This lesson covers the respiratory and circulatory systems, focusing on the exchange of oxygen, carbon dioxide, nutrients, and waste. It explains the functions of the lungs and alveoli in the respiratory system and the heart, blood, and blood vessels in the circulatory system. The lesson also discusses how these systems interact with the digestive system to transport nutrients and gases throughout the body.

What are the main objectives of this lesson?

• To study the skeletal system

• To model the process of oxygen and carbon dioxide exchange

• To understand the structure of the heart

• To learn about the nervous system

Tags

NGSS.MS-LS1-8

Which system is responsible for moving oxygen from the air into the body?

• Nervous system

• Digestive system

• Circulatory system

• Respiratory system

What is the primary function of the lungs?

• To pump blood

• To break down food

• To filter waste

• To exchange gases

Where does gas exchange occur within the lungs?

• Bronchi

• Trachea

• Alveoli

• Diaphragm

How does oxygen move from the alveoli into the blood?

• By osmosis

• By active transport

• By diffusion

• By filtration

What are the main components of the circulatory system?

• Heart, blood, and blood vessels

• Brain, spinal cord, and nerves

• Lungs, diaphragm, and alveoli

• Stomach, intestines, and liver

What is the function of the heart in the circulatory system?

• To produce blood

• To pump blood

• To filter blood

• To store blood

What does blood transport throughout the body?

• Oxygen, nutrients, and waste

• Electrolytes, glucose, and lipids

• Hormones, enzymes, and proteins

• Water, vitamins, and minerals

How do the circulatory and digestive systems work together?

• By exchanging gases

• By breaking down food

• By transporting nutrients

• By filtering waste

What process is responsible for the exchange of gases in the alveoli?

• Diffusion

• Active transport

• Osmosis

• Filtration