EXCRETORY SYSTEM

GRADE 10 LIFE SCIENCES

BY KAMATI VUYO

201203654ALEJANDRA, C. ANDREW, P . BRONTE, S. CAMILA, M . KIM, P .

The excretory system is a passive biological system

that removes excess, unnecessary materials from

an organism and prevent damage to the body

The matter, such as urine or sweat, that is so

excreted

The act or process of discharging waste matter from the blood, tissues, or organs.

What the Excretory System does

The system removes metabolic waste fromthe body. One of the main parts of theExcretory System is the kidney. The wasteproducts arrive in the kidneys then thekidneys then start a process that removeshazardous toxins and products that the bodycan not use. The kidneys then mix the wasteproducts together to form a liquid calledurine. The urine then goes to the bladder andis kept there until it is released via the Uretha.

DIFFERENT ORGANS INVOLVED IN EXCRETORY SYSTEM:

Kidney Ureter

Urinary bladder renal vein

Urethra skin

urethral sphincter Dorsal aorta

vena cava adrenal glandrenal artery

KidneyThe kidney is a reddish brown, bean

shaped organ which is present in

each of the sides of the Vertebral

column .

Skin

The skin is another part of the

excretory system: it eliminates

sweat, that helps cool the body and

regulate the concentration of salt

Renal artery

normally arise off the side of

the abdominal aorta, immediately

below the superior mesenteric

artery, and supply the kidneys with

blood.

Adrenal gland

Are endocrine glands that sit at

the top of the kidneys the right

adrenal gland is triangular

shaped, while the left adrenal

gland is semi lunar shaped. They

are chiefly responsible for

releasing hormones in response

to stress

Renal veinThe renal veins are veins that drain the kidney. They connect the kidney

to the inferior vena cava. They carry

the blood purified by the kidney.

Vena cavavein is the vena cava that carries de-oxygenated blood from the

lower half of the body into the right

atrium of the heart.

urethral sphincter

refers to one of two muscles used to

control the exit of urine in the urinary

bladder through the urethra.

UreterAre muscular ducts that

propel urine from the kidneys

to the urinary bladder. In

humans, the ureters arise from

the renal pelvis on the medial

aspect of each kidney before

descending towards the bladder.

Urinary bladder

The urinary bladder is the organ that

collects urine excreted by the

kidneys prior to disposal

by urination. It is a hollow muscular

, and sits on the pelvic floor

Dorsal aorta

The dorsal aorta give branches to

the yolk-sac, and are continued

backward through the body-stalk as

the umbilical arteries to the villi of

the chorion.

Urethra

In anatomy is a tube which

connects the urinary bladder to the outside of the body.

Liver

Are produced as a result of break

down of hemoglobin in the worn out

red blood cells in the liver and

excreted with the bile into the

duodenum and removed along with

the feces .

PROBLEMS

A problem that can happen in the Excretory system is Urinary

tract infection- This is usually due to a bacteria which can

cause burning during urination. It is usually treated with

antibiotics.

Kidney stones- These are small hard deposits that develop in

the kidneys. They can cause severe pain in the stomach and

back. Surgery may be required if they are to expand.

Cystitis is an infection in the bladder, due to bacteria.

Blood in the urine- is a sign of a problem usually due to an

urinary tract infection or kidney stones. Sometimes, it can be

due to a more serious problem such as cancer.

HOW TO LOOK AFTER YOUR

EXCRETORY SYSTEMS

Drink adequate amounts of water.

Exercise regularly.

Eat a nutritious diet consisting of

fruits, vegetables, grains, and nuts.

Stay away from drugs, alcohol and

tobacco

LARGE INTESTINE

The Large Intestine collects waste

from throughout the body.

It extracts any remaining (usable)

water and then removes waste.

Urethritis is an inflammation of the urethra

caused by a bacterial or viral infection.

Symptoms of urethritis vary between sexes. A

symptom in men can be seen as blood in the

urine or semen or even a discharge containing

puss. In women, abdominal pain, pain during

urination and fever may occur.

Urethritis

Circulatory:

Blood that circulates through the body passes

through one of the two kidneys. Urea, uric acid, and water are removed from the blood and most of the water is put back into the system

Endocrine:

Monitors levels of compounds and fluids

Kidney function must be constantly altered to provide the best internal environment for your cells

If too much water is present, hormones are released that allow for more urine production. If the body is dehydrated, less urine will be produced

Adrenal gland position on the top of each kidney. Adrenals release adrenaline into your body

How it Works with Other Systems

WHICH IS THE RELATIONSHIP BETWEEN

WATER AND EXCRETION?

Water is essential for digesting food. It is also important for getting rid of various toxic elements from the body, in the form of urine, sweat and faecal matter.

Water helps to cushion our joints and prevents shocks in them.

Water present in blood is the carrier of oxygen and nutrients to all our body cells.

The excretory System:

REFERNCES

This presentation is a mash up of 5 different sources & they are:

Alejandra, C. (2010). H20 = Excretion.

http://www.slideshare.net/alejandraANDcamila/h2-o-excretion?qid=4986fe4c-f916-4119-85ab-88fd388b2118&v=qf1&b=&from_search=1

Andrew, P. (2012). Human Excretory system.

http://www.slideshare.net/andrewpdock123/excretory-system-7551606?qid=d0d468ca-5c7a-4896-b93f-6358db829615&v=default&b=&from_search=7

Bronte, S. (2011). The Excretory system

http://www.slideshare.net/yr82011/the-excretory-systembronte?qid=c8c6b535-ef05-4631-9334-0db24bdc032d&v=qf1&b=&from_search=14

Camila, M. (2012). The Excretory system.

http://www.slideshare.net/132cool/excretory-system-8430788?qid=e71d87bb-3571-4099-8b31-1337dad6c19e&v=qf1&b=&from_search=12

Kim, A. (2013). Excretory system. http://www.slideshare.net/kimangelie/excretory-system-25809066?qid=c8c6b535-ef05-4631-9334-0db24bdc032d&v=default&b=&from_search=10