Explanation:
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Breathing starts at the nose and mouth. You inhale air into your nose or mouth, and it travels down the back of your throat and into your windpipe, or trachea. Your trachea then divides into air passages called bronchial tubes.
For your lungs to perform their best, these airways need to be open during inhalation and exhalation and free from inflammation or swelling and excess or abnormal amounts of mucus.
The LungsAs the bronchial tubes pass through the lungs, they divide into smaller air passages called bronchioles. The bronchioles end in tiny balloon-like air sacs called alveoli. Your body has over 300 million alveoli.
The alveoli are surrounded by a mesh of tiny blood vessels called capillaries. Here, oxygen from the inhaled air passes through the alveoli walls and into the blood.
After absorbing oxygen, the blood leaves the lungs and is carried to your heart. Your heart then pumps it through your body to provide oxygen to the cells of your tissues and organs.
As the cells use the oxygen, carbon dioxide is produced and absorbed into the blood. Your blood then carries the carbon dioxide back to your lungs, where it is removed from the body when you exhale.
Answer:
Technologies that have been in existence for long:
1. Use of Contraceptives
2. Abortion
3. Cesarean section
New technologies over the last 30 years includes:
1. Paternity testing
2. Tests to know the sex of an unborn child.
3. Artificial insemination
Explanation:
The goal of reproductive technologies is for efficiency in the provision of safe and affordable Care during pregnancy and for these pregnant women to deliver healthy and strong babies.
For old technologies:
1. Contraceptives allows people control over fertility.
2.Abortion done by a licensed professional is used to terminate a pregnancy.
3. Cesarean section is the surgical removal of a baby from the womb.
For new technologies:
1. Paternity testing is the use of DNA to know if a man is the biological parent of a child.
2. Sex or gender test is done before delivery to know if a child is a boy or girl.
3. Artificial insemination is a fertility process where sperm is introduced directly into a woman's cervix for the purpose of pregnancy.
Answer:
A. helps remove sweat from the body
Explanation:
