Name one organ system found in humans., Respiratory , Cells, Feet, Eyes, What is one function of the human skeleton?, Help us text faster, To give the body shape, protection, and movement, To digest pizza, To pump blood, What is a synovial joint?, A joint that doesn’t move at all, A joint found only in snakes, A freely moving joint like the knee or elbow, A broken joint, What is meant by an antagonistic muscle?, A muscle that argues with you, Two muscles that work together to create movement, A muscle that never relaxes, A muscle that only works at night, Where does mechanical digestion take place?, In the lungs, In the mouth and stomach, In the heart, In the brain, Which gas do we exhale more than we inhale?, Carbon dioxide, Oxygen, Nitrogen, Helium, How are our alveoli adapted for gaseous exchange?, They are very large and thick, They have a large surface area and thin walls, They are filled with bones, They only work at night, What is the danger of the chemical nicotine in vapes and cigarettes?, It improves lung health, It helps you breathe better, It strengthens your heart, It is addictive and harmful to the body, What is the function of a valve in the heart?, To mix blood together, To stop blood flowing backwards, To add oxygen to blood, To slow the heart down, Where does aerobic respiration happen?, In the lungs, In the stomach, In the mitochondria of cells, In the brain.

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