Question

Fill in the blanks of the bronchioles Air enters the body through the 2. There ate microscopic air sacs called ocated at the 3. Lungs are protected by the 4 Oxygen in the blood combines with Haemoglobin to form​

Answer 1

Answer:

1. Nose.

2.Alveoli.

3. Rib cages.

4.oxihaemoglobin.

Answer 2

Answer:

1)Bronchioles end in tiny air sacs called alveoli, where the exchange of oxygen and carbon dioxide actually takes place. Each person has hundreds of millions of alveoli in their lungs.

Explanation:

2)Alveoli

Alveoli are tiny air sacs in your lungs that take up the oxygen you breathe in and keep your body going. Although they're microscopic, alveoli are the workhorses of your respiratory system. You have about 480 million alveoli, located at the end of bronchial tubes.

3)Your lungs are protected by your rib cage, which is made up of 12 sets of ribs. These ribs are connected to your spine in your back and go around your lungs to keep them safe.

4)Haemoglobin combines with oxygen in the lungs to form a bright red chemical called oxyhaemoglobin.