Human Breathing

What is the primary gas exchanged during human breathing?

• Nitrogen

• Hydrogen

• Oxygen

• Carbon dioxide

Which organ in the human body is responsible for the process of breathing?

• stomach

• heart

• liver

• lungs

What is the term used to describe the process of inhaling and exhaling air?

• inspiration

• perspiration

• expiration

• respiration

What is the average number of breaths an adult takes per minute at rest?

• 12-20 breaths per minute

• 50-60 breaths per minute

• 30-40 breaths per minute

• 5-10 breaths per minute

What is the name of the dome-shaped muscle below the lungs that is crucial for breathing?

• diaphragm

• liver

• stomach

• pancreas

During inhalation, which muscle contracts to increase the volume of the chest cavity?

• pectoralis major

• diaphragm

• trapezius

• quadriceps

What is the medical term for the windpipe?

• alveoli

• esophagus

• bronchus

• trachea

What is the role of the diaphragm in the process of breathing?

• The diaphragm helps in digesting food

• The diaphragm assists in hearing sounds

• The diaphragm plays a key role in expanding and contracting the thoracic cavity to facilitate breathing.

• The diaphragm regulates body temperature

What is the name of the tiny air sacs in the lungs where gas exchange occurs?

• Pleura

• Bronchioles

• Trachea

• Alveoli

What is the term for the process of removing carbon dioxide from the body through exhalation?

• Inspiration

• Respiration

• Exhalation

• Inhalation