Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Textbook Question
Chapter 42, Problem 4TYU
When you hold your breath, which of the following blood gas changes first leads to the urge to breathe?
- (A) rising O2
- (B) falling O2
- (C) rising CO2
- (D) falling CO2
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When you hold your breath, which of the following blood gaschanges first leads to the urge to breathe?(A) rising O2(B) falling O2(C) rising CO2(D) falling CO2
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
Which of the following is not true with regards to the oxygen-hemoglobin curve?
Chapter 42 Solutions
Campbell Biology: Custom Edition
Ch. 42.1 - Prob. 1CCCh. 42.1 - Three-chambered hearts with incomplete septa were...Ch. 42.1 - Prob. 3CCCh. 42.2 - Explain why blood has a higher 02 concentration in...Ch. 42.2 - Prob. 2CCCh. 42.2 - Prob. 3CCCh. 42.3 - Prob. 1CCCh. 42.3 - Prob. 2CCCh. 42.3 - Prob. 3CCCh. 42.4 - Explain why a physician might order a white cell...
Ch. 42.4 - Prob. 2CCCh. 42.4 - Prob. 3CCCh. 42.4 - Prob. 4CCCh. 42.5 - Why is an internal location for gas exchange...Ch. 42.5 - Prob. 2CCCh. 42.5 - MAKE CONNECTIONS Describe similarities in the...Ch. 42.6 - Prob. 1CCCh. 42.6 - Prob. 2CCCh. 42.6 - Prob. 3CCCh. 42.7 - What determines whether O2 and CO2 undergo net...Ch. 42.7 - How does the Bohr shift help deliver O2 to very...Ch. 42.7 - Prob. 3CCCh. 42 - How does the flow of a fluid in a closed...Ch. 42 - Prob. 42.2CRCh. 42 - Prob. 42.3CRCh. 42 - Prob. 42.4CRCh. 42 - Prob. 42.5CRCh. 42 - How does air in the lungs differ from the fresh...Ch. 42 - How are the roles of a respiratory pigment and an...Ch. 42 - Prob. 1TYUCh. 42 - Blood returning to the mammalian heart in a...Ch. 42 - Prob. 3TYUCh. 42 - When you hold your breath, which of the following...Ch. 42 - Prob. 5TYUCh. 42 - Prob. 6TYUCh. 42 - Prob. 7TYUCh. 42 - DRAW IT Plot blood pressure against time for one...Ch. 42 - EVOLUTION CONNECTION One opponent of the movie...Ch. 42 - Prob. 10TYUCh. 42 - Prob. 11TYUCh. 42 - WRITE ABOUT A THEME: INTERACTIONS Some athletes...Ch. 42 - Prob. 13TYU
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- What is the effect of the following changes on the O2 affinity of myoglobin and hemoglobin? (a) A drop in the pH of blood plasma from 7.4 to 7.2. (b) A decrease in the partial pressure of CO2 in the lungs from 6 kPa (holding one’s breath) to 2 kPa (normal). (c) An increase in the BPG level from 5 mM (normal altitudes) to 8 mM (high altitudes).arrow_forwardHow will the lungs compensate for an acute rise in the partial pressure of CO2 in arterial blood? (1 Sentence MAX- no more than 10 words)arrow_forwardSome Events Related to Breathing 1 increased rate of breathing 2 Nervous stimulation of the diaphragm 3 Increased concentration of CO 2 in the blood 4 Decreased concentration of CO 2 in the blood 5 Chemical stimulation of the respiratory centre The sequence of events that occurs as the breathing rate is increased Is a) 3,5,2,1 and 4 b) 5,3,1,2 and 4 c) 3,2,4,1 abd 5 d) 4,3,5,2 and 1arrow_forward
- Daniel, the swimmer with the fastest time on the college swim team, routinely hyperventilates before a meet, as he says "to sock some more oxygen into my lungs so I can swim longer without having to breathe." "Furthermore, my heart won't have to adjust it's output". First of all, what basic fact about oxygen loading has Daniel forgotten (a lapse leading to false thinking)? Do you think that hyperventilation will provide him with enough oxygen to increase his endurance during the race?arrow_forwardJumping into cold water may initiate the “diving reflex,” during which blood is shunted toward the head and away from the limbs. Under these conditions, why might you be able to hold your breath for an extended period?arrow_forward(a) Define hyperventilation. (b) If you hyperventilate, do you retain or expel more carbon dioxide? (c) What effect does hyperventilation have on blood pH?arrow_forward
- Decreased arterial pH (increased hydrogen ion concentration in the arterial blood) increases depth and frequency of respirations Choose from the following: (A) directly stimulating central chemoreceptors within the fourth ventricle of the medulla oblongata (B) directly stimulates the glomus cells of the aortic and carotid sinuses (C) both A and Barrow_forwardO E-If answers (1), (2), (3) and (4) are TRUE Which of the following is NOT true about the liver lobule? * (1) Bile canaliculi transport bile towards the bile ducts located at the corners of the liver lobule. (2) Sinusoidal capillaries drain into the central vein. (3) Liver lobules are capable of producing plasma proteins such as albumin. (4) The portal arteriole takes blood to the liver lobule, while the portal venule takes blood away from the liver lobule. O A - If answers (1), (2) and (3) are TRUE B - If answers (1) and (3) are TRUE O C- If answers (2) and (4) are TRUE O D- If only answer (4) is TRUE O E- If answers (1), (2), (3) and (4) are TRUE Which of the following is NOT true with regards the oxygen-hemoglobin dissociation curve? * 27°C ere to searcharrow_forwarda 47 year old man has a haemoglobi concentration of 11g/dL.. Pulmonary function is normal. Which of the following values is most likely to be decreased in this patient? (a) Amount of o2 consumption (b) Amount of o2 dissolved in the blood (c) o2 content of the blood (d) o2 saturation of the blood (e) po2 of his bloodarrow_forward
- The amount of air moved in and out of the lungs with each normal resting breath is the (a) vital capacity (b) residual volume (c) vital volume (d) partial pressure (e) tidal volumearrow_forwardScenario: In Charles’ blood, the partial pressure of CO in the blood (0.4 mm Hg) is far lower than the partial pressure of O2, yet the percent saturation of hemoglobin by each gas is approximately equal. What does this tell you about the affinity of hemoglobin for CO?arrow_forwardKeep in mind the chemical reaction: CO2 + H20 H2CO3 H* + HCO3 A patient on a mechanical respirator often suffers from alkalosis because a. excess of oxygen favors reaction to the left side hyperventilation leads to removal of excess of CO2 b. Oc. hyperventilation leads to removal of excess of H* ion along with CO2 as both have increased. Both (b) and (c) are correct. Od.arrow_forward
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