1.Little hairs inside your nasal cavity help filter the air you breathe in, and block dirt and dust from getting into your lungs.Andand trachea(windpipe) contains cilia and mucus, which help filter out pollen, dust, and bacteria.
2.Theytrap and destroy bacteria thatenters through thenose.
3.When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.
4.During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs. This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries.
1. the inside of your nose is called the nasal cavity. A mucous membrane lines your nasal cavity and it helps keep your nose moist. Little hairs (cilia) inside your nasal cavity help filter the air you breathe in, and block dirt and dust from getting into your lungs.
2.The tonsils stop germs entering the body through the mouth or the nose. The tonsils also contain a lot of white blood cells, which are responsible for killing germs.
3. Upon inhalation, the diaphragm contracts
4. Gas exchange occurs within the lower airways, primarily the alveoli
Answers & Comments
Answer:
1.D.
2.B.
3.C.
4.C.
5.D.
Explanation:
1.Little hairs inside your nasal cavity help filter the air you breathe in, and block dirt and dust from getting into your lungs.And and trachea (windpipe) contains cilia and mucus, which help filter out pollen, dust, and bacteria.
2.They trap and destroy bacteria that enters through the nose.
3.When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.
4.During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs. This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries.
5.The diagram is located below the lungs.
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Answer:
1. a
2.b
3.a
4. c
5. c
Explanation:
1. the inside of your nose is called the nasal cavity. A mucous membrane lines your nasal cavity and it helps keep your nose moist. Little hairs (cilia) inside your nasal cavity help filter the air you breathe in, and block dirt and dust from getting into your lungs.
2.The tonsils stop germs entering the body through the mouth or the nose. The tonsils also contain a lot of white blood cells, which are responsible for killing germs.
3. Upon inhalation, the diaphragm contracts
4. Gas exchange occurs within the lower airways, primarily the alveoli
5.The diaphragm is located below the lungs