18 Questions
What is the main purpose of the breathing system?
To get oxygen needed for respiration and eliminate waste carbon dioxide
Which process is also known as inhalation?
Breathing in air, including oxygen, into the lungs
Where does gas exchange take place in the respiratory system?
Alveoli
What happens to oxygen in the alveoli?
It is transferred into the blood
Why do muscle cells need oxygen and glucose slowly?
To prevent sudden energy spikes
How does the body control the pulse rate during exercise?
By increasing the breathing rate
What is the main function of the circulation system in the body?
Carry dissolved food and oxygen to the body's cells
Which part of the circulatory system is responsible for exchanging materials by diffusion between the blood and the interstitial fluid?
Blood vessels
What type of circulatory system do humans have?
Closed circulatory system
Which chamber of the heart receives oxygen-poor blood from the body?
Right atrium
What is the main function of the pulmonary circuit in circulation?
Exchange gases in the lungs
Which blood pathway starts from the right side of the heart, goes to the lungs, and returns to the left side of the heart?
Pulmonary circuit
What is the main function of the thin walls of alveoli in the lungs?
To allow for quick gas exchange between lungs and blood
What is the main difference in the composition of nitrogen between inhaled and exhaled air?
Exhaled air has more nitrogen
Which gas shows a significant decrease in percentage from inhaled to exhaled air?
Oxygen
What is the consequence of lactic acid build-up in muscle cells during anaerobic respiration?
Causes fatigue and cramping
Which type of respiration occurs when oxygen and glucose are readily available to cells?
Aerobic respiration
What happens when the body cannot supply cells with enough oxygen for glucose breakdown?
Anaerobic respiration occurs
Learn about how the body releases energy through respiration and how oxygen is acquired through the breathing system. Understand the relationship between oxygen, glucose, muscle cells, blood circulation, and pulse rate.
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