NEW
Font size
WorksheetsRespiratory
Total questions: 21
Worksheet time: 25mins
The process of exchanging oxygen and carbon dioxide from the lungs to capillaries
inspiration
expiration
internal respiration
external respiration
Which gas makes up most of the air in the environment?
oxygen
Carbon Dioxide
Water Vaper
Carbon dioxide and water combine to form...
hydrogen carbonate ions
carbonic acid
hydrogen ions
hydrogen bicarbonate
What enzyme is required for CO2 to be combined with water to make carbonic acid?
Carbonic anhydrase
Carbonase
Carbonic acid
When carbon dioxide binds directly with haemoglobin it forms...
carbon diooxyhaemoglobin
carboxyhaemoglobin
carboglobin
carbaminohaemoglobin
A high concentration of hydrogen ions in the RBC means...
A low pH
A high pH
Close to neutral pH
Partial pressure of carbon dioxide is ___________ in alveolus and ___________ in tissues
High, high
Low, high
Low, low
High, low
Hemoglobin unbound to oxygen is referred to as
Oxyhemoglobin
Carbaminohemoglobin
Methhemoglobin
Deoxyhemoglobin
Which statement truly represents the difference between the two curves?
Curve A represents an haemoglobin that has higher affinity for oxygen at all partial pressures of oxygen
Curve A represents a curve that has higher affinity for haemobloby at only at low partial pressures of oxygen
Curve A represents haemoglobin that will readily release oxygen at all partial pressures
Curve A represents haemoglobin that will not readily bind to oxygen even at high partial pressure of oxygen
If Curve B is "normal" conditions. What would cause the shift to curve A?
Increased body temperatures
Increased Levels of 2,3 DPG
Increased levels of CO2
Increased pH levels
Once H2CO3 (carbonic acid) has formed, what does it dissociate into?
H+ and carbons
Oxygen and Carbons
H+ and bicarbonate (HC03)
Oxygen and bicarbonate (HC03)
The effects of carbon dioxide concentration on the dissociation of oxyhaemoglobin is called the:
Haldane Effect
Bohr Effect
condition of excessive carbon dioxide
hypercapnia
hypoxemia
hyperpnea
hypopnea
Gas exchange at the blood air barrier is efficient because
the differences in partial pressure are substantial
the gases are lipid soluble
the total surface area is large
of all of these
Air moves into the lungs because
the gas pressure in the lungs is less than atmospheric pressure
the volume of the lungs decreases with inspiration
the thorax is muscular
contraction of the diaphragm decreases the volume of the thoracic cavity
the respiratory control center initiates active expansion of the thorax
Which of the factors will shift the oxygen dissociation curve to the right ?
low temperature
high pH
high CO2
low BPG
Which of these are NOT structures in the pons?
Apneustic Center
Ventral Respiratory Group
Pneumotaxic Center
All of these are structures in the pons
The dorsal respiratory group controls
forced inhalation and expiration
forced expiration
forced inhalation
quiet inhalation
