Respiratory | MCQs

Explanation

• The lungs are the organs responsible for exchanging oxygen and carbon dioxide through the process of respiration.
• They consist of air-carrying tubes (bronchi and bronchioles) and tiny sacs (alveoli) where gas exchange occurs.

Explanation

The medulla or the midbrain is responsible for important bodily functions such as heartbeat and breathing,

It is also responsible for hand-eye coordination and depth perception.

Explanation

Pneumonia is often caused by Streptococcus pneumoniae.

It is a type of bacteria that leads to lung inflammation and infection.

It affecting breathing and oxygen intake.

Explanation

Pneumonia is a form of acute respiratory infection that affects the lungs

The lungs are made up of small sacs called alveoli, which fill with air when a healthy person breathes

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ND2-2-2023

Explanation

Explanation

Explanation

Instead of nostrils, insects breathe through openings in the thorax and abdomen called spiracles.

Insects that are diapausing or non-mobile have low metabolic rates and need to take in less oxygen.

Insects exchange oxygen and carbon dioxide through spiracles (noted by circle)

Explanation

Human blood is red because hemoglobin.

It is carried in the blood and functions to transport oxygen.

It is iron-rich and red in color.

Octopuses and horseshoe crabs have blue blood.

This is because the protein transporting oxygen in their blood, hemocyanin, is actually blue.

Explanation

• The epiglottis is a flap-like structure that covers the larynx (voice box) during swallowing.
• It preventing food and liquids from entering the trachea (windpipe).
• It instead directing them into the esophagus.

Explanation