Chantal Lima

1
Excretory System

• Chantal Lima
• Carolina Cardenas

2
Table Of Contents

• Vocabulary
• Waste Problems
• Learning About The Excretory System
• Excretory System Functions
• The Human Excretory System
• What Is Excretory System
• Components Of The Excretory System
• The Kidney
• White Cells
• Liver
• Skin
• Lungs

3
Vocabulary

• Kidney Either one of a pair of organs in the
  dorsal region of the vertebrate abdominal cavity,
  functioning to maintain proper water and
  electrolyte balance, regulate acid-base
  concentration, and filter the blood of metabolic
  wastes, which are then excreted as urine.
• Bladder Any of various distensible membranous
  sacs, such as the urinary bladder or the swim
  bladder, that serve as receptacles for fluid or
  gas.
• Utter Complete absolute entire utter
  nonsense utter darkness.
• Retal Veins The vessels carrying blood.
• Renal Arteries An artery with its origin in the
  aorta and with distribution to the kidney.

4
Vocabulary

• Urethra The canal through which urine is
  discharged from the bladder in most mammals and
  through which semen is discharged in the male.
• Waste To use, consume, spend, or expend
  thoughtlessly or carelessly.
• Urea A water-soluble compound, CO(NH2)2, that is
  the major nitrogenous end product of protein
  metabolism and is the chief nitrogenous component
  of the urine in mammals and other organisms. Also
  called car amide.
• Urine The fluid excreted by the kidneys, passed
  through the urethras, stored in the bladder, and
  discharged through the urethra its constituents
  and volume vary widely from day to day in order
  to maintain normal fluid and electrolyte
  homeostasis.
• Nephron Any of the numerous filtering units of
  the vertebrate kidney that remove waste matter
  from the blood.

5
Vocabulary

• Glomerulus A small cluster or mass of blood
  vessels or nerve fibers.
• Bowmans Capsule A double-walled, cup-shaped
  structure around the Glomerulus of each Nephron
  of the vertebrate kidney.
• Distal Tubule A small tube situated farthest
  from point of attachment or origin, as of a limb
  or bone.
• Proximal Tubule The convoluted portion of the
  vertebrate Nephron that lies between Bowman's
  capsule and the loop of Henley, is made up of a
  single layer of cubical cells with striated
  borders.
• Collecting Duct Tubules renails collagens see
  under tubules.

6
Vocabulary

• Homeostasis maintenance of equilibrium or a
  stable bodily state.
• Urine Formation The waste product secreted by
  the kidneys that in mammals is a yellow to
  amber-colored, slightly acid fluid discharged
  from the body through the urethra.
• Filtration The act or process of filtering.
• Reabsorption To accommodate or accept again, as
  into a group or category The economy cannot
  reabsorb all of the refugees into the workforce.

7
Waste Problems

• The trillions of cells that make up our bodies
  are working all the time. Their activities
  produce waste problems, were allowed to build up,
  the body would become poisoned and die.
  Fortunately, the body has a very efficient system
  for getting rid of wastes and other harmful
  substances. Called the excretory system, it is a
  complicated system whose parts are found though
  the body.

8
Learning about the excretory system

• Excretation is a basic as eating. Scientist
  learning a grate deal about the excretory system
  in the late 1800s and the early part of this
  century. This knowledge resulted in many
  treatments for excretory problems, including
  kidney dialysis matches that act as artificial
  kidney and techniques for transplanting kidneys
  from one person to another.

9
Excretory System Functions

• Collect water and filter body fluids.
• 2) Remove and concentrate waste products from
  body fluids as necessary for homeostasis.
• 3) Eliminate excretory products from the body.

10
The Human Excretory System

• The urinary system is made-up of the kidneys,
  ureters, bladder, and urethra. The nephron, an
  evolutionary modification of the nephridium, is
  the kidney's functional unit. Waste is filtered
  from the blood and collected as urine in each
  kidney. Urine leaves the kidneys by ureters, and
  collects in the bladder. The bladder can distend
  to store urine that eventually leaves through the
  urethra.

11
What Is Excretory System ?

• The excretory system removes water, waste
  material and harmful substances from the body.
  This process is called excretion or elimination.
  The lungs, skin, kidneys and lower intestine are
  involved in excretion. The urinary system is
  considered part of the excretory system. The
  kidneys and bladder are parts of the urinary
  system. Solid wastes are removed from the body
  through the intestine during bowel movements.

12
Components Of The Excretory System

• Kidneys
• 2) White Blood Cells
• 3) Liver
• 4) Skin
• 5) Lungs

13
The Kidney

• A kidney has 1,000,000 nephron, which are like
  little mini-organs. They have there own
  circulation system, meaning they have their own
  blood supply, an arteriole, a venue, and some
  capillaries. It also has a tube connecting it to
  the ureter.

14
White Cells

• Whenever a germ or infection enters the body, the
  white blood cells snap to attention and race
  toward the scene of the crime. The white blood
  cells are continually on the lookout for signs of
  disease. When a germ does appear, the white blood
  cells have a variety of ways by which they can
  attack.

15
Liver

• The liver is the largest glandular organ of the
  body. It weighs about 3 lb. It is reddish brown
  in color and is divided into four lobes of
  unequal size and shape. The liver lies on the
  right side of the abdominal cavity beneath the
  diaphragm.

16
Skin

• The skin is the body's largest organ. It protects
  us against sunlight, injury, and infection. It
  helps regulate body temperature, stores water and
  fat, and produces vitamin D. The skin has two
  main layers  the outer epidermis and the inner
  dermis.

17
Lungs

• The Lungs are paired organs in the chest that
  perform respiration. Each human has two lungs.
  Each lung is between 10 and 12 inches long. The
  two lungs are separated by a structure called the
  mediastinum.