Grade 12 Biology Respiratory System and Spirometry Quiz

Anatomy Question 1: What are the main organs of the respiratory system?

• Brain, spinal cord, nerves, and eyes

• Pancreas, gallbladder, small intestine, and large intestine

• Heart, liver, stomach, and kidneys

• Lungs, trachea, bronchi, and diaphragm

Anatomy Question 2: What is the function of the alveoli in the lungs?

• Regulating blood pressure

• Gas exchange

• Storing nutrients

• Producing mucus

Physiology Question 1: How does the process of gas exchange occur in the respiratory system?

• The respiratory system does not play a role in gas exchange.

• Carbon dioxide diffuses into the blood and oxygen diffuses into the air in the alveoli of the lungs.

• Gas exchange occurs through the process of sweating and evaporation from the skin.

• Oxygen diffuses into the blood and carbon dioxide diffuses into the air in the alveoli of the lungs.

Physiology Question 2: What role does the diaphragm play in the process of breathing?

• It contracts and flattens during inhalation, creating a vacuum in the chest cavity and drawing air into the lungs.

• It expands and pushes air out of the lungs during exhalation

• It is responsible for the sense of smell

• It has no role in the process of breathing

Mechanics of Breathing Question 1: Describe the process of inhalation and exhalation.

• Inhalation involves the diaphragm relaxing and moving upward, while the intercostal muscles relax to contract the rib cage, causing air to rush out of the lungs.

• Inhalation and exhalation both involve the diaphragm and intercostal muscles contracting at the same time, causing no change in thoracic cavity size and air pressure.

• The process of inhalation involves the diaphragm contracting and moving downward, while the intercostal muscles contract to expand the rib cage. This creates a larger thoracic cavity, causing a decrease in air pressure, and air rushes into the lungs. Exhalation occurs when the diaphragm and intercostal muscles relax, causing the thoracic cavity to decrease in size, increasing air pressure and forcing air out of the lungs.

• Exhalation occurs when the diaphragm contracts and moves downward, while the intercostal muscles relax, causing the thoracic cavity to increase in size and air to rush into the lungs.

Mechanics of Breathing Question 2: What is the role of the intercostal muscles in breathing?

• Assist in expanding and contracting the ribcage

• Aiding in the absorption of oxygen

• Contracting the diaphragm

• Supporting the function of the vocal cords

Lung Volumes and Capacities Question 1: Define tidal volume and vital capacity.

• Tidal volume is the amount of air that remains in the lungs after a normal exhalation, and vital capacity is the amount of air that remains in the lungs after a maximum inhalation.

• Tidal volume is the maximum amount of air that can be inhaled after a maximum exhalation, and vital capacity is the amount of air breathed in and out during normal breathing.

• Tidal volume is the amount of air breathed out during normal breathing, and vital capacity is the maximum amount of air that can be inhaled after a maximum exhalation.

• Tidal volume and vital capacity are defined as the amount of air breathed in and out during normal breathing, and the maximum amount of air that can be exhaled after a maximum inhalation, respectively.

Lung Volumes and Capacities Question 2: How are lung volumes and capacities measured in spirometry?

• Using a spirometer to record the amount of air inhaled and exhaled by the lungs

• Estimating lung volumes based on the person's height and weight

• Using a stethoscope to listen to the sound of breathing

• Measuring the temperature of the air inhaled and exhaled

Spirometry Measurements Question 1: What is the purpose of conducting a spirometry test?

• To measure lung function

• To assess kidney function

• To test vision

• To measure blood pressure

Spirometry Measurements Question 2: Explain the significance of FEV1/FVC ratio in spirometry.

• It indicates the level of oxygen in the blood

• It helps to assess the presence and severity of restrictive lung diseases

• It helps to assess the presence and severity of obstructive lung diseases.

• It is used to measure blood pressure