Respiratory system

Multiple Choice

Which of the following is a function of respiratory system

• Exchange of gases

• Excretion of waste

• Acquired immunity

• carbohydrate synthesis

Multiple Choice

Which of the following is part of the lower respiratory system ?

• Pharynx

• Larynx

• Bronchiole

• Epiglottis

Multiple Choice

The respiratory mucosa of nasal cavity secretes which of the following substances that destroy bacteria?

• Surfactant

• Lysozymes

• Immunoglobulin-A

• Alveolar macrophages

Multiple Choice

Which of the following is an air passageway ?

• Nasopharynx

• Oropharynx

• Laryngopharynx

Multiple Choice

What is the function of Submucosa layer of the trachea ?

• Produces sticky mucus to coat inner lining of trachea.

• Flexibility

• Gives support and elasticity to wall of trachea.

Multiple Choice

Name the part labelled A in the figure.

• Primary bronchus

• Secondary bronchus

• Tertiary bronchus

• Bronchiole

Multiple Choice

which of the following is a feature of terminal bronchiole ?

• Facilitate exchange of air

• have alveoli along their wall

• Split into respiratory bronchioles

Multiple Choice

Gas exchange in the alveoli occurs by

• Active transport

• Simple diffusion

• Exocytosis

• Osmosis

Multiple Choice

Surfactant is present in which of the following ?

• Type I alveolar cells

• Type II alveolar cells

Multiple Choice

Which of the following is the function of Larynx ?

• Filter, moisten & warm the air

• Connect nasal & oral cavities to the larynx

• Contain vocal chords for sound production

• Allow passage of air to the bronchi

Multiple Select

Which of the following occurs during inspiration ? Select all that apply.

• External intercostals contract

• External intercostals relax

• Diaphragm relaxes

• Diaphragm contracts

Multiple Choice

Which of the following occurs during exhalation ?

• Muscles contract

• Thoracic volume decreased

• Ribs expand

• alveolar pressure lesser than atmospheric pressure