Respiratory System
Biology ⇒ Human Biology
Respiratory System starts at 6 and continues till grade 12.
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See sample questions for grade 11
A patient is breathing rapidly and deeply after intense exercise. What is the physiological term for this increased rate and depth of breathing?
A person has a tidal volume of 500 mL and a respiratory rate of 12 breaths per minute. What is their minute ventilation?
Describe how the respiratory system works with the circulatory system to maintain homeostasis.
Describe the effect of emphysema on the structure and function of the alveoli.
Describe the effect of high altitude on oxygen uptake in the human body.
Describe the pathway of air from the external environment to the alveoli.
Explain how the respiratory system helps regulate blood pH.
Explain the Bohr effect in relation to oxygen transport.
Explain the difference between external and internal respiration.
Explain the role of the diaphragm in the process of inhalation.
Explain why the trachea is reinforced with C-shaped cartilage rings.
Name the muscle primarily responsible for quiet, relaxed breathing.
A patient with chronic obstructive pulmonary disease (COPD) has a reduced ability to exhale air. Explain how this affects the levels of carbon dioxide in their blood and the potential consequences.
A person is exposed to carbon monoxide (CO) in a poorly ventilated room. Explain why CO poisoning can be fatal, even if oxygen is present in the air.
Calculate the partial pressure of oxygen in the alveoli if the atmospheric pressure is 760 mmHg, the fraction of inspired oxygen is 0.21, and the water vapor pressure in the alveoli is 47 mmHg. (Assume no significant CO₂ in inspired air.)
Describe the changes in partial pressures of oxygen and carbon dioxide as blood flows from the pulmonary artery to the pulmonary vein.
Explain how the structure of the alveolar-capillary membrane facilitates efficient gas exchange.
Explain the physiological mechanism behind the Hering-Breuer reflex and its significance in respiration.
A climber rapidly ascends to a high altitude and begins to experience shortness of breath and confusion. Explain the physiological changes in the respiratory system that lead to these symptoms.
A patient with metabolic acidosis is observed to have rapid, deep breathing (Kussmaul respiration). Explain the physiological reason for this respiratory pattern.
