This human anatomy ClipArt gallery offers 82 illustrations of the human excretory system, including views of the systems involved in excreting waste that are not already included in the respiratory and digestive systems. Included here are the urinary tract, renal system (e.g., kidneys), and excretory glands of the skin (e.g., sebaceous and sweat glands).

Condition of parts in extroversion of the bladder.

Bladder

Condition of parts in extroversion of the bladder.

The urinary bladder, distended, with surrounding structure, viewed from behind.

Bladder

The urinary bladder, distended, with surrounding structure, viewed from behind.

View looking into the pelvis from above and somewhat behind. The bladder has been artificially distended.

Bladder

View looking into the pelvis from above and somewhat behind. The bladder has been artificially distended.

Dissection of the base of the bladder and prostate gland, showing the vesiculae seminales and vasa deferentia. Labels: a, lower surface of the bladder at the place of the reflexion of the peritoneum; b, the part above covered by the peritoneum; i, left vas deferens, ending in e, the ejaculatory duct; the vas deferens had been divided near i, and all except the vesical portion has been taken away; s, left vesicula seminalis joining the same duct; s, the right vas deferens and right vesicula seminalis, which has been unraveled; p, under side of the prostate gland; m, part of the urethra; u, the ureters (cut short), the right one turned aside.

Bladder and Prostate Gland

Dissection of the base of the bladder and prostate gland, showing the vesiculae seminales and vasa deferentia.…

The bladder of a newborn male child, viewed fro, the outer side.

Bladder of Newborn Male Child

The bladder of a newborn male child, viewed fro, the outer side.

The empty bladder.

Empty Bladder

The empty bladder.

The figure on the left shows fibers of the external longitudinal layer. The middle figure shows fibers of the middle circular layer. The figure on the right shows the fibers of the internal longitudinal layer.

Fibers of the Bladder

The figure on the left shows fibers of the external longitudinal layer. The middle figure shows fibers…

View of the interior of the bladder in the region of the urethral orfice.

Interior of the Bladder

View of the interior of the bladder in the region of the urethral orfice.

The bladder, a reservoir for urine, is a musculo-membranous sac, situated n the anterior portion of the pelvis, behind the pubes, and in front of the rectum in the male, in front of the cervix uteri and vagina in the female.

The Bladder

The bladder, a reservoir for urine, is a musculo-membranous sac, situated n the anterior portion of…

The under aspect of the empty male bladder from a subject in which the viscera has been hardened in situ. The prostate has been severed from the bladder, and the white area in the drawing indicates the position where the two structures were continuous.

Under Aspect of Male Bladder

The under aspect of the empty male bladder from a subject in which the viscera has been hardened in…

View looking into the male pelvis from above and somewhat behind. From a specimen in which the bladder was firmly contracted and contained but a small amount of fluid. The paravesical fossa is seen on each side of the bladder. The deep peritoneal pouch in front of the rectum is bounded by marked crescentic folds, which meet together some distance behind the posterior border of the bladder.

View of Male Pelvis Showing Bladder

View looking into the male pelvis from above and somewhat behind. From a specimen in which the bladder…

Plan of the blood vessels connected with the tubules. "The blood passes downwards in straight vessels between the uriniferous tubules, to be returned by more or less straight veins to the venous arches, whence it is conveyed by large branches into the renal vein, which leaves the kidney at the hilus and pours its contents into the inferior vena cava... Urine is secreted from the blood in two ways. It is partly removed by a process of transudation or filtration, and partly by the secretary action of the cells lining the uriniferous tubules." —Kimber, 1907.

Plan of the Blood Vessels Connected with the Tubules

Plan of the blood vessels connected with the tubules. "The blood passes downwards in straight vessels…

Diagram of the course of two uriniferous tubules. Labels: M, Malpighian capsule, or dilated extremity, C, convoluted portion of tube; H, loop, consisting of a descending and ascending limb; D, collecting tubule.

Plan of the Blood Vessels Connected with the Tubules

Diagram of the course of two uriniferous tubules. Labels: M, Malpighian capsule, or dilated extremity,…

A section through the epidermis, somewhat diagrammatic, highly magnified. Below is seen a papilla of the dermis, with its artery, f, and veins, gg; a, the horny layer of the epidermis; b, the rete muscosum or Malpighian layer; d, the layer of columnar epidermic cells in immediate contact with the dermis; h, the duct of a sweat gland.

Epidermal Section

A section through the epidermis, somewhat diagrammatic, highly magnified. Below is seen a papilla of…

Magnified view of the epidermis, showing mouths of the sweat glands.

Epidermis

Magnified view of the epidermis, showing mouths of the sweat glands.

A section through the epidermis, highly magnified. Labels: Below is seen a papilla of the dermis, with its artery, f, and veins, g g; a, the horny layer of the epidermis; b, the rete mucosum or Malpighian layer; d, the layer of columnar epidermic cells in immediate contact with the dermis; h, the duct of a sweat gland.

Epidermis and Sweat Gland

A section through the epidermis, highly magnified. Labels: Below is seen a papilla of the dermis, with…

Epithelium of the bladder. Labels: a, one of the cells of the first row; b, a cell of the second row; c, cells in situ, of first, second, and deepest layers.

Epithelium of the Bladder

Epithelium of the bladder. Labels: a, one of the cells of the first row; b, a cell of the second row;…

Deep layers of the epithelium of the bladder, showing large club-shaped cells above, and smaller, more spindle-shaped cells below each with an oval nucleus.

Deep Layer of Bladder Epithelium

Deep layers of the epithelium of the bladder, showing large club-shaped cells above, and smaller, more…

Superficial layer of the epithelium of the bladder. Composed of polyhedral cells of various sizes, each one, two, or three nuciei.

Superficial Layer of Bladder Epithelium

Superficial layer of the epithelium of the bladder. Composed of polyhedral cells of various sizes, each…

Compound racemose gland. The resemblance to a bunch of fruit is very marked.

Compound Racemose Gland

Compound racemose gland. The resemblance to a bunch of fruit is very marked.

Compound tubular gland. The upper part is the duct; the lower is the secreting portion.

Compound Tubular Gland

Compound tubular gland. The upper part is the duct; the lower is the secreting portion.

A racemose gland, which is a gland where the ducts are branched and clustered like grapes.

Racemose Gland

A racemose gland, which is a gland where the ducts are branched and clustered like grapes.

A simple secreting gland. Secreting glands serve to secrete (i.e., separate out some substance from the blood). They vary in size and structure.

Simple Gland

A simple secreting gland. Secreting glands serve to secrete (i.e., separate out some substance from…

Diagram showing development of glands: A, a mere dimple in the surface; B, enlargement by division; C, enlargement by dilation; D, a combination of B and C; E, a racemose gland; F, development of method of E; G, a single tube intricately coiled.

Development of Glands

Diagram showing development of glands: A, a mere dimple in the surface; B, enlargement by division;…

Diagram showing types of glands. a-e, tubular; f-i, alveolar or saccular; a, simple; b, coiled; c-d, increasingly complex compound tubular; e, tuboaiveolar; f, simple; g-h, progressively complex compound alveolar.

Types of Glands

Diagram showing types of glands. a-e, tubular; f-i, alveolar or saccular; a, simple; b, coiled; c-d,…

"<em>A</em>, pyramids of the kidney; <em>B</em>, apices, or papillae, of the pyramids; <em>C</em>, pelvis of the kidney; <em>D</em>, upper end of the ureter</em>." &mdash; Blaisedell, 1904

Kidney

"A, pyramids of the kidney; B, apices, or papillae, of the pyramids; C, pelvis…

Two glands having the function of secreting urine from the system, situated at the back of the abdominal cavity, one on each side of the vertebral column.

Kidney

Two glands having the function of secreting urine from the system, situated at the back of the abdominal…

"Diagram of the blood vessels in the kidney." &mdash;Davison, 1910

Kidney

"Diagram of the blood vessels in the kidney." —Davison, 1910

Section of Kidney. 1: Body of Kidney; 2: Internal vessels; 3: Ureter, leading to the bladder.

Kidney

Section of Kidney. 1: Body of Kidney; 2: Internal vessels; 3: Ureter, leading to the bladder.

Transverse section of the human kidney: "(a) cortex; (b) medulla; (c) small branch of the renal artery; (d) renal artery; (e) ureter; (f) pelvis." -Foster, 1921

Kidney

Transverse section of the human kidney: "(a) cortex; (b) medulla; (c) small branch of the renal artery;…

Plan of a longitudinal section through the pelvis and substance of the right kidney. Labels: a, the cortical substance; b, broad part of the pyramids of Malpighi; c, the division of the pelvis named calyces, laid open; c', one of those unopened; d, summit of the pyramids of papillae projecting into calyces; p, pelvis or enlarged division of the ureter within the kidney; u, the ureter; s, the sinus; h, the hilus.

Kidney

Plan of a longitudinal section through the pelvis and substance of the right kidney. Labels: a, the…

Circulation in the kidney. Labels: ai, small branch of renal artery giving off the branch va, which enters glomerulus, issues as ve, and then breaks up into capillaries, which after surrounding the tubule find their way by v into vi, branch of the renal vein; m, capillaries around tubules in parts of the cortical substance where there are no glomeruli.

Kidney Circulation

Circulation in the kidney. Labels: ai, small branch of renal artery giving off the branch va, which…

Diagram of a kidney glomerulus and the commencement of an uriniferous tubule. Labels: a, afferent blood vessel pushing in the wall, w, of a Malpighian capsule and ending in the capillary tuft from which the vein e issues; c, involuted epithelium; for the sake of distinctness it is represented as a wrapping for the whole tuft; in nature it forms a close investment around each vessel of glomerulus; A, space in capsule; d, neck of capsule; ff, first convoluted portion of an uriniferous tubule; o, granular epithelial cells; b, basement membrane.

Kidney Glomerulus

Diagram of a kidney glomerulus and the commencement of an uriniferous tubule. Labels: a, afferent blood…

Diagram showing a kidney glomerulus and the commencement of an uriniferous tubule. Labels: a, afferent blood vessel pushing in the wall, w, of a Malpighian capsule and ending in the capillary tuft from which the vein e issues; c, involuted epithelium the vascular tuft, but in nature it forms a close investment around each vessel of the glomerulus; A, space in capsule into which liquid transuded from the vessel of the glomerulus passes; d, neck of capsule passing into commencement of first convoluted portion, f f, of an uriniferous tubule; o, granular epithelial cells; b, basement membrane.

Kidney Glomerulus and Uriniferous Tubule

Diagram showing a kidney glomerulus and the commencement of an uriniferous tubule. Labels: a, afferent…

Diagrammatic representation of the structure forming a kidney lobe. In the middle part of the figure the course of one of the kidney tubules is indicated, and in the lateral parts the disposition of the larger arteries. Labels: a, cortex; B, intermediate zone; C, papillary portion. The diagram at the right hand side of the lower part of the figure illustrates the connection of the structure composing a Malpighian corpuscle.

Structure of Kidney Lobe

Diagrammatic representation of the structure forming a kidney lobe. In the middle part of the figure…

Section through the kidney showing the medullary and cortical portions, and the beginning of the ureter. Labels: ct, cortex; M, medulla; py, papilla of pyramidal section projecting into one of the calices of pelvis; RA, renal artery; RV, renal vein; U, ureter.

Section through the Kidney

Section through the kidney showing the medullary and cortical portions, and the beginning of the ureter.…

Section through the right kidney from its outer to inner border. Labels: 1, cortex; 2, medulla; 2', pyramid of Malpighi; 2'', pyramid of Ferrein; 5, small branches of the renal artery entering between the pyramids; A, a branch of the renal artery; C, the pelvis of the kidney; U, ureter; C, a calyx.

Kidney Section

Section through the right kidney from its outer to inner border. Labels: 1, cortex; 2, medulla; 2',…

A small portion of the wall of the kidney sinus.

Kidney Sinus Wall

A small portion of the wall of the kidney sinus.

Vascular supply of the kidney. Labels: a, part of arterial arch; b, interlobular artery; c, glomerulus; d, efferent vessel passing to the medulla as false arteria recta; e, capillaries of cortex; f, capillaries of medulla; j, vena stellula; i, interlobular vein.

Blood Supply of the Kidney

Vascular supply of the kidney. Labels: a, part of arterial arch; b, interlobular artery; c, glomerulus;…

Diagram of the blood vessels in a kidney.

Diagram of Blood Vessels in a Kidney

Diagram of the blood vessels in a kidney.

A diagram of the structure of the kidney. Labels: 1, Tubules or minute tubes. 2, Enlargement of a tubule at its extremity. 3, Branches of the real artery ending in vessels which enter the enlargements as seen at 4, 5. 6, Knot of blood-vessels freed from its investment. 7, Veins emerging from the knots. 8, Plexus formed by the latter veins among the tubules, from which plexus originate the branches of the renal vein.

Diagram of the Structure of the Kidney

A diagram of the structure of the kidney. Labels: 1, Tubules or minute tubes. 2, Enlargement of a tubule…

Fetal kidney, showing lobulation.

Fetal Kidney

Fetal kidney, showing lobulation.

Frontal section through the right kidney and adjacent structures showing the renal fasciae and fatty layers, viewed from in front.

Frontal Section Through Kidney

Frontal section through the right kidney and adjacent structures showing the renal fasciae and fatty…

A longitudinal section of a kidney. Labels: 1, 2, 3, Parts of the Kidney. 4, Pelvis. 5, Ureter. 6, Renal artery. 7, Renal vein. 8, Branches of the latter vessels in the kidney.

Longitudinal Section of a Kidney

A longitudinal section of a kidney. Labels: 1, 2, 3, Parts of the Kidney. 4, Pelvis. 5, Ureter. 6, Renal…

The minute structure of the kidney, which commences in the cortical substance of the organ as the Malpighian bodies, small round masses of deep-red color, averaging about 1/120 inches in diameter, and each consisting of a central glomerulus of vessels and a membranous envelope or Bowman's capsule (c), the latter being the commencement of the uriniferous tubule (d). The renal artery (a) and renal vein (v) are also shown.

Minute Structure of the Kidney

The minute structure of the kidney, which commences in the cortical substance of the organ as the Malpighian…

Sagittal section through sinus of child's kidney, showing lower part of pelvis and commencement of ureter.

Sagittal Section Through Sinus of Kidney

Sagittal section through sinus of child's kidney, showing lower part of pelvis and commencement of ureter.

Section through the right kidney from its outer to its inner border. Labels: 1, cortex; 2, medulla; 2' , pyramid of Malpighi; 2", pyramid of Ferrein; 5, small branches of the renal artery entering between the pyramids; A, a branch of the renal artery; D, the pelvis of the kidney; U, ureter; C, a calyx.

Section of the Right Kidney

Section through the right kidney from its outer to its inner border. Labels: 1, cortex; 2, medulla;…

Part of a section through the cortex of the kidney in the direction of the straight tubules.

Section Through Kidney

Part of a section through the cortex of the kidney in the direction of the straight tubules.

Longitudinal section through the kidney. The vessels and fat have been removed to give a view of the wall of the kidney sinus. The points where the vessels enter the kidney sinus are seen as little holes in the sinus wall at a and elsewhere.

Section Through Kidney

Longitudinal section through the kidney. The vessels and fat have been removed to give a view of the…

An incision in the right side above the kidney, showing a typical surgical approach to this organ, exposing the peritoneum and showing relations of abdominal muscles and fasciae.

Surgical Incision to the Kidney

An incision in the right side above the kidney, showing a typical surgical approach to this organ, exposing…

The basic structure of the kidney, which consists of the cortical portion, the medullary substance, and the sinus. The kidneys are two organs, situated in the back part of the abdominal cavity, one on each side of the vertebral column, behind the peritoneum.

The Kidney

The basic structure of the kidney, which consists of the cortical portion, the medullary substance,…

Kidneys and their vessels. 1: Left kidney; 2: Ascending vein; 3: Aorta; 4: Left ureter; 5: Bladder.

Kidneys

Kidneys and their vessels. 1: Left kidney; 2: Ascending vein; 3: Aorta; 4: Left ureter; 5: Bladder.

The kidneys viewed from behind. The dotted lines mark out the areas contact with the various muscle forming the posterior abdominal wall. Labels: a, depression corresponding to the transverse process of the first lumbar vertebrae; b, depression corresponding to the transverse process of the second lumbar vertebrae; c, depression corresponding to the twelfth rib.

Kidneys from Behind

The kidneys viewed from behind. The dotted lines mark out the areas contact with the various muscle…

The kidneys and great vessels viewed from the front. The drawing was made before the removal of the organs, from a specimen in which the viscera has been hardened in situ. The dotted lines mark out the areas which were contacted with various other abdominal viscera.

Kidneys from the Front

The kidneys and great vessels viewed from the front. The drawing was made before the removal of the…

The anterior surfaces of the kidneys, showing areas of contact of neighboring viscera.

Anterior Surface of the Kidneys

The anterior surfaces of the kidneys, showing areas of contact of neighboring viscera.

The posterior surfaces of the kidneys, showing areas of relation to the parietes.

Posterior Surface of the Kidneys

The posterior surfaces of the kidneys, showing areas of relation to the parietes.

Vertical section of the kidney.

Vertical Section of the Kidney

Vertical section of the kidney.

The under surface of the liver. Labels: G.B., gallbladder; H.D., common bile duct; H.A.; hepatic artery; V. P., portal vein; L.Q., lobulus quadratus; L.S., lobulus spigelii; L.C., lobulus caudatus; D.V., ductus venosus; U.V.,umbilical vein.

Liver

The under surface of the liver. Labels: G.B., gallbladder; H.D., common bile duct; H.A.; hepatic artery;…

Portion of a lobule of liver. Labels: a, bile capillaries between liver cells, the network which is well seen; b, blood capillaries.

Portion of a Lobule of Liver

Portion of a lobule of liver. Labels: a, bile capillaries between liver cells, the network which is…

Relation of the Malpighian body to the uriniferous ducts and blood vessels. Labels: a, one of the interlobular arteries; a', afferent artery passing into the glomerulus; c, capsule of the Malpighian body, forming the termination of and continuous with t, the uriniferous tube; e', efferent vessels which subdivide in the plexus; p, surrounding the tube, and finally terminate in the branch of the renal vein, e.

Malpighian Body

Relation of the Malpighian body to the uriniferous ducts and blood vessels. Labels: a, one of the interlobular…