Chapter 1 Flashcards
What is the main function of the circulatory system in organisms?
To transport nutrients, gases, and waste products throughout the body.
True or False: The circulatory system consists of the heart, blood vessels, and blood.
True
What are the two main types of circulatory systems found in organisms?
Open circulatory system and closed circulatory system.
Fill in the blank: In an open circulatory system, ___________ is not contained within vessels.
Blood
What is the fluid that transports materials in an open circulatory system called?
Hemolymph
True or False: In closed circulatory systems, blood is contained within vessels.
True
What is the main advantage of a closed circulatory system over an open circulatory system?
Efficient delivery of nutrients and removal of waste products.
What is the name of the main pumping organ in the circulatory system?
Heart
Fill in the blank: Arteries carry blood _______ from the heart.
Away
Fill in the blank: Veins carry blood _______ the heart.
Toward
What is the function of capillaries in the circulatory system?
To allow for the exchange of nutrients and gases between blood and tissues.
True or False: Red blood cells are responsible for transporting oxygen in the blood.
True
What is the protein in red blood cells that binds to oxygen called?
Hemoglobin
Fill in the blank: White blood cells are responsible for defending the body against ________.
Pathogens
What is the main waste product excreted by the respiratory system?
Carbon dioxide
True or False: The respiratory system is responsible for the exchange of oxygen and carbon dioxide between the body and the environment.
True
What is the main organ of the respiratory system where gas exchange occurs?
Lungs
Fill in the blank: Oxygen is transported in the blood by binding to the protein called ________.
Hemoglobin
What is the function of the digestive system in organisms?
To break down food into nutrients that can be absorbed by the body.
True or False: The digestive system consists of organs such as the stomach, small intestine, and liver.
True
What is the main organ of the digestive system where food is broken down and digested?
Stomach
Fill in the blank: Nutrients from digested food are absorbed in the ______ intestine.
Small
What is the main function of the excretory system in organisms?
To remove waste products from the body.
True or False: The excretory system consists of organs such as the kidneys, bladder, and skin.
True
