Anatomy System – Human Body Anatomy diagram and chart images

Tensor Tympani Muscle Middle Ear Diagram

Tensor Tympani Muscle Middle Ear diagram shows this tiny muscle originating from the Eustachian tube cartilage and sphenoid, inserting on the malleus handle to dampen loud sounds by tensing the…

Cell

Granular leukocytes, or granulocytes, are white blood cells with distinctive cytoplasmic granules and lobed nuclei, comprising neutrophils, eosinophils, and basophils. Neutrophils, the most abundant, rush to infection sites to phagocytose…

Medical

Coronary Angiogram with Narrowing Labelled Diagram

Coronary angiograms label narrowing (stenosis) in arteries like LAD, circumflex, right coronary, often graded by percent occlusion to guide stenting or bypass decisions.

Muscles

Long and Lateral Heads of the Triceps Brachii Diagram

Triceps brachii long head originates from infraglenoid tubercle (crosses shoulder), lateral/medial heads from humerus shaft. All insert on olecranon for elbow extension.

Medical

Pretracheal Fascia Layer of the Neck Labelled Diagram

Pretracheal fascia (visceral layer) invests thyroid, trachea, esophagus, infrahyoid muscles; blends with carotid sheath laterally, buccopharyngeal fascia posteriorly. It forms visceral vascular space and invests recurrent laryngeal nerves.

Medical

anatomical terms of location Diagram

Anatomical terms of location standardize descriptions: superior/inferior, anterior/posterior, medial/lateral, proximal/distal, superficial/deep, palmar/plantar, dorsal/ventral, etc., based on anatomical position.

Organs

Structure of the Peritoneum and Peritoneal Cavity Diagram

The peritoneum and peritoneal cavity structure includes parietal peritoneum (lining abdominal/pelvic walls) and visceral peritoneum (covering organs). The greater sac is the main cavity; lesser sac (omental bursa) lies behind…

Muscles

Fourth Layer of the Plantar Muscles Plantar and Dorsal Interossei Diagram

The fourth layer of plantar muscles includes the plantar interossei (three, adduct toes 3-5 from metatarsals to proximal phalanges) and dorsal interossei (four, abduct toes 2-4 from adjacent metatarsals). Both…

Organs

Histology Small IntestinesN

The small intestine's histology maximizes surface area for digestion and absorption across its three segmentsduodenum, jejunum, ileumwith tall villi covered in microvilli on enterocytes forming the brush border loaded with…

Bones

Elbow 3D Diagram

Elbow 3D view shows humeroulnar (hinge), humeroradial (ball/socket), proximal radioulnar (pivot) joints, with trochlea/capitulum, olecranon/coronoid fossae, radial head/annular ligament. It allows flexion/extension and pronation/supination.

Bones

Bones of the Middle Cranial Fossa Diagram

The middle cranial fossa houses the temporal lobes, formed by greater sphenoid wings, squamous temporal, and anterior petrous temporal. Key features include superior orbital fissure, foramen rotundum/ovale/spinosum, carotid canal, and…

Medical

Structure of the Circle of Willis Diagram

The circle of Willis is an anastomotic arterial ring at brain base: anterior cerebral (from internal carotid), anterior communicating, internal carotid, posterior communicating (from posterior cerebral), posterior cerebral (from basilar).…

Organs

Overview of the Urinary Tract Kidney Ureter and Bladder Diagram

The urinary tract includes kidneys (urine production), ureters (peristaltic transport), bladder (storage), urethra (exit). Kidneys filter blood, ureters drain to bladder trigone, bladder expands/contract via detrusor.

Organs

Structure of the Testes and Epididymis Diagram

Testes and epididymis structure: tunica albuginea encases seminiferous tubules (sperm production) in testes; epididymis (head/body/tail) stores/matures sperm. Rete testis connects them.

Dental

Tooth

Tooth consists of crown visible enamel hardest substance covering dentin pulp chamber nerves vessels, neck gum junction, root cementum periodontal ligament anchoring alveolar bone, dentin tubules sensitive, pulp vital reactive…

Medical

Descent of the Testis Embryology Diagram

Descent of the testis embryologically begins near kidneys at 7-8 weeks, guided by gubernaculum through inguinal canal (transabdominal phase via genitofemoral nerve), then inguinoscrotal phase (hormone-driven, testosterone/insulin-like factor 3) into…

Medical

Muscular Triangle of the Neck Diagram

The muscular triangle of the neck is bounded by midline, anterior digastric belly, and superior omohyoid belly, containing infrahyoid muscles (sternohyoid, sternothyroid, thyrohyoid), thyroid gland, trachea, esophagus, and common carotid…

Muscles

Muscular Attachments to the Mandible Body Ramus Diagram

Muscular attachments to mandible: body (geniohyoid/genioglossus anterior, mylohyoid lateral, digastric anterior belly), ramus (masseter lateral, medial pterygoid medial, temporalis coronoid). They enable mastication, speech, swallowing.

Organs

Overview of Conduction Pathway Components Diagram

The cardiac conduction pathway starts at the SA node (pacemaker), spreads through atria to AV node (delay), then bundle of His, left/right bundles, and Purkinje fibers for rapid ventricular activation.…

Organs

Anatomical Position and Relations of Pituitary Gland Diagram

The pituitary gland sits in sella turcica, attached to hypothalamus by infundibulum, surrounded by cavernous sinuses laterally, optic chiasm superiorly, sphenoid sinus inferiorly. Relations affect surgical/transsphenoidal approaches and compression symptoms.