DENNIS ANYAMELE

Excretory System

Functions & Purpose

The purpose of the excretory system is to get rid of waste in the body and help maintain homeostasis in an organism.

Role in Homeostasis

The excretory system helps the body maintain homeostasis, a stable internal environment. It does this by removing waste to keep the body function properly.

Interaction with Other Systems

The excretory system works the most with the circulatory and endocrine system. The circulatory circulates blood through the system to get rid of unneeded substances. The endocrine system monitors kidney function so that the cell will have the best internal temperature.

Evolution of Excretory System

The excretory system has evolved from a series of tubules in every segment of the body into the complex system that it is now.

Organs

Primary

Liver

Skin

Lungs

Kidneys

Peripheral

Bladder

Urethra

Ureters

Liver

The liver gets rid of overused red blood cells and left over amino acids from the blood and breaks down the waste

Skin

Sweat glands throughout the skin get rid of urea, salts, and water from the blood through sweat.

Lungs

Water vapor and carbon dioxide, products of cellular respiration, are excreted from the body through the lungs.

Kidneys

Filters throughout the kidneys, called nephrons, filter urine from the blood to be excreted.

Ureters, Bladder, & Urethra

The ureters, urinary bladder, and urethra work together to get rid of waste by urine.

Conclusion

The excretory system keeps the body running by getting rid of waste that would not make the body function properly.

Citation Page

Qld science teachers. (2011, November 22). Retrieved from http://www.qldscienceteachers.com/junior-science/biology/excretory-system

Activity 8-2. Human Excretory System. (n.d.). Retrieved from http://www.columbia.edu/~mvh7/STEP/Regents Bio/The endocrine system/human excretory system.pdf

Cliff Notes. (2012). Cliff Notes. Retrieved from http://www.cliffsnotes.com/study_guide/Human-Excretory-System.topicArticleId-8741,articleId-8714.html

Lubey. (n.d.). roderunner.com. Retrieved from http://home.roadrunner.com/~lubehawk/BioHELP!/hexcrsys.htm

Farabee, M. J. (2010, May 18). Excretory System. Retrieved from http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookEXCRET.html

Radar studios, A. (2011). Animal Systems. Retrieved from http://www.biology4kids.com/files/systems_excretory.html