Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 22, Problem 25RQ
Which of the following factors play a role in the oxygen-hemoglobin saturation, dissociation curve?
- temperature
- pH
- BPG
- all of the above
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A healthy person is given 100% oxygen instead of 21%. Which of the following will be true in this person?Dissolved form of O2 will increase but attached O2 with Hb can increase maximum to 100%the dissolved form of O2 will decrease and attached O2 with Hb will increasePaO2 will become 200mmHgattached form of O2 with Hb will double Oxygen carried in dissolved form will not change
Which of the following is the concentration of hemoglobin-bound oxygen in the blood when the heme is fully saturated?
8500 uM
8630 uM
2200 uM
8800 uM
The illustration below shows several oxygen-dissociation curves. Assume that curve
3 corresponds to hemoglobin with physiological concentrations of CO2 and 2,3-BPG
at pH 7. Which curves represent each of the following perturbations?
Saturation (Y)
N
P⁰₂
Loss of quaternary
structure.
Increase in 2,3-BPG
Decrease in CO₂
1. 1
2. 2
3. 3
4. 4
Chapter 22 Solutions
Anatomy & Physiology
Ch. 22 - Visit this site...Ch. 22 - Watch this video...Ch. 22 - Watch this video...Ch. 22 - Which of the following anatomical structures is...Ch. 22 - What is the function of the conchae in the nasal...Ch. 22 - The fauces connects which of the following...Ch. 22 - Which of the following are structural features of...Ch. 22 - Which of the following structures is not part of...Ch. 22 - What is the role of alveolar macrophages? to...Ch. 22 - Which of the following structures separates the...
Ch. 22 - A section of the lung that receives its own...Ch. 22 - The ________ circulation picks up oxygen for...Ch. 22 - The pleura that surrounds the lungs consists of...Ch. 22 - Which of the following processes does atmospheric...Ch. 22 - A decrease in volume leads to a(n) ________...Ch. 22 - The pressure difference between the intra-alveolar...Ch. 22 - Gas flow decreases as ________ increases....Ch. 22 - Contraction of the external intercostal muscles...Ch. 22 - Which of the following prevents the alveoli from...Ch. 22 - Gas moves from an area of ________ partial...Ch. 22 - When ventilation is not sufficient, which of the...Ch. 22 - Gas exchange that occurs at the level of the...Ch. 22 - The partial pressure of carbon dioxide is 45 mm Hg...Ch. 22 - Oxyhemoglobin forms by a chemical reaction between...Ch. 22 - Which of the following factors play a role in the...Ch. 22 - Which of the following occurs during the chloride...Ch. 22 - A low partial pressure of oxygen promotes...Ch. 22 - Increased ventilation that results in an increase...Ch. 22 - Exercise can trigger symptoms of AMS due to which...Ch. 22 - Which of the following stimulates the production...Ch. 22 - The olfactory pits form from which of the...Ch. 22 - A full complement of mature alveoli are present by...Ch. 22 - If a baby is bom prematurely before type II cells...Ch. 22 - When do fetal breathing movements begin? around...Ch. 22 - What happens to the fluid that remains in the...Ch. 22 - Describe the three regions of the pharynx and...Ch. 22 - If a person sustains an injury to the epiglottis,...Ch. 22 - Compare and contrast the conducting and...Ch. 22 - Compare and contrast the right and left lungs.Ch. 22 - Why are the pleurae not damaged during normal...Ch. 22 - Describe what is meant by the term lung...Ch. 22 - Outline the steps involved in quiet breathing.Ch. 22 - What is respiratory rate and how is it controlled?Ch. 22 - Compare and contrast Daltons law and Henrys law.Ch. 22 - A smoker develops damage to several alveoli that...Ch. 22 - Compare and contrast adult hemoglobin and fetal...Ch. 22 - Describe the relationship between the partial...Ch. 22 - Describe three ways in which carbon dioxide can be...Ch. 22 - Describe the neural factors involved in increasing...Ch. 22 - What is the major mechanism that results in...Ch. 22 - Dining what timeframe does a fetus have enough...Ch. 22 - Describe fetal breathing movements and their...
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- A partial pressure gradient of oxygen exists between ________. a. air and lungs b. lungs and metabolically active tissues c. air at sea level and air at high altitudes d. all of the abovearrow_forwardOxyhemoglobin forms by a chemical reaction between which of the following? hemoglobin and carbon dioxide carbonic anhydrase and carbon dioxide hemoglobin and oxygen carbonic anhydrase and oxygenarrow_forwardBreathing _______. a. ventilates the lungs b. draws air into airways c. expels air from airways d. causes reversals in pressure gradients e. all of the abovearrow_forward
- True or false? Human lungs hold some air even after forced exhalation.arrow_forwardA low partial pressure of oxygen promotes hemoglobin binding to carbon dioxide. This is an example of the ________. Haldane effect Bohr effect Daltons law Henrys lawarrow_forwardwhich of the following is true regarding Bohr effect?Increased CO2 in the blood displaces Oxygen from Hbcarbon dioxide onverts into bicarb form makes easier for oxygen to get attached with Hbincreased O2 in the blood decreases CO2 in the bloodit caused left shift of O2-Hb dissociation curvearrow_forward
- Referring to the loading and unloading of oxygen from hemoglobin (as illustrated in the figure), which of the following statements is correct? Oxygen Dissociation Curve.png Group of answer choices When a person in ventilating at rest, 75% of hemoglobin is still oxyhemoglobin The percent saturation of hemoglobin is higher at higher partial pressures of oxygen A decrease in the pH of the blood would promote unloading oxygen from the hemoglobin All of these are correctarrow_forwardLowering the pH from 7.4 to 6.8, which can occur during heavy respiration, reduces the Hill coefficient for oxygen binding to hemoglobin. True or Falsearrow_forwardWhich is true about the oxygen-hemoglobin dissociation curve? A decrease in pH decreases hemoglobin affinity for oxygen A decrease in temperature increases hemoglobin affinity for oxygen Oxygen unloads from hemoglobin when tissue PO2 decreases An increase in PCO2 decreases hemoglobin affinity for oxygen All of the abovearrow_forward
- Below is the oxygen saturation curve for myoglobin and hemoglobin at a pH of 7. The p50 for myoglobin is indicated by the dashed lines on the graph. Mb and Hb O2 saturation: pH 7 10 0.8 Myoglobin 0.6 P50 = 0.2 0.4 Hemoglobin 0.2 - 0.0 pO2 [kPa] Which of these molecules (Mb/Hb/neither or both) has cooperativity? [ Select ] What would you expect to happen to the p50 of myoglobin if the pH were decreased to a pH of 4? [ Select ] Fraction saturationarrow_forwardWith the Bohr effect, more oxygen is released to the tissues because: a decrease in pH weakens the hemoglobin-oxygen bond a decrease in pH strengthens the hemoglobin-oxygen bon Oan increase in pH strengthens the hemoglobin-oxygen bond an increase in pH weakens the hemoglobin-oxygen bondarrow_forwardSometimes Don prefers to dive simply by holding his breath. Based on the following oxygen saturation curve, explain why hyperventilating before a dive where you hold your breath will have little effect on the oxygen content of your body, given that the Pog of the lung capillaries is 100 mmHg during normal respiration at sea level. OxyHemoglobin Dissociation Curve 100 40 20 30 10 20 0 40 s0 60 TO NO 90 100 11O 1300 10 Pa02 ORnCeus.com Sa02arrow_forward
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