Medical – Anatomy System – Human Body Anatomy diagram and chart images

Posterior Interosseous Artery Radial Nerve Supintor Diagram

The posterior interosseous artery arises from common interosseous (from ulnar), runs with posterior interosseous nerve through supinator, supplies posterior forearm extensors. The supinator muscle wraps radius, innervated by deep radial…

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Borders and Contents of the Adductor Canal Diagram

The Borders and Contents of the Adductor Canal diagram defines this subsartorial tunnel from apex of femoral triangle to adductor hiatus: roof (sartorius), anterolateral (vastus medialis), posteromedial (adductors longus/magnus). Contents…

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Laparoscopic Cholecystectomy Diagram

This Laparoscopic Cholecystectomy diagram shows the key steps of gallbladder removal using small incisions and a camera. It highlights where the trocars go, the tools in action, and important structures…

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Recurrent Branch of Median Nerve Diagram

Recurrent branch of median nerve arises distal to carpal tunnel, loops around flexor pollicis brevis to supply thenar muscles (abductor pollicis brevis, opponens pollicis, superficial flexor pollicis brevis head). Its…

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Development of the Bladder Ureter Mesonephric Duct Diagram

The Development of the Bladder Ureter Mesonephric Duct diagram traces embryonic stages where the mesonephric (Wolffian) duct gives rise to the ureteric bud, which induces metanephric blastema for kidney formation…

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Overview of the Anatomical Distribution of the Trigeminal Nerve and its Terminal Branches Diagram

Trigeminal nerve distribution covers face via ophthalmic (V1: forehead, eye, nose), maxillary (V2: cheek, upper lip/teeth, maxillary sinus), mandibular (V3: lower jaw, lower teeth, anterior tongue, muscles of mastication). Terminal…

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Subdivisions of the Posterior Triangle of the Neck Subclavian Triangle and Occipital Triangle Diagram

Posterior triangle subdivisions: occipital triangle (above inferior omohyoid) contains accessory nerve, transverse cervical vessels; subclavian (below) contains brachial plexus trunks, subclavian vessels.

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Neurulation Development of the Central Nervous System Diagram

Neurulation forms the CNS from neural plate (ectoderm thickening) folding into neural groove, then neural tube by fusion of neural folds. Anterior neuropore closes first (day 25), posterior last (day…

The Spinothalamic Tracts Ascending Sensory 1 Diagram

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The Spinothalamic Tracts Ascending Sensory Diagram

The spinothalamic tracts carry pain, temperature, and crude touch from the body: lateral for pain/temp, anterior for touch/pressure. Fibers cross in the spinal cord shortly after entry, ascend contralaterally to…

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Course of the Lateral Cutaneous Nerve of the Forearm Diagram

Lateral cutaneous nerve of forearm (from musculocutaneous) supplies lateral forearm skin, running with cephalic vein. Its sensory only.

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Anatomical Course of the Inferior Alveolar Nerve and Lingual Nerve Diagram

Inferior alveolar nerve (V3 branch) enters mandibular foramen, runs in canal supplying lower teeth, exits as mental nerve for chin/lower lip; lingual nerve (also V3) supplies anterior tongue sensation/floor of…

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Anatomy of the Nerves of the Dorsum of the Foot Superficial and Deep Fibular Nerves Diagram

Nerves of dorsum foot include superficial fibular (sensory to dorsum except first webspace), deep fibular (first webspace skin, extensor digitorum brevis), sural (lateral foot). They emerge from anterior/lateral leg compartments.

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Anatomical Course of the Common Fibular Nerve and its Terminal Branches Diagram

The common fibular (peroneal) nerve wraps around fibular neck (vulnerable to injury), divides into superficial (lateral compartment, peroneus longus/brevis) and deep (anterior compartment, tibialis anterior, extensors) branches. It supplies dorsiflexion,…