Cardiopulmonary Anatomy & Physiology
7th Edition
ISBN: 9781337794909
Author: Des Jardins, Terry.
Publisher: Cengage Learning,
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Chapter 8, Problem 5RQ
Summary Introduction
Introduction:
Respiration is a process that involves the exchange of gases between cells and systemic capillaries. The respiratory quotient represents the ratio between the amount of carbon dioxide produced in per unit oxygen consumed. It is represented by RQ.
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The steep part of the O2-Hb dissociation curve...
a.
is where CO2 unloading occurs at the tissue cells
b.
is where the PO2 is high (>90mmHg)
c.
is where the oxyhemoglobin is high (>90 % saturated)
d.
is where O2 unloading occurs at the tissue cells
Part I: Use the information below to answer the following questions:
Subject A: 80 kg VO2max = 54 ml/kg/min RER (respiratory exchange ratio (VCO2/VO2) ) @ 70% VO2max = 0.93 Subject B: 70 kg VO2max = 38 ml/kg/min RER @ 70% VO2max = 0.94
a) Who is burning more total kcals at 70% VO2max?
b) Who is burning more CHO kcals at 70% VO2max?
c) Who is burning more absolute CHO kcals at VO2max?
Part II: Using the information from question #2, calculate the grams of carbohydrates and the grams of lipids that each subject (A and B) is utilizing per minute at 70% VO2max.
3. You are running on the treadmill at the Rec Center and you overhear someone telling their friend that "you burn more absolute fat (kcal/hr) running at 5mph than you do at 7mph".
Do the following conditions cause hemoglobin to release more O2 to the tissues or to absorb more O2?(a) Raising the temperature(b) Increased production of CO2(c) Increasing the H+ concentration
Chapter 8 Solutions
Cardiopulmonary Anatomy & Physiology
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- Chickens also hyperventilate during hot weathers and make their egg brittle. To counter this, the poultry farmer should apply one of the following: a. carbon dioxide bombardment b. adding soda in drinking water c. paper bag method d. incubation of eggs *Choose only one answerarrow_forwardThe movement of gas from an area of higher pressure to an area of lower pressure until the partial pressures in the two areas become equal is caused by ________________. Group of answer choices A the partial pressure gradient B the solubility coefficient C active transport D cellular respirationarrow_forwardList 4 factors that increase O2 extraction to the tissues (muscles).arrow_forward
- The alveoli of mammalian lungs do not contain 20.9% O2 (that is, the percentage of O2 in atmospheric dry air) because A. there is dead space in the trachea and bronchial tree and the air in the lungs is humidified. B. mammals do not normally ventilate the lungs at a high enough rate. C. the trachea and bronchi are too small in volume to contain this amount of O2. D. mammal lungs have too many alveoli to ventilate. E. some O2 has been exchanged with the blood before reaching the alveoli.arrow_forwardIn a study of O2 uptake by muscle at high altitude, a physiologist prepares an atmosphere consisting of 79 mole % N2, 17 mole % 16O2, and 4.0 mole % 18O2. (The isotope 18O will be measured to determine O2 uptake.) The total pressure is 0.75 atm to simulate high altitude. Calculate the mole fraction and partial pressure of 18O2 in the mixture.arrow_forwardwhat kind of research supports (or rejects) the elevated CO2 claim?arrow_forward
- Oxygen travels in the blood in order to reach cells in need of oxygenation. The amount of O2 that travels dissolved in the plasma and not attached onto hemoglobin is approximately a. 98% b. 7% C. 35% d. 2%arrow_forwardWould you expect to find CO2 in your breath? Why?arrow_forwardWhich conditions would curve A most likely resemble? A. An individual with chronic obstructive pulmonary disease B. Increased H+ content C, Low temperatures D. An individual during moderate exercise E. CO2 poisoningarrow_forward
- The respiratory system_______. a. provides body tissues with oxygen b. provides body tissues with oxygen and carbon dioxide c. establishes how many breaths are taken per minute d. provides the body with carbon dioxidearrow_forward3. At birth, the number of alveoli represents; about how much of the total adult gas exchange units? A. 10 percent B. 20 percent C. 30 percent D. 40 percentarrow_forwardGas moves from an area of ________ partial pressure to an area of ________ partial pressure. low; high low; low high; high high; lowarrow_forward
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