Câu hỏi Sinh lý học

Which of the following conditions decreases airway resistance?

• Sympathetic stimulation

• Asthmatic attack

• Deep expiration

Which of the following is a Major transport mechanism of CO2 in the blood?

• Dissolving in plasma

• Binding with hemoglobin

• Converting to bicarbonate ions

How many oxygen molecules that one hemoglobin molecule can carry at maximum?

• 2

• 4

• 6

Which of the following changes increases gas diffusion across the membrane?

• Low water solubility of gas

• High membrane thickness

• High surface area of diffusion

Which of the following is the action of depressor area in the medulla oblongata?

• Decrease sympathetic activation

• Produce and release epinephrine

• Send the signal to activate vasoconstriction

What is the action of surfactant?

• Trapping and clearing air particles in the trachea

• Reducing the surface tension in the alveoli

• Moisturizing the air in the nasal cavity

Sensor detecting blood pressure in the artery is called:

• Chemoreceptors

• Osmoreceptors

• Baroreceptors

Which of the following factors is NOT associated with lung compliance?

• Airway resistance

• Alveolar surface tension

• Lung elastic components

Which of the following mechanisms of action increases blood flow to contracting muscle?

• Sympathetic stimulation

• Myogenic autoregulation

• Local metabolic regulation

In healthy person, intrapulral pressure at full inspiration point is:

• Equal to atmospheric pressure

• Higher than atmospheric pressure

• Negative to atmospheric pressure