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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- Septal branches of posterior ethmoidal arteryRami septales arteriae ethmoideae posteriorisSmall branches of the posterior ethmoidal artery that descend through the cribriform plate to the upper back part of the nasal septum.
- Septal nucleiNuclei septalesA group of grey matter nuclei in the septal area below the front of the corpus callosum, linked to the hippocampus, hypothalamus and habenula.
- Septum pellucidumA thin, vertical, two-layered partition in the brain's midline that separates the front horns of the two lateral ventricles.
- Short posterior ciliary arteriesArteriae ciliares posteriores brevesNumerous small branches of the ophthalmic artery that pierce the sclera around the optic nerve to supply the choroid and optic disc.
- Sigmoid sinusSinus sigmoideusAn S-shaped dural venous sinus on the inside of the skull behind the ear, carrying blood from the transverse sinus to the jugular foramen.
- Sinus of frontal boneSinus ossis frontalisThe pair of air-filled spaces inside the frontal bone behind the brow ridges, draining down into the middle meatus of the nose.
- Sinus of sphenoid boneSinus ossis sphenoideiThe pair of air spaces inside the sphenoid's body, deep behind the nose and just below the pituitary gland.
- Sphenoid boneOs sphenoideumThe unpaired, butterfly-shaped bone across the centre of the skull base, linking the braincase to the face and cradling the pituitary gland.
- Sphenomandibular ligamentLigamentum sphenomandibulareA thin flat band beside the jaw joint, running from the spine of the sphenoid down to the lingula of the mandible.
- Straight gyrus (Gyrus rectus)The narrow, straight convolution along the medial edge of the underside of the frontal lobe, beside the longitudinal fissure.
- Straight sinusSinus rectusA midline dural venous sinus along the junction of the falx cerebri and tentorium, draining the deep brain to the back of the head.
- Stria medullaris thalamiA slender band of white fibres along the upper medial edge of the thalamus, running back to the habenula in the epithalamus.
- Stria terminalisA curved band of fibres running from the amygdala along the floor of the lateral ventricle, in the groove between the caudate nucleus and thalamus.
- Stylohyoid ligamentLigamentum stylohyoideumA fibrous cord in the side of the neck running from the tip of the styloid process to the lesser horn of the hyoid.
- Stylomandibular ligamentLigamentum stylomandibulareA fascial band below the ear stretching from the styloid process to the angle and back edge of the mandible.
- Submandibular nodesNodi submandibularesA group of lymph nodes under the lower jaw, in the submandibular triangle, lying on the submandibular gland.
- Submental arteryArteria submentalisThe largest neck branch of the facial artery, running forward on mylohyoid below the mandible to supply the chin and floor of the mouth.
- Submental nodesNodi submentalesA few lymph nodes under the chin, between the two anterior digastric bellies and above the hyoid bone.
- Submental veinVena submentalisA vein under the chin that follows the submental artery along the floor of the mouth and drains into the facial vein.
- Subparietal sulcusSulcus subparietalisA groove on the inner face of each hemisphere above the splenium, separating the precuneus from the posterior cingulate gyrus.
- Superficial parotid nodesNodi parotidei superficialesLymph nodes lying on the outer surface of the parotid gland, under its fascia, in front of the ear.
- Superficial part of masseterPars superficialis masseterisThe superficial part of the masseter is the larger outer layer of this chewing muscle, from cheekbone to jaw angle.
- Superficial temporal arteryArteria temporalis superficialisThe smaller terminal branch of the external carotid artery, climbing in front of the ear to supply the side of the scalp and forehead.
- Superficial temporal veinsVenae temporales superficialesA scalp vein at the side of the head that runs down in front of the ear into the parotid gland.