5th Grade – 2nd Quarter Notes
Review: cells – tissues – organs – body system
1. What are the major organs of your
respiratory system?
1. lungs
2. What is respiration?
2. The process of breathing
3. Where does respiration begin?
3. The nose or mouth
4. What is the trachea?
4. The passage through which air
moves (the windpipe)
5. What are the bronchial tubes?
5. Two tubes at the bottom of the
trachea that lead to the lungs
6. What are alveoli?
6. Hollow air pockets in the lungs
where respiration takes place
7. What is the diaphragm?
7. The sheet of muscle at the bottom
of your lungs that helps you breathe
by contracting and relaxing to move
air in and out of the lungs.
8. What are cilia?
8. Tiny hair-like parts of special cells
that line the trachea and bronchial
tubes
9. What is the order in which respiration
takes place in the body?
9. – nose or mouth
- trachea
- bronchial tubes
- alveoli
- bloodstream
10. What are the major parts of your
circulatory system?
10. heart, blood, blood vessels
11. What hard working muscle is the
core of the circulatory system?
11. the heart
12. What are arteries?
12. Large blood vessels that carry
blood away from the heart
5th Grade – 2nd Quarter Notes
13. What are veins
13. Small blood vessels that carry
blood back to the heart
14. What are capillaries?
14. The smallest blood vessels that
connect arteries to veins
15. What is in blood?
15. Plasma – pale yellow and made
mostly of water. It carries nutrients
to the cells of the body.
Red blood cells – carry oxygen to all
cells in the body and carry carbon
dioxide to the lungs
White blood cells – work with the
immune system to keep you healthy
Platelets – Help the blood clot or
thicken to form a scab