Question

who who will answer this question I will mark as brilliant and I will follow him I want this Puli to give this answers please​

Answer 1

Answer:

1. When we inhale air containing dust particles, the particles get trapped in the hair present in out nostrils. Sometimes, these particles may pass through the hair and enter the nasal cavity. The irritate the mucus lining of the nasal cavity, and as a result we sneeze.

2. When we are sleepy or feel drowsy, we yawn because our brain cells lack sufficient amount of oxygen. The deep breath associated with yawning helps us to drawn in more oxygen and supply the much needed oxygen to the tired body organs including the brain

3. A. Inhalation is a part of breathing where the air is taken into the lungs by creating negative pressure by the contraction of respiratory muscles and diaphragm.

-Exhalation is a part of breathing where the air is drawn out of the lungs by the relaxation of respiratory muscles. Inhalation is also called inspiration.

B. Breathing involves inhale of oxygen from the atmosphere into the lungs and exhale of carbon dioxide from the lungs into the atmosphere

-cellular respiration involves breakdown of glucose into carbon dioxide and water in living cells, releasing energy.

4.

Explanation:

ME IF OM WRONG

Answer 2

Answer:

Ans1)

By sneezing, our body tries to expel the dust particles from the air we inhaled so that only clean air enters our body.

Ans 2) When we are sleepy or feel drowsy, we yawn because our brain cells lack sufficient amount of oxygen. The deep breath associated with yawning helps us to drawn in more oxygen and supply the much needed oxygen to the tired body organs including the brain.

question 3

#Inhalation and exhalation

1) Inhalation is a part of breathing where the air is taken into the lungs by creating negative pressure by the contraction of respiratory muscles and diaphragm. 2) Exhalation is a part of breathing where the air is drawn out of the lungs by the relaxation of respiratory muscles.

# Breathing and cellular respiration

1) Breathing involves inhale of oxygen from the atmosphere into the lungs and exhale of carbon dioxide from the lungs into the atmosphere ; whereas 2) cellular respiration involves breakdown of glucose into carbon dioxide and water in living cells, releasing energy.

I am able to do these questions only

but i am not able to add a picture of respiratory system to it.