Qulz 3 Sping 2018 Biology 1552 Due Monday April 2 in class Worth 25 points 1. Du
ID: 3514758 • Letter: Q
Question
Qulz 3 Sping 2018 Biology 1552 Due Monday April 2 in class Worth 25 points 1. During normal resting puimonary ventiation, ALL of the following ane true EXCEPT a) the phrenic nerve stimulates contraction of the diaphragm b) neurons in the medula oblongata generate action potentials to intercostal nerves c) the diaphragm contracts during expiration d) air comes into lungs during irspiration because intrapuilmonary pressure fals below atmospheric pressure 2. When the diaphragm contracts, it moves inferiorly, causing a) a decrease in the volume of the thoracic cavity b) an increase in the volume of the thoracic cavity c) a decrease ? pressure on conterts of the abdomropeic cavity d) an increase in pressure in the thoracic cavity 3. Ifyou held your breath for 30 seconds, what changes would be found in your blood chemistry? (a) CO2 levels decrease and pH decreases b) CO2 levels decrease and pH increases (c) CO2 levels increase and pH decreases d) CO2 levels increases and pH increases 4. Where would you expect to find the highest PCO2? a) In Systemic veins b) n Tissue Fluids c) In Systemic arteries d) In Pulmonary arteries e) More than one above (ff you choose this answer, write the PC02 Value of each) 5.Which of the following is NOT a cause of Hypoxic Hypoxemia? a) Poor gas difusion due to emphesyma b) Hypovenblation due to damage to phrenic nerve c) Low numbers of red blood cells d) carbon monoxide poisoning 6. Contraction of Rectus Abdominis muscles occurs during forceful expiration a) True b) False 7. Elevation in blood CO2 levels resuts in an increase in pH of Cerebrospinal Fuid (a) True (b) False 8. Most of the CO2 transporled in the blood is in the form of Bicarbonale ion. (b) False (b) False water and sodium into the tubule fluid for the formation of urine (a) True --_alnahealthy kidney, 100% ofglucose rhe blood is filered by the gonenu. (a) True 10. When reabsorpion occurs in the nephron, it results in adding substances such as (a) True (b) Fase a) Label A b) Label B c) Label C d) Label D e) Label E ?1.hthe figure below, which area ofthe nephron is sie ofgreatest ?rt of N,. 2. In the figure below, which area of the nephron is for variable water reabsorption at times of dehydration?Explanation / Answer
22.1. D
2. B- increase the volume un thoracic cavity
3. C- co2 increase ph decrease
4. A - in systemic veins
5. B
6. True- expiration leads to contractuon of rectus abdominis
7. True
8.true
9. True
10. False
11.
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