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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- HypothalamusA small region of the diencephalon below the thalamus that controls the pituitary gland and the body's internal balance.
- Inferior alveolar arteryArteria alveolaris inferiorA branch of the maxillary artery that enters the mandible and runs in its canal to supply the lower teeth, jaw and chin.
- Inferior alveolar nerveNervus alveolaris inferiorThe large mandibular nerve branch running through the lower jaw's canal, supplying the lower teeth, the chin and the lip below.
- Inferior colliculusColliculus inferiorThe lower pair of rounded swellings on the back of the midbrain, the main relay of the ascending auditory pathway.
- Inferior frontal sulcusSulcus frontalis inferiorA groove on the outer surface of the frontal lobe that runs forwards from the precentral sulcus and divides the middle frontal gyrus from the inferior frontal gyrus.
- Inferior head of lateral pterygoid muscleCaput inferius musculi pterygoidei lateralisThe inferior head of the lateral pterygoid is the larger part of this jaw-opening muscle, from pterygoid plate to mandibular neck.
- Inferior labial arteryArteria labialis inferiorAn offshoot of the facial artery running along the lower lip between its muscle and lining, supplying the lip.
- Inferior labial veinsVenae labiales inferioresSmall veins of the lower lip and chin that carry blood into the facial vein near the corner of the mouth.
- Inferior nasal concha boneConcha nasalis inferiorA curled scroll of thin bone on the lower side wall of each nasal cavity, the largest of the three conchae and a facial bone in its own right.
- Inferior oblique muscleMusculus obliquus inferior bulbi oculiThe inferior oblique is a thin eye muscle at the front of the orbital floor that rotates the eyeball outwards and lifts its gaze.
- Inferior ophthalmic veinVena ophthalmica inferiorA vein of the lower orbit that drains muscles and tissues below the eye towards the cavernous sinus and the pterygoid plexus.
- Inferior petrosal sinusSinus petrosus inferiorA paired dural venous sinus on the skull base, carrying blood from the cavernous sinus to the internal jugular vein.
- Inferior rectus muscleMusculus rectus inferiorThe inferior rectus is the straight muscle under the eyeball that runs from the back of the orbit and turns the gaze downwards.
- Inferior sagittal sinusSinus sagittalis inferiorA small midline dural venous sinus running along the free lower edge of the falx cerebri, above the corpus callosum.
- Inferior salivatory nucleusNucleus salivatorius inferiorA small group of parasympathetic nerve cells in the upper medulla that drive secretion from the parotid gland through the glossopharyngeal nerve.
- Inferior semilunar lobuleLobulus semilunaris inferiorA large crescent-shaped lobule of each cerebellar hemisphere, lying just below the horizontal fissure on the back of the inferior surface.
- Inferior tarsusTarsus inferiorThe thin plate of dense connective tissue that stiffens the lower eyelid, lying just above its free margin.
- Inferior temporal gyrusGyrus temporalis inferiorThe lowest of the three long gyri on the side of the temporal lobe, curving onto its underside and serving visual object recognition.
- Inferior temporal sulcusSulcus temporalis inferiorA long groove low on the side of the temporal lobe, separating the middle temporal gyrus above from the inferior temporal gyrus below.
- Infra-auricular nodesNodi infraauricularesA small cluster of parotid lymph nodes lying just below the ear lobe, at the lower pole of the parotid gland near the jaw angle.
- Infra-orbital arteryArteria infraorbitalisA branch of the maxillary artery that runs in the floor of the orbit and emerges on the face below the eye.
- Insular branches of middle cerebral artery (M2)Arteriae insulares (M2)The branches of the middle cerebral artery that run over the insula, deep in the lateral sulcus, forming its second (M2) segment.
- Internal carotid arteryCarotis internaThe main artery to the brain and eye, rising from the common carotid and reaching the skull by the carotid canal.
- Interpeduncular fossaFossa interpeduncularisA diamond-shaped hollow on the base of the brain between the cerebral peduncles, behind the optic chiasm and in front of the pons.