Human Biology

http://www.ck12.org Chapter 1. Human Biology

TABLE1.6:(continued)

Organ(s) Function Component of Other Organ System

Skin Sweat glands remove water, salts,

and other wastes.

Integumentary system

Large intestine Removes solid waste and some wa-

ter in the form of feces.

Digestive system

Kidneys Remove urea, salts, and excess wa-

ter from the blood.

Urinary system

Vocabulary

• excretion: Process of removing wastes and excess water from the body.


• excretory system: Organ system that removes wastes from the body; includes the kidneys, large intestine,
  skin, and lungs.


• homeostasis: Ability to keep a stable internal environment; the ability of the body to maintain a stable internal
  environment despite a changing environment.


• urine: Liquid waste that is formed by the kidneys when they filter wastes from the blood.

Summary

• Excretion is the process of removing wastes from the body.


• Organs of the excretory system include the kidneys, large intestine, skin, and lungs.

Practice

Use the resource below to answer the questions that follow.

• Excretionat http://www.youtube.com/watch?v=DNJosKX_PmA (8:47)

MEDIA

Click image to the left for more content.

1. What is filtered and excreted in the nephron?


2. What two mechanisms govern filtration in the glomerulus?


3. What mechanism leads to ion exchange through a chloride channel?


4. What mechanism leads to ion exchange through a potassium channel?

Review

1. What is excretion?


2. List three organs involved in excretion.