Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 46, Problem 7TYU
Test Your Understanding
7. According to Fick’s law of diffusion, a gas will diffuse faster if the (a) surface is reduced (b) difference in pressure is decreased (c) difference in pressure is increased (d) pH is lowered (e) a and c
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7. All the following increase the rate of diffusion of gases through
the respiratory membrane EXCEPT:
(a) Surface area of respiratory membrane
(b) Pressure gradient across the membrane
(c) Thickness of the membrane
(d) Temperature
8. All the following increase cause shift of O2 - HB dissociation
curve to the right EXCEPT:
(a) Increase temperature
(b) Increase CO2
(c) Increase pH
(d) Increase 2,3-diphosphoglycerate (2,3-DPG)
9. The powerful phagocytic blood cell is:
(a) Eosinophil
(b) Neutrophil
(c) Lymphocyte
(d) Monocyte
10. The pacemaker of the heart is:
(a) The atrioventricular node
(b) The sinoatrial node
(c) The atrioventricular bundle
(d) The bundle branches
11. Contractility of the heart is increased by:
(a) Exercise
(b) Parasympathetic stimulation
(c) Bleeding
(d) Heart failure
12. P-wave in electrocardiogram (ECG) means:
(a) Ventricular contraction
(b) Atrial contraction
(c) Ventricular relaxation
(d) Atrial relaxation
13. Which gastric gland secretes pepsinogen?
(a) Mucus…
Identify 3 physical conditions that can optimize rate of diffusion of a gas across a membrane, and relate these to Fick’s Law of Diffusion.
All human systems have the concept involving the flow of a molecule through system structures.
(a) Using a flowchart (word, with > symbols), illustrate the path of air during exhalation.
(b) Describe the muscular action of the diaphragm during exhalation.
I forgot explain and tell me why
Chapter 46 Solutions
Biology (MindTap Course List)
Ch. 46.1 - Compare the advantages and disadvantages of air...Ch. 46.1 - What are some advantages of gas exchange in air...Ch. 46.2 - Describe the following adaptations for gas...Ch. 46.2 - Why are specialized respiratory structures...Ch. 46.2 - How does gas exchange differ among the following...Ch. 46.2 - How does the countercurrent exchange system...Ch. 46.3 - Prob. 3LOCh. 46.3 - Prob. 4LOCh. 46.3 - Prob. 5LOCh. 46.3 - Describe the regulation of breathing in humans and...
Ch. 46.3 - What is the sequence of inhaled airflow through...Ch. 46.3 - Prob. 2CCh. 46.3 - Prob. 3CCh. 46.3 - Prob. 4CCh. 46.4 - Prob. 7LOCh. 46.4 - Prob. 1CCh. 46.4 - Prob. 2CCh. 46 - Test Your Understanding 1. Which of the following...Ch. 46 - Prob. 2TYUCh. 46 - Prob. 3TYUCh. 46 - Prob. 4TYUCh. 46 - Test Your Understanding 5. Which sequence most...Ch. 46 - Prob. 6TYUCh. 46 - Test Your Understanding 7. According to Ficks law...Ch. 46 - Prob. 8TYUCh. 46 - Prob. 9TYUCh. 46 - Prob. 10TYUCh. 46 - Test Your Understanding 11. VISUALIZE Draw and...Ch. 46 - Test Your Understanding 12. EVOLUTION LINK What...Ch. 46 - Test Your Understanding 13. INTEREPT DATA Look at...Ch. 46 - Test Your Understanding 14. PREDICT What problems...Ch. 46 - Prob. 15TYUCh. 46 - EVOLUTION LINK Aquatic mammals such as whales and...Ch. 46 - Prob. 17TYU
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- Test Your Understanding 12. EVOLUTION LINK What are the advantages of having millions of alveoli rather than a pair of simple, balloonlike lungs?arrow_forwardTest Your Understanding 1. Which of the following is a benefit of gas exchange in air compared with gas exchange in water? (a) air has a higher concentration of molecular oxygen (b) oxygen diffuses more slowly in air (c) no energy is required for ventilation (d) moist respiratory surface is not needed (e) air is denser than waterarrow_forwardTest Your Understanding 13. INTEREPT DATA Look at Figure 46-10b. How would strenuous muscle activity affect the oxygenhemoglobin dissociation curve? (Hint: How does muscular activity affect pH? See Chapter 40 if you need to review this concept.) Figure 46-10 Oxygen-hemoglobin dissociation curvesarrow_forward
- Test Your Understanding 5. Which sequence most accurately describes the flow of air in the human respiratory system? 1. pharynx 2. bronchus 3. trachea 4. larynx 5. alveolus 6. Bronchiole (a) 4, 1, 3, 2, 5, 6 (b) 1,4, 3, 2, 5, 6 (c) 4, 1,3, 2, 6, 5 (d) 1, 4, 3, 2, 6, 5 (e) 1, 3, 4, 2, 6, 5arrow_forwardWhat are 3 physical conditions that can optimize the rate of diffusion of a gas across a membrane (contained in Fick’s Law)?arrow_forwardequation. Droduct Property ess Your Learning Direction: Write the capital letter of the correct answer. 1. Which of the following statements about the human respiratory system is NOT TRUE? A. when we breathe in, air travels from the pharynx to the trachea B. the bronchioles branch into bronchi C. Alveolar ducts connect to the alveolar sacs D. gas exchange between the lungs and the blood takes place in the alveolus 2. Which of the following statements about the circulatory system is NOT TRUE? A. blood in the pulmonary vein is deoxygenated B. blood in the inferior vena cava is deoxygenated C. blood in the pulmonary artery is deoxygenated D blood in the gorto in ouganntodarrow_forward
- Identify 3 physical conditions that can optimize rate of diffusion of a gas across a membrane, and relate these to Fick’s Law of Diffusion. Please describe 3 ways animal respiratory systems have evolved in order to maximize the exchange of O2and CO2across their membranes.arrow_forwardVentilators are often used for individuals with COVID-19 to increase the rate of diffusion of gases across the alveoli. Ventilators could increase the rate of diffusion by impacting which factor of Fick’s law of membrane diffusion: a decreasing the diffusion coefficient (D) b decreasing surface area (A) c increasing the partial pressure difference (P1-P2) d increasing the diffusion distance e all of the abovearrow_forwardincluding Fick's law, what are three physical conditions that can optimize the rate of diffusion of a gas across a membrane?arrow_forward
- Respiratory System Examine an H&E slide of a transverse section of the trachea provided by the diagram: 1.a) Still at a high power, how many nuclear (cell) layers can you observe? 1. b) Why is the epithelium called pseudostratified? 2.a) Look for goblet cells; what three functions do mucus produced by these cells serve?i.ii.iii. 2.b) Besides globlet cells, what other four types of cells are present in the epithelium?I.ii.iii.iv. 3. The epithelium is supported by a lamina priopria of loose connective tissue. Which two connective tissue fibres occur in this sub-layer?i.ii.arrow_forward49) Before air begins to exit the lungs (exhalation), after inhalation occurs: Group of answer choices The pressure in the alveoli increases Air flows into the lungs The volume of the alveoli stays the same 50) Refractory periods in cardiac muscle are longer in duration than in skeletal muscle. Group of answer choices False True 51) According to Henry’s Law, if the partial pressure of a gas increases, the amount of that gas that can dissolve in a liquid _______________. Group of answer choices Decreases Increases Stays the same 52) If oxygen decreases to very low levels, the heart responds initially by decreasing the heart rate. Group of answer choices False Truearrow_forwardCan you create me a concept map of “Respiratory and Circulatory system”.... Need help without help of the internet. I atleast need 20 bubbles and arrows connected together. Ps. Thankyou.arrow_forward
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