna posterior, dorsal column of spinal cord, posterior column of spinal cord. (05 Mar 2000) |
| commissura labiorum posterior | A slight fold uniting the labia majora posteriorly in front of the anus. Synonym: commissura labiorum posterior. (05 Mar 2000) |
| commissura posterior cerebri | A thin band of white matter, crossing from side to side beneath the habenula of the pineal body and over the aditus ad aqueductum cerebri; it is largely composed of fibres interconnecting the left and right pretectal region and related cell groups of the midbrain; dorsally, it marks the junction of the diencephalon and mesencephalon. Synonym: posterior cerebral commissure. (05 Mar 2000) |
| commissura posterior grisea | central and lateral intermediate substance |
| plexus auricularis posterior | An autonomic plexus on the artery of this name, derived from the external carotid plexus. Synonym: plexus auricularis posterior. (05 Mar 2000) |
| musculus auricularis posterior | <anatomy, muscle> Origin, mastoid process; insertion, posterior portion of root of auricle; action, draws back the pinna; nerve supply, facial. Synonym: musculus auricularis posterior, musculus retrahens aurem, musculus retrahens auriculam. (05 Mar 2000) |
| musculus cricoarytenoideus posterior | <anatomy, muscle> Origin, depression on posterior surface of lamina of cricoid; insertion, muscular process of arytenoid; action, abducts vocal folds, widening rima glottidis as for taking a breath; nerve supply, recurrent laryngeal. Synonym: musculus cricoarytenoideus posterior. (05 Mar 2000) |
| musculus rectus capitis posterior major | <anatomy, muscle> Origin, spinous process of axis; insertion, middle of inferior nuchal line of occipital bone; action, rotates and draws head backward; nerve supply, dorsal branch of first cervical (suboccipital). See: suboccipital muscles. Synonym: musculus rectus capitis posterior major, greater posterior rectus muscle of head, musculus rectus capitis posticus major. (05 Mar 2000) |