The Anthromica Library
The human body one structure at a time. Every page has a 3D model you can turn, with its parts numbered on it, where it sits, what it does and what supplies it.
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- MidbrainMesencephalonThe short, uppermost part of the brainstem, between the diencephalon above and the pons below, carrying the cerebral aqueduct.
- Middle cerebral artery (M1-segment)Arteria cerebri media (Pars M1)The first, sphenoidal stretch of the middle cerebral artery, running laterally from the carotid split to the entrance of the lateral sulcus.
- Middle cerebral artery (M3-segment)Arteria cerebri media (Pars M3)The opercular segment of the middle cerebral artery, its branches looping around the opercula from the insula to the lateral surface.
- Middle frontal gyrusGyrus frontalis mediusThe broad middle band of the three horizontal gyri on the lateral surface of the frontal lobe, between the superior and inferior frontal sulci.
- Middle meningeal arteryArteria meningea mediaA maxillary artery branch that passes through the foramen spinosum into the skull, supplying the dura and the bones of the vault.
- Middle temporal gyrusGyrus temporalis mediusThe middle of the three long gyri on the lateral surface of the temporal lobe, between the superior and inferior temporal sulci.
- Motor nucleus of facial nerveNucleus nervi facialisThe cluster of motor neurons in the lower pons whose axons form the facial nerve's motor root and move the face.
- Motor root of trigeminal nerveRadix motoria nervi trigeminiThe small motor root of the trigeminal nerve, leaving the side of the pons and joining the mandibular nerve to supply the chewing muscles.
- Mylohyoid branch of inferior alveolar arteryRamus mylohyoideus arteriae alveolaris inferiorisA small branch of the inferior alveolar artery that runs in the mylohyoid groove of the mandible to the mylohyoid muscle.
- Nasal boneOs nasaleOne of a pair of small oblong bones that meet in the midline to build the bony bridge of the nose.
- Nasal septal cartilageCartilago septi nasiThe four-sided plate of hyaline cartilage forming the front of the nasal septum between the two nasal cavities.
- Nasalis muscleMusculus nasalisThe nasalis is the main nose muscle: a transverse part compresses the nasal cartilages and an alar part flares the nostrils.
- Nasolabial nodeNodus nasolabialisA small facial lymph node in the fold between the side of the nose and the upper lip, along the facial vein.
- Nasolacrimal ductDuctus nasolacrimalisThe membranous tube leading tears downwards from the lacrimal sac through a bony canal to open into the inferior meatus of the nose.
- Nerve to mylohyoid muscleNervus mylohyoideusA small motor branch of the inferior alveolar nerve that supplies mylohyoid and the anterior belly of digastric.
- Nodule of vermisNodulus vermisThe front end of the inferior vermis, jutting into the fourth ventricle's roof and forming the midline part of the flocculonodular lobe.
- Nucleus ambiguusA column of motor neurons deep in the lateral medulla that drives the muscles of the palate, pharynx and larynx and slows the heart.
- Nucleus of abducens nerveNucleus nervi abducentisA motor nucleus in the lower pons beneath the fourth ventricle that drives the lateral rectus and coordinates sideways gaze of both eyes.
- Nucleus of accessory nerveNucleus nervi accessoriiA column of motor neurons in the upper cervical spinal cord whose axons form the accessory nerve to sternocleidomastoid and trapezius.
- Nucleus of hypoglossal nerveNucleus nervi hypoglossiA column of motor neurons near the midline of the medulla, under the fourth ventricle, whose axons form the hypoglossal nerve to the tongue.
- Nucleus of oculomotor nerveNucleus nervi oculomotoriusThe main motor nucleus of the third cranial nerve, a paired cell column in the upper midbrain that moves most eye muscles.
- Nucleus of solitary tractNucleus tractus solitariiA long sensory nucleus in the dorsal medulla that receives taste and visceral information through the seventh, ninth and tenth cranial nerves.
- Nucleus of trochlear nerveNucleus nervi trochlearisA small motor nucleus in the lower midbrain whose axons cross and leave the back of the brainstem as the trochlear nerve to superior oblique.
- Occipital arteryArteria occipitalisAn external carotid branch that passes back beneath the mastoid process to the rear of the scalp and the upper neck muscles.