Posted inMedical
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.
Posted inBones
Articulations and Parts of the Sternum Diagram
Sternum parts: manubrium (superior, clavicular notches), body (middle, costal notches), xiphoid (inferior, cartilaginous in youth). Manubriosternal joint (angle of Louis) at T4/5 level.
Posted inOrgans
The Hard and Soft Palate Diagram
Hard palate (maxilla/palatine bones) forms anterior roof of mouth; soft palate (muscular: tensor/levator veli palatini, palatoglossus/pharyngeus) hangs posteriorly with uvula. It separates oral/nasal cavities during swallowing.
Posted inMedical
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…
Posted inOrgans
Aorta Diagram
The aorta begins at left ventricle (ascending), arches leftward (arch with three branches), descends thoracic then abdominal to bifurcate at L4 into common iliacs. It supplies all systemic arteries except…
Posted inCell
Aquaporin Water Channel
A membrane-level illustration of an aquaporin water channel shows how water crosses cell membranes efficiently. The protein channel is embedded in the lipid bilayer, with water molecules passing single file…
Posted inMedical
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.
Posted inMedical
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,…
Posted inOrgans
Human Heart Photo
The human heart, about fist-sized and nestled in the mediastinum behind the sternum, has a pointed apex at the left fifth intercostal space and base at the second rib, with…
Posted inBones
Parts of the Hyoid Bone Body Greater Horn Lesser Horn Diagram
The hyoid bone parts include body (central, C3 level), greater horns (posterior/lateral projections for muscle/ligament attachments), lesser horns (small superior projections for stylohyoid ligament). It floats, anchored by supra/infrahyoid muscles.
Posted inBones
CT Scan of a Blowout Fracture of the Inferior Wall Diagram
The CT Scan of a Blowout Fracture of the Inferior Wall diagram typically shows orbital floor disruption with herniation of inferior rectus or orbital fat into the maxillary sinus, often…
Posted inOrgans
Heart Valves
Heart valves ensure one-way blood flow through precisely timed opening and closing. Atrioventricular valvesthe tricuspid on the right and mitral on the lefthang from chordae tendineae anchored to papillary muscles,…
Posted inBones
Types of Synovial Joint Diagram
Types of synovial joints: plane (gliding, e.g., intercarpal), hinge (uniaxial, e.g., elbow), pivot (rotation, e.g., atlantoaxial), condyloid (biaxial, e.g., wrist), saddle (biaxial, e.g., thumb CMC), ball-and-socket (multiaxial, e.g., hip). All…
Posted inMedical
Course of the Lacrimal Nerve Diagram
Lacrimal nerve (V1 branch) enters orbit via superior orbital fissure, runs superolateral, supplies lacrimal gland (parasympathetic hitchhike from facial via pterygopalatine ganglion), conjunctiva, upper eyelid skin. It communicates with zygomatic…
Posted inBones
Bony Landmarks of the Costal Surface of the Scapula Diagram
Costal surface of scapula shows subscapular fossa (broad concave area for subscapularis), medial border with superior/inferior angles, costal/vertebral border, and serrated attachments for serratus anterior along medial border.
Posted inCancer
Kaposis Sacroma Lesions
Kaposi's sarcoma lesions appear as purple-red plaques or nodules on skin, mucosa, or viscera, caused by HHV-8 in immunocompromised like AIDS patients, proliferating spindle cells with vascular slits leaking red…
Posted inMedical
Origin of the Blood Supply to the Upper Limb Subclavian Vessels Diagram
Origin of upper limb blood supply: subclavian artery (from brachiocephalic right, aortic arch left), continues as axillary (thoracoacromial, subscapular), brachial (profunda brachii), then radial/ulnar in forearm.
Posted inMuscles
Medial View of the Tendons of the Muscles in the Post Leg Diagram
Medial view of posterior leg tendons highlights tibialis posterior (deepest, behind medial malleolus, supports arch), flexor digitorum longus (crosses tibialis posterior), flexor hallucis longus (most lateral/deep, under sustentaculum tali), and…
Posted inOrgans
Anatomical Relations of the Prostate Gland Diagram
Anatomical relations of prostate gland: anterior pubic symphysis/vesicoprostatic space, posterior rectum (separated by Denonvilliers fascia), superior bladder neck, inferior urogenital diaphragm, lateral levator ani. Seminal vesicles posterior-superior; urethra passes through.
Posted inOrgans
The Lingual Tonsil Waldeyers Ring Diagram
The lingual tonsil forms part of Waldeyers ring on posterior tongue base, composed of lymphoid follicles. It guards oropharynx entrance, enlarges in infection/allergy, visible on endoscopy or lateral neck X-ray.