Cornell Notes Flashcards
Understand the Information
How does exercise affect our bodies?
- The heart rate goes up
- We breathe faster
- Our skin temperature decreases because the heart is pumping blood out into the body, and blood flow is going into muscles.
- We are breathing faster because we need to take in oxygen and get rid of carbon dioxide, and our bodies produce more carbon dioxide as we exercise.
Why does our heart rate increase with exercise?
Heart rate increases as blood pumps to aid muscle movement during exercise, facilitating blood flow to cells for food and oxygen.
Why do we breathe heavier when we exercise?
Exercising causes increased breathing due to the body’s need to absorb oxygen and eliminate carbon dioxide.
How do we use the word energy? How do we measure energy?
Energy is a crucial concept in class, referring to the ability to accomplish tasks using various tools or a calorie, a unit of a food’s energy.
What reaction takes place in our bodies to give us energy?
The body uses cellular respiration to generate CO2 and H20 from food molecules and oxygen, providing energy for human activities.
How does food burning outside the body compare with food reacting with oxygen inside of our bodies?
Burning food from the outside differs from the inside due to the transfer of energy outward. Both types of energy use the same reactants, producing carbon dioxide and water through oxygen and food reactions within the body.
