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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- Ileocolic nodesNodi ileocoliciLymph nodes along the ileocolic artery, draining the terminal ileum, caecum, appendix and start of the ascending colon.
- Iliacus branch of iliolumbar arteryRamus iliacus arteriae iliolumbalisThe lower terminal branch of the iliolumbar artery, running into the iliac fossa to feed the iliacus muscle and the ilium.
- Iliacus muscleMusculus iliacusIliacus is the flat, triangular muscle lining the iliac fossa inside the pelvis, joining psoas major to flex the hip.
- Ilio-inguinal nerveNervus ilioinguinalisA slender L1 branch that crosses the back abdominal wall and passes through the inguinal canal to the groin.
- Iliococcygeus muscleMusculus iliococcygeusIliococcygeus is the thin, hindmost sheet of levator ani, stretched from the side wall of the pelvis to the coccyx.
- Iliocostalis colli muscleMusculus iliocostalis colliIliocostalis colli is the uppermost part of the iliocostalis column, linking the upper rib angles to the lower cervical transverse processes.
- Iliocostalis lumborum muscleMusculus iliocostalis lumborumIliocostalis lumborum is the lumbar part of the outermost column of erector spinae, running from the pelvis and sacrum to the lower ribs.
- Iliocostalis thoracis muscleMusculus iliocostalis thoracisIliocostalis thoracis is the middle part of the outer erector spinae column, joining the lower rib angles to the upper rib angles.
- Iliohypogastric nerveNervus iliohypogastricusThe uppermost branch of the lumbar plexus, curving around the abdominal wall to supply the skin of the lateral buttock and the lower abdomen.
- Iliolumbar arteryArteria iliolumbalisA paired branch of the internal iliac artery that climbs out of the pelvis behind psoas major to supply the iliac fossa and lower lumbar region.
- Iliolumbar ligamentLigamentum iliolumbaleA strong band on each side joining the fifth lumbar transverse process to the back of the iliac crest.
- Iliolumbar veinVena iliolumbalisA paired vein of the posterior abdominal wall that accompanies the iliolumbar artery and drains the iliac fossa and lower lumbar region.
- Iliopectineal archArcus iliopectineusThe iliopectineal arch is a thickened band of iliac fascia under the inguinal ligament that divides the space into muscular and vascular compartments.
- Iliotibial tractTractus iliotibialisThe iliotibial tract is the thick band of deep fascia running down the outer side of the thigh from the iliac crest to the tibia.
- 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 deep lateral cervical nodesNodi cervicales laterales profundi inferioresThe lower part of the deep chain of neck lymph nodes, along the internal jugular vein below the crossing of omohyoid.
- Inferior diaphragmatic nodesNodi phrenici inferioresSmall lymph nodes on the abdominal surface of the diaphragm, near the aortic hiatus along the inferior phrenic arteries.
- Inferior epigastric arteryArteria epigastrica inferiorA paired branch of the external iliac artery that climbs the inner surface of the lower anterior abdominal wall within the rectus sheath.
- Inferior epigastric nodesNodi epigastrici inferioresA few lymph nodes beside the inferior epigastric vessels on the inner surface of the lower anterior abdominal wall.
- Inferior epigastric veinVena epigastrica inferiorA paired vein of the lower anterior abdominal wall that rises with the inferior epigastric artery and empties into the external iliac vein.
- 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 gemellus muscleMusculus gemellus inferiorThe inferior gemellus is a small deep hip muscle that runs from the ischial tuberosity to the greater trochanter beside obturator internus.