| medial plate of pterygoid process | The smaller and more medial of the two bony plates extending downward from the point of union of the body and greater wing of the sphenoid bone on either side. Ending inferiorly in the pterygoid hamulus. Synonym: lamina medialis processus pterygoidei, medial plate of pterygoid process. (05 Mar 2000) |
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| medial pole of ovary | The rounded medial end of the ovary, usually directed toward the uterus. Synonym: extremitas uterina ovarii, medial pole of ovary. (05 Mar 2000) |
| medial popliteal nerve | <anatomy, nerve> The medial terminal branch of the sciatic nerve. The tibial nerve fibres originate in lumbar and sacral spinal segments (l4 to s2). They supply motor and sensory innervation to parts of the calf and foot. (12 Dec 1998) |
| medial preoptic nucleus | A group of nerve cells forming the medial zone of the preoptic region. Synonym: nucleus preopticus medialis. (05 Mar 2000) |
| medial process of calcaneal tuberosity | The medial projection from the posterior part of the calcaneus. Synonym: processus medialis tuberis calcanei. (05 Mar 2000) |
| medial pterygoid | <anatomy, muscle> Origin, pterygoid fossa of sphenoid and tuberosity of maxilla; insertion, medial surface of mandible between angle and mylohyoid groove; action, elevates mandible closing jaw; nerve supply, nerve to medial pterygoid from mandibular division of trigeminal. Synonym: musculus pterygoideus medialis, internal pterygoid muscle, musculus pterygoideus internus. (05 Mar 2000) |
| medial pterygoid plate | The smaller and more medial of the two bony plates extending downward from the point of union of the body and greater wing of the sphenoid bone on either side. Ending inferiorly in the pterygoid hamulus. Synonym: lamina medialis processus pterygoidei, medial plate of pterygoid process. (05 Mar 2000) |
| medial puboprostatic ligament | See: puboprostatic ligament. Synonym: medial puboprostatic ligament. (05 Mar 2000) |
| medial rectus | <anatomy, muscle> Origin, medial part of the anulus tendineus communis; insertion, medial part of sclera of the eye; action, adduction; nerve supply, oculomotor. Synonym: musculus rectus medialis, musculus rectus internus. (05 Mar 2000) |
| medial root of median nerve | <anatomy, nerve> The part of the median nerve coming from the medial cord of the brachial plexus. Synonym: radix medialis nervi mediani. (05 Mar 2000) |
| medial root of optic tract | The smaller division of the posterior end of the optic tract that disappears under the medial geniculate body. Synonym: radix medialis tractus optici. (05 Mar 2000) |
| medial rotator | A muscle that turns a part medialward. See: invertor. Synonym: medial rotator. (05 Mar 2000) |
| medial segment | A delimited part or section of an organ or other structure which lies closer or closest to the midline than the other similar parts or sections. 1) segmentum mediale (hepar); the medial segment of the left lobe of the liver. 2) segmentum mediale (pulmo dexter); [S 5]; the medial segment of the middle lobe of the right lung. Synonym: segmentum mediale. (05 Mar 2000) |
| medial striate artery | <anatomy, artery> Arises at or just distal to the anterior communicating artery; distribution: anterior caudate and putamen and anterior limb of internal capsule. Synonym: arteria centralis longa, arteria recurrens, artery of Heubner, long central artery, recurrent artery of Heubner, recurrent artery. (05 Mar 2000) |
| medial sulcus of crus cerebri | A groove in the lateral wall of the interpeduncular fossa of the midbrain from which the rootlets of the oculomotor nerve emerge. Synonym: sulcus medialis cruris cerebri, sulcus nervi oculomotorii, sulcus of the oculomotor nerve. (05 Mar 2000) |