Question

directions: use your notes to complete the sentence with the words in the word bank. misspelled words will be counted wrong.
word bank
alveoli, arteries, atria, bronchi, capillaries, carbon dioxide, circulatory, closed, diaphragm, diffusion, four, gills, larynx, open, oxygen, phloem, stomata, trachea, transpiration, veins, ventricles, xylem

1. the ______________ is also called the windpipe and connects the pharynx to the lungs. (4)
2. gas exchange occurs in tiny air sacs called ______________. (5)
3. the ______________ is a large muscle below your lungs that helps you breathe. (5)
4. the voice box is also known as the ______________. (4)
5. the two tubes that lead into the lungs are called ______________. (5)
6. your respiratory system takes in ____________ and removes ____________ from your body. (3)
7. the upper chambers of the heart are called ______________. (8)
8. the lower chambers of the heart are called ______________. (8)
9. ______________ carry blood away from the heart and have thick walls. (9)

Explanation:

1. The trachea is the windpipe connecting pharynx to lungs.
2. Alveoli are tiny air - sacs for gas exchange.
3. Diaphragm is the large muscle below lungs aiding breathing.
4. Larynx is the voice box.
5. Bronchi are the two tubes leading into lungs.
6. Respiratory system takes in oxygen and removes carbon dioxide.
7. Atria are the upper heart chambers.
8. Ventricles are the lower heart chambers.
9. Arteries carry blood away from heart with thick walls.

Answer:

1. trachea
2. alveoli
3. diaphragm
4. larynx
5. bronchi
6. oxygen; carbon dioxide
7. atria
8. ventricles
9. arteries