Excretory Organs and Body Systems

Study Notes

Lungs as an Excretory Organ

Lungs are spongy structures located inside the chest cavity.
They help to remove carbon dioxide and excess water vapor from the body during exhalation.
During cellular respiration, cells produce energy and carbon dioxide as a waste product.
This carbon dioxide diffuses into the bloodstream and then into the alveoli of the lungs.
Oxygen is taken into the body during inhalation, and carbon dioxide is released during exhalation.

Kidneys as an Excretory Organ

Kidneys are located in the upper part of the abdominal cavity.
They filter waste products from the blood, producing urine.
Pure blood is returned to the heart.
Urine is collected by the ureters and stored in the urinary bladder.

Body Systems

Integumentary System:
- Includes the skin,
- protects the body from germs and injury.
- Sweat and blood vessels are located within the skin.
Circulatory System:
- Includes the heart and blood vessels.
- Transports blood throughout the body.
- Delivers oxygen, nutrients, and removes waste.
Respiratory System:
- Includes the lungs and air passages.
- Facilitates gas exchange (oxygen in, carbon dioxide out).
Nervous System:
- Includes the brain, spinal cord, nerves, and sense organs.
- Coordinates and regulates body functions.
Urinary System:
- Includes the kidneys, bladder, ureters, and urethra.
- Filters waste from the blood, produces urine, and eliminates it from the body.

Cells and Tissues

A cell is the basic unit of life in all organisms.
Cells have different shapes and sizes, and each type has specific functions.
Different cells working together form tissues.
Tissues are groups of similar cells with a common function.
Organs are made up of different tissues working together.
Organs that work together form body systems.

Description

Explore the roles of the lungs and kidneys in the excretory process and understand their importance in maintaining the body's balance. This quiz covers essential functions of the integumentary and circulatory systems as well. Test your knowledge of how these organs work together to remove waste from the body.