EXCRETORY SYSTEM

Ashley KhamoMary Ann Jariq Alexia Lumayag

Importance of excretory& excretory system The importance of excretion is that the

skin acts as an organ Includes a pair of bean-shaped kidneys Kidneys are located in the abdominal

cavity, which you need Excretory system is also called the urinary

system Excretory system gets rid of wastes2

Examples of cells Four distinctive cells types make up the

excretory system One pore cell One duct cell One canal cell Fuse paired of gland cells3

Examples of tissue & organs in our bodies Excretory system’s main tissue is the liver

Liver – large organ located to the right of your stomach

The organs in the excretory system are the: Liver Lungs Skin Kidney Bladder 4

System name & relation to our bodies

Another name for excretory system is urinary system Urinary bladder gets rid of fluid from body

(remove wastes) Excretory system is a passive biological

system Removes excess, unnecessary or

dangerous materials from an organism5

Epidermis The thin protective outer layer of the

skin Composed of satisfied epithelial tissue Covering an organism Also called cuticle 6

Role of skin, lungs kidneys, and liver

Lungs Cellular respiration that occurs in every living cell in

your body Liver

Large organ Skin

Sweat comes out of pores in your skin Kidneys

Two tubes called ureters Urinary bladder Urethra 7

Structure of kidneys and associated structures Ureters connects to the kidney and

bladder Transportation system for urine

Bladder is where urine is stored before its released from the body

Urethra is final stage of the urinary tract Excretes urine out of the body, from the

bladder8

Urine transportation and urea formation Urine leaves the body through the

urethra Urine from the collecting ducts flows

through the real pelvis and into a table called a ureter

Urea is formed in the liver9

Nephron Urine is made in structures called

nephrons They’re functional units in the kidneys

The substances removed from the blood by the kidneys are toxins, urea, water and mineral salts

That forms a amber-colored liquid called urine

10

Circularity system in kidneys Circularity system supplies the kidneys

with blood Through the renal artery Also helps urine go to the bladder11

Peristalsis Peristalsis is the series of rhythmic

muscular contractions move food through the digestive tract

12

Bile and where it’s produced Bile is greenish or yellowish substance

Secreted by the liver used for breaking down fats, ethanol, and acidic wastes

Bile is released through bile ducts in the liver

A digestive chemical is produced in the liver Its stored in the gall bladder Secreted in the small intestine 13

Duodenum and its function Duodenum is the upper portion of the

small intestine Its main function is to receive the

partially digested food from the stomach Completes the process of digestion 14

Disorder in kidney failure Kidney are primary excretory organs Prostate cancer results in kidney failure

Prostate cancer can block the urethra That prevents the bladder from emptying15

Additional information The primary function of the excretory

system: Get rid of wastes Eliminates useless by-products excreted

from cells Eradicates harmful chemical builds up Maintains a steady, balanced chemical

concentration16

Bibliography Burton.k12.ca.us Emc.maricopa.edu Biology book 807-808 Science.jrank.org Normatlas.org Davinciprostatectomy.com Biology book 924-926,

946 Buzzle.com Thinkquest.org17

Michael Burkey M.J Farapee Janet L. Hopsin Bernice Essenfeld Baillie Jones George Linkston John H. Postlethwait Batul Nafisa Baxamusa Richard Molleny