diagram – Page 2 – Anatomy System – Human Body Anatomy diagram and chart images

Cellular Components of Bone Diagram

The Cellular Components of Bone diagram zooms to the microscopic level with osteoblasts building matrix, osteocytes living inside lacunae, osteoclasts breaking bone down, and the osteon units with their central…

Muscles

Coracobrachialis Biceps and Brachialis Muscles Diagram

Coracobrachialis (coracoid to mid-humerus), biceps brachii (long/short heads to radial tuberosity), brachialis (humerus to ulna coronoid). All flex elbow; biceps supinates forearm. Musculocutaneous nerve supplies.

Medical

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.

Medical

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

Medical

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…

Medical

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.

Bones

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.

Organs

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.

Medical

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…

Organs

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…

Medical

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.

Medical

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,…

Bones

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.

Bones

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…

Bones

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…

Medical

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…

Bones

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.

Medical

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.

Muscles

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…

Organs

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.