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anatomy kidney picture

anatomy kidney picture in the body
anatomyzone kidney

1.    Renal Pyramid
2.    Interlobar Arteries
3.    Renal Arteries
4.    Renal Veins
5.    Renal Hilum
6.    Renal Pelvis
7.    Ureter
8.    Minor Calyx
9.    Renal Capsule
10.    Inferior Renal Capsule

11.    Superior Renal Capsule
12.    Interlobar Veins
13.    Nephron
14.    Minor Calyx
15.    Major Calyx
16.    Papillia
17.    Renal Column
Cortex is the outside of the kidney; it is a reddish-brown with a granular appearance. It contains all the glomeruli and convoluted tubules.

Medulla is the inner part of the kidney; it is a light color and appears striated as a result of the parallel arrangement of loops of Henle, medullary collecting ducts and blood vessels. Outer medulla is closer to cortex; inner medulla is farther from the cortex

Each lobe has pyramid of medullary tissue and cortical tissue.  The apex of the medullary pyramid forms the renal papilla which drains the urine to the minor calyx.  The minor calyxes form the major calyx.  Major calyxes lead to the renal pelvis.  The renal pelvis is drained by ureter.  Renal hilem is where the ureter, renal artery and vein, nerves and lymph vessels exit or enter the kidney.

Urinary Excretion Structures

urinary with blood

Kidneys are bean-shaped organs, each about the size of a fist. They are located near the middle of the back, just below the rib cage, one on each side of the spine.  Every day, a person's kidneys process about 200 quarts of blood to sift out about 2 quarts of waste products and extra water.

Adrenal glands are small, triangular glands located on top of both kidneys. There are two parts the outer region is called the adrenal cortex and the inner region is called the adrenal medulla. They influence blood pressure and sodium and water retention.

Renal cortex contains the blood filtering mechanism

Renal medulla contains the renal pyramids

Renal Pyramids are cone-shaped tissues of the kidney. The renal medulla is made up of 8 to 18 of these conical subdivisions. The broad base of each pyramid faces the renal cortex, and its apex, or papilla, points internally. The pyramids appear striped because they are formed by straight parallel segments of nephrons.

•    About 1 million in each kidney
•    Filter waste products, reabsorb nutrients and water, and secrete excess substances from the body
•    Parts of the nephron
  • o    Renal corpuscle  Glomerulus=tuft of capillaries
    Bowman's capsule=surrounds the glomerulus (also called the glomerular capsule). This is the location of filtration
o    Renal Tubule
    Proximal convoluted tubule: collects filtrate from Bowman's capsule
    Proximal straight tubule
    Loop of Henle: has a thin descending and ascending limb and a thick ascending limb
    Distal convoluted tubule
•    Collecting tubule receives input from many different nephrons
•    Types of Nephrons
o    Cortical nephrons which contain the glomerulus further out in the cortex; loops of Henle only descend to outer medualla and have shorter loops. These nephrons account for 80% of all nephrons.
o    Juxtaglomedulary nephrons sit next the medualla.  They have long Loops of Henle that go down to the inner medualla. These account for 20% of all nephrons.
•    Juxaglomerular Apparatus controls blood flow to the glomerulus to regulate filtration and absorption.
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