Human Respiratory system

The structures the trachea branch into?

• Alveoli

• Bronchi

• Bronchioles

• Epiglottis

The correct labelling of the diagram is

• A- Bronchi B- Trachea C- Bronchiole D- Diaphragm

• A- Bronchiole B- Trachea C- Bronchi D- Diaphragm

• A- Trachea B- Bronchi C- Diaphragm D- Bronchiole

• A- Trachea B- Bronchi C- Bronchiole D- Diaphragm

Which of these is an adaptation for efficient gas exchange in the air sacs?

• Thin walls

• Rich supply of blood vessels

• Large numbers

• All the above

During swallowing of food, the opening to _______ is covered by epiglottis.

• Trachea

• Pharynx

• Oesophagus

• Larynx

What is the adaptation of the human alveoli for gaseous exchange?

• Large number of alveoli that are rich with blood capillaries

• Surface of the alveoli is folded and thin

• Surface of the alveoli is smooth & dry

• Wall of the alveoli is thick and moist

Which is the correct air passage in the breathing mechanism?

• Nostril, nasal cavity, pharynx, larynx, trachea, bronchus, bronchiole, alveolus

• Nostril, nasal cavity, larynx, pharynx, trachea, bronchus, bronchiole, alveolus

• Nostril, nasal cavity, pharynx, larynx, trachea, bronchiole, bronchus, alveolus

• Nostril, nasal cavity, trachea, larynx, pharynx, bronchus, bronchiole, alveolus

the exchange of gases ocuurs in --------------

• nose

• mouth

• alveoli

The larynx is also known as the...

• Voice box

• Airway

• Long vein

Muscular structure that helps to expand and contract the lungs, forcing air in and out

• Pharynx
• Nasal cavity
• Alveoli
• Diaphragm

Passage way that moistens the air and has hairs to trap dust and particles

• Nasal cavity
• Bronchi
• Mouth cavity
• Larynx