Respiration quiz

The movement of air into and out of the lungs is called

• Breathing/ pulmonary ventilation

• Cellular respiration

• Exhalation

• Inhalation

Air moves into the lungs because

• the volume of the lungs decreases with inspiration.

• the gas pressure in the lungs is less than outside pressure.

• the thorax is muscular.

• contraction of the diaphragm decreases the volume of the pleural cavity.

• All of the answers are correct.

When the diaphragm and external intercostal muscles relax,

• the volume of the thorax increases.

• the volume of the thorax decreases.

• the volume of the lungs increases.

• inspiration occurs.

• the lungs collapse.

Which of the following muscles are involved during forced expiration?

• Internal intercostal muscles and abdominal muscles

• Internal intercostal muscles and diaphragm

• External intercostal muscles and abdominal muscles

• External intercostal muscles and diaphragm

• Scalene and sternocleidomastoid muscles

Boyle's law states that gas volume is

• directly proportional to pressure.

• directly proportional to temperature.

• inversely proportional to pressure.

• inversely proportional to temperature.

Alveolar pressure during expiration

• increases.

• decreases.

• doesn't change.

• is zero.

Which statement is FALSE?

• The goblet cells secrete mucus for trapping of inhaled particles.

• The ciliated epithelium requires a water layer for transport of mucus to the pharynx.

• Mucociliary movement helps to sweep foreign substances upwards.

• The mucus layer lies in-between the cilia and saline to trap inhaled particles.

Vital capacity is calculated by adding the following together

• Inspiratory capacity and forced respiratory capacity.

• Tidal volume and expiratory reserve volume.

• Inspiratory capacity and expiratory reserve volume.

• Residual volume and expiratory reserve volume.

• Tidal volume, inspiratory reserve volume, expiratory reserve volume and residual volume

Which statement is true? The

• bronchial circulation has a low vascular resistance

• pulmonary circulation has a low compliance

• bronchial circulation experiences an average pressure of 24/8 mmHg

• pulmonary circulation has low vascular resistance but high compliance

• bronchial circulation has a high vascular resistance and is concerned with gaseous exchange.

   

The pulmonary circulation

• carries oxygenated blood to the tissues.

• includes the venae cavae and the aorta.

• has an average pressure of 120/80mmHg

• is a low-pressure system.

• has a high vascular resistance.