Transport of Nutrients/ Wastes Through The Body

Transporting and getting rid of waste!

1.     Mammals have a circulatory waste and nutrient system!

2.     These systems help the mammals body get rid of waste, which is obviously necessarily for life. Also one of these systems helps transport materials throughout the whole body. 

3.     These are all the systems that mammals use to get rid of the waste in our body. 

Circulatory System

• The Circulatory System is responsible for transporting materials throughout the entire body of the mammal. It transports nutrients, water, and oxygen to the mammals cells. Carries away waste like carbon dioxide that cells produce. 
• The Circulatory system consist of blood, a heart and blood vessels. 

Functions of the Circulatory System

• Gasses are transported
• Oxygen is transported from the lungs to the cells.
• Carbon Dioxide waste is transported from cells to the lungs.
• Transport nutrients to the cells. (Ex. Glucose, ATP)
• Transport other wastes from the cells. (Ex. Ammonia)
• Transport hormones.

Digestive System 

• Previously, we have already learned about the digestive system of a mammal. Let us just briefly go over it again.
• Digestive system is where a group of organs convert food into energy and basic nutrients to feed the whole body.
• Mammals digestion begins in the mouth, then moves through the pharynx, into the esophagus, and then into the stomach and small intestine.

Key Points:

• In the stomach, acids and enzymes are secreted to break down food into its nutrient components.
• The churning of the stomach helps to mix the digestive juices with the food, turning it into a substance called an enzyme. 

Urinary System

• What is the urinary system?
• The urinary system is a group of organs in the mammals body dealing with filtering out excess fluid and other substances from the bloodstream. Substances are filed out in the form of urine.

Key Points:

• The urinary system is responsible for filtering wastes from the blood and both forming and secreting urine. 
• The bladder, ureters, urethras and kidneys are all used to help urine pass through the body of the mammal. 

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FUN FACT OF THE POST!

• The Circulatory System has been studies for thousands of years! The earliest known writing about it appears in the Ebers Papyrus, an Egyptian medical document dating to the 16th century B.C. The papyrus is believed to describe a physiological connection between the heart and the arteries, stating that after a person breathes air into the lungs, the air enters the heart and then flows into the arteries.

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If you would like to know more about these systems then check out these websites!

• http://www.peteducation.com/article.cfm?c=18+1798&aid=3015
• http://www.srvhs.org/staff/teachers/CSoldati/mammalian%20digestive%20system.htm
• http://www.britannica.com/EBchecked/topic/360838/mammal/51717/Circulatory-system