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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.

HeadNeckThoraxBackAbdomenPelvisTrunkUpper limbHandLower limbFoot

745–768 of 1303

Joints and ligaments · AbdomenObturator membraneMembrana obturatoriaA thin fibrous sheet that closes most of the obturator foramen of the hip bone, leaving a canal at the top through which the obturator nerve and vessels pass.
Nerves · Lower limbObturator nerveNervus obturatoriusA lumbar plexus nerve that runs along the side wall of the pelvis and through the obturator canal to the adductor muscles of the thigh.
Lymphatics · TrunkObturator nodesNodi obturatoriiLymph nodes on the side wall of the lesser pelvis beside the obturator artery and nerve, near the obturator canal.
Arteries · HeadOccipital arteryArteria occipitalisAn external carotid branch that passes back beneath the mastoid process to the rear of the scalp and the upper neck muscles.
Skeleton · HeadOccipital boneOs occipitaleThe single bone at the back and base of the skull, ringing the foramen magnum and resting on the first neck vertebra.
Lymphatics · HeadOccipital nodesNodi occipitalesA few lymph nodes at the back of the head, near the upper edge of trapezius, draining the occipital scalp.
Brain and spinal cord · HeadOccipital polePolus occipitalisThe rounded rear tip of each cerebral hemisphere, at the back end of the occipital lobe above the tentorium cerebelli.
Veins · HeadOccipital sinusSinus occipitalisThe smallest dural venous sinus, running in the attached edge of the falx cerebelli from the foramen magnum up to the confluence of sinuses.
Veins · HeadOccipital veinVena occipitalisA vein of the back of the scalp that drains the occipital region and links with the dural sinuses through emissary veins.
Muscles · HeadOccipitalis muscleMusculus occipitalisThe occipitalis is the thin, four-sided back belly of the scalp muscle, running from the back of the skull to the epicranial aponeurosis.
Nerves · HeadOculomotor nerve (III)Nervus oculomotorius (III)The third cranial nerve, running from the midbrain to the orbit to move most eye muscles, lift the upper lid and narrow the pupil.
Organs · ThoraxOesophagusThe muscular tube that carries swallowed food and drink from the pharynx, through the chest and diaphragm, to the stomach.
Nerves · HeadOlfactory nerve (I)Nervus olfactorius (I)The first cranial nerve: fine bundles carrying smell from the roof of the nasal cavity through the ethmoid bone to the olfactory bulb.
Brain and spinal cord · HeadOlfactory sulcusSulcus olfactoriusA straight groove on the underside of each frontal lobe, parallel to the midline, in which the olfactory bulb and tract lie.
Brain and spinal cord · HeadOliveOlivaAn oval swelling on the front of the medulla oblongata, beside the pyramid, produced by the inferior olivary nucleus beneath it.
Muscles · NeckOmohyoid muscleMusculus omohyoideusOmohyoid is a thin two-bellied strap muscle of the neck that runs from the scapula's upper edge to the hyoid bone.
Brain and spinal cord · HeadOpercular part of inferior frontal gyrusPars opercularis gyri frontalis inferiorisThe hindmost section of the inferior frontal gyrus, lying in front of the precentral gyrus and covering part of the insula.
Arteries · HeadOphthalmic arteryArteria ophthalmicaAn internal carotid branch, given off just beyond the cavernous sinus, that enters the orbit with the optic nerve to supply the eye.
Nerves · HeadOphthalmic nerveNervus ophthalmicusThe smallest, uppermost trigeminal division, sensory to the eye, upper eyelid, forehead, scalp and part of the nose.
Muscles · Upper limbOpponens digiti minimi muscle of handMusculus opponens digiti minimi manusOpponens digiti minimi is the deepest hypothenar muscle, rolling the little finger metacarpal forward to cup the palm.
Muscles · Upper limbOpponens pollicis muscleMusculus opponens pollicisOpponens pollicis is a thenar muscle at the base of the thumb that turns the thumb across the palm to meet the fingers.
Brain and spinal cord · HeadOptic chiasmChiasma opticumThe X-shaped junction below the hypothalamus where the two optic nerves meet and their nasal fibres cross to the opposite side.
Nerves · HeadOptic nerve (II)Nervus opticus (II)The second cranial nerve, a bundle of axons from the retina running through the optic canal to the optic chiasm.
Brain and spinal cord · HeadOptic tractTractus opticusThe band of visual fibres running back from the optic chiasm round the cerebral peduncle to the lateral geniculate body.