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Body Atlas, Organ Reference

Organs

Organ reference, parts, location, blood and nerve supply, function, and common diseases.

373 organs
29 organs starting with S  Clear ×
Organ Scrotum scrotum Pelvis & Hip The scrotum is the pouch of thin, wrinkled skin and smooth muscle that holds the testes…
Organ Sebaceous Glands glandulae sebaceae Whole Body Sebaceous glands are small oil glands in the dermis that release an oily secretion called sebum.…
Organ Segmental Bronchi bronchi segmentales Chest The segmental (tertiary) bronchi are branches of the lobar bronchi, each supplying one bronchopulmonary segment. There…
Organ Semilunar Valve Cusps valvulae semilunares Chest The aortic and pulmonary valves each have three thin, pocket-shaped cusps that open flat against the…
Organ Seminal Colliculus colliculus seminalis Pelvis & Hip The seminal colliculus (verumontanum) is a rounded bump on the back wall of the prostatic urethra.…
Organ Seminal Vesicle glandula vesiculosa (vesicula seminalis) Pelvis & Hip The seminal vesicles are a pair of coiled, sac-like glands about 5 cm long lying behind…
Organ Seminiferous Tubules tubuli seminiferi Pelvis & Hip The seminiferous tubules are the tightly coiled tubes inside the testis where sperm are made. Each…
Organ Serous Pericardium pericardium serosum Chest The serous pericardium is a thin, closed membrane folded back on itself to form two continuous…
Organ Sigmoid Colon colon sigmoideum Pelvis & Hip The sigmoid colon is an S-shaped loop of colon, very variable in length, running from the…
Organ Sinoatrial Node nodus sinuatrialis Chest The sinoatrial (SA) node is the heart's natural pacemaker, a small crescent of specialised muscle cells…
Organ Sinus Venarum sinus venarum cavarum Chest The sinus venarum is the smooth-walled back part of the right atrium that receives the superior…
Organ Skin cutis Whole Body The skin is the body's largest organ, covering about 1.5-2 square metres and making up roughly…
Organ Skin Tension Lines lineae distractionis Whole Body Skin tension lines (Langer lines and the related relaxed skin tension lines) describe the direction in…
Organ Small Intestine intestinum tenue Abdomen The small intestine is the longest part of the digestive tract, a coiled tube about 6-7…
Organ Soft Palate palatum molle (velum palatinum) Head & Skull The soft palate is the mobile muscular flap hanging from the back edge of the hard…
Organ Spermatic Cord funiculus spermaticus Pelvis & Hip The spermatic cord is the bundle of structures that suspends each testis and runs from the…
Organ Spongy Urethra pars spongiosa urethrae Pelvis & Hip The spongy (penile) urethra is the longest part of the male urethra, about 15 cm, running…
Organ Stomach gaster Abdomen The stomach is the widest part of the digestive tract, a J-shaped muscular bag between the…
Organ Stratum Basale stratum basale epidermidis Whole Body The stratum basale is the deepest single layer of the epidermis, a row of column-shaped cells…
Organ Stratum Corneum stratum corneum epidermidis Whole Body The stratum corneum is the outermost layer of the skin, made of 15-30 or more rows…
Organ Stratum Granulosum stratum granulosum epidermidis Whole Body The stratum granulosum is a thin layer of 1-5 cell rows where keratinocytes flatten, fill with…
Organ Stratum Lucidum stratum lucidum epidermidis Hand & Wrist The stratum lucidum is a thin clear layer of flattened dead cells found only in very…
Organ Stratum Spinosum stratum spinosum epidermidis Whole Body The stratum spinosum is the thickest living layer of the epidermis, several cells deep, where keratinocytes…
Organ Superior Lobe of the Left Lung lobus superior pulmonis sinistri Chest The superior (upper) lobe of the left lung lies above and in front of the oblique…
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