Gas Exchange in Humans

Front

Correct sequence of air passage into the lungs?

Back

larynx → trachea → bronchi → air sacs

Front

Correct sequence of air passage into the lungs?

Back

larynx → trachea → bronchi → air sacs

Front

What is the importance of the mucus in the nasal cavity?

Back

It helps remove dust from the incoming air.

Front

Which feature of the respiratory tract helps to warm the inhaled air?

Back

The wall of the nasal cavity is richly supplied with capillaries.

Front

Which of the following structures is supported by cartilage? aorta, oesophagus, bronchus, vena cava

Back

bronchus

Front

Which of the following correctly describes the functioning of the human breathing system?

Back

The diaphragm muscle contracts during inhalation. Explanation: During inhalation, the diaphragm contracts and moves downward, increasing the volume of the thoracic cavity and allowing air to flow into the lungs.

Front

Which statement about breathing is correct?

Back

The contraction of the diaphragm muscles causes the lungs to expand.

Front

Function of the cilia lining the trachea?

Back

to move mucus away from the trachea

Front

When you breathe, your lungs take in ___ and remove ___.

Back

oxygen/carbon dioxide

Front

The air sacs that are covered with capillaries where gas exchange takes place

Back

alveoli