Understanding the Human Respiratory System

What is the primary function of the human respiratory system?

• To digest food

• To circulate blood

• To control body temperature

• To exchange gases

Which part of the respiratory system is also known as the voice box?

• Bronchi

• Trachea

• Pharynx

• Larynx

What prevents food from entering the trachea?

• Epiglottis

• Esophagus

• Cilia

• Diaphragm

What structure in the lungs resembles a bunch of grapes?

• Capillaries

• Bronchioles

• Alveolar ducts

• Alveolar sacs

What role do alveoli play in the respiratory system?

• Producing mucus

• Filtering air

• Warming air

• Gas exchange

Which muscle plays a major role in the process of breathing?

• Diaphragm

• Biceps

• Heart muscle

• Intercostal muscles

How does the body regulate involuntary breathing?

• Through the skeletal system

• By the nervous system using pH

• Using the muscular system

• Through the digestive system

Tags

NGSS.HS-LS1-3

What is the normal blood pH level that the body maintains?

• Around 5.5

• Around 6.8

• Around 7.4

• Around 8.2

Tags

NGSS.HS-LS1-3

Which animals use gills for gas exchange?

• Insects

• Fish

• Mammals

• Birds

What is a common treatment for respiratory distress syndrome in premature babies?

• Antibiotics

• Oxygen therapy

• Artificial surfactants

• Vaccination