Human Biology: Concepts and Current Issues - With Access (Custom)
15th Edition
ISBN: 9781323045237
Author: Johnson
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 10, Problem 14TY
Summary Introduction
Introduction:
Partial pressure refers to the amount of pressure that is exerted by a particular gas present in the mixture in case it occupies the same volume on its own. It is basically the hypothetical pressure of that particular gas. In lungs, the partial pressure of the O2 (oxygen) is about 100 mm Hg.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Peripheral chemoreceptors in the aortic bodies and central chemoreceptors respond to changes in which of the following physiologic parameters?
A. H+ alone
B. PO2 alone
C. H+, PCO2 and PO2
D. PCO2 alone
E. Both H+ and PCO2
Which of the following hormones is produced in the hypothalamus and is responsible for stimulating the pituitary gland to release gonadotropins?
A. FSH
B. Estrogen
C. GnRH
D. Progesterone
E. LH
The time it takes for blood to pass through the capillaries of a pulmonary alveolus typically is less than 0.3 seconds. During this time, what will occur?
Select one:
a.
The blood plasma will be cleansed of its entire CO2 content and will be saturated with O2.
b.
An enzyme will catalyze the conversion of oxyhemoglobin to carboaminohemoglobin.
c.
Blood will pick up CO2 and O2 will be released to the alveolus.
d.
Blood will pick up O2 and CO2 will be released to the alveolus.I think this is C or D tell me the answer and why
Which of the following is incorrect?
a. Hemoglobin transports oxygen through the blood from the lungs to the tissues
Ob. None; all the other choices are correct
c. Hemoglobin transports H+ through the blood from the tissues to the lungs
O d. Lower pH increases hemoglobin's O₂-binding affinity
Chapter 10 Solutions
Human Biology: Concepts and Current Issues - With Access (Custom)
Ch. 10 - Should smokers have the right to smoke? Why or why...Ch. 10 - Nonsmokers claim they have a right to smoke-free...Ch. 10 - List at least three functions of your nose.Ch. 10 - Prob. 2CRCh. 10 - Prob. 3CRCh. 10 - Prob. 4CRCh. 10 -
5. Explain what happens to gas pressure in a...Ch. 10 - Prob. 6CRCh. 10 - Prob. 7CRCh. 10 - Prob. 8CR
Ch. 10 - Prob. 9CRCh. 10 - Prob. 10CRCh. 10 - Which of the following lists the order of...Ch. 10 - Prob. 2TYCh. 10 - Much of the respiratory tract is lined with...Ch. 10 - Prob. 4TYCh. 10 - Prob. 5TYCh. 10 - Prob. 6TYCh. 10 - Prob. 7TYCh. 10 -
8. During a breathing cycle, as the diaphragm and...Ch. 10 - Prob. 9TYCh. 10 - Prob. 10TYCh. 10 - Prob. 11TYCh. 10 - Prob. 12TYCh. 10 - Prob. 13TYCh. 10 - Prob. 14TYCh. 10 - Prob. 15TYCh. 10 - Why would someone administering a Breathalyzer...Ch. 10 -
2. At a murder trial, a pathologist is asked...Ch. 10 - Prob. 3AWKCh. 10 - Prob. 4AWKCh. 10 - Prob. 5AWKCh. 10 - Prob. 6AWKCh. 10 - Prob. 7AWK
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- O2 bound to hemoglobin: a. acts the same as physically dissolved oxygen b. Comes off the hemoglobin (dissociates) more easily as you increase the oxygen partial pressure c. exerts a partial pressure d. Comes off the hemoglobin (dissociates) more easily as you increase the acidity (decrease the pH) e. all the options are correct 2. Air convection in mammals is driven by a smaller pressure gradient than blood convection because: a. Bronchioles have a greater resistance to flow than arterioles b. bronchioles tend to have a smaller radius than arterioles and capillaries c. air is easier to move with pressure gradients than blood d. air generally travels farther in your body than does blood e. air is heavier than blood 3. The rate of diffusion of gases is NOT determined by which of the following? a. The area of the surface across which diffusion is occurring b. The mechanical energy…arrow_forwardWhich one of the following statements about the afferent components of the respiratory control system is INCORRECT? Select one: a. In order to stimulate hyperventilation the sympathetic nervous system tricks the carotid body by constricting the capillaries that serve glomus cells; reduced blood flow to the cell causes localised hypoxia triggering a compensatory hyperventilation response even before systemic hypoxia is apparent. b. In type 1 glomus cells of the carotid bodies, hypoxia, hypercapnia and acidosis trigger afferent signalling by inhibiting K+ channels, depolarising the cell membrane, and opening voltage-gated Ca2+ channels that trigger the release of neurotransmitters onto afferent glossopharyngeal nerve fibres. c. Chemoreceptor cells can be found in the carotid body. d. The glossopharyngeal nerve transmits afferent impulses from the carotid body to the ventral respiratory group of neurons.arrow_forwardWhich of the following are true? A. Peripheral Chemo receptors for O2 in H+ ions are found in the carotid and aortic bodies. B. Peripheral chemoreceptors for O2 and H+ ions are found only in the carotid body. C. Peripheral chemoreceptors for O2 and H+ ions are found only in the aortic body. D. O2 and CO2 are monitored in the medulla Choose the correct answerarrow_forward
- Which of these three paracrine chemicals causevasodilation?a. ATPb. adenosinec. nitric oxidearrow_forwardAs lung compliance decreases, the plasma HCO3 in cells moving from the lungs to the heart will: a. increase b. decrease c. stay the samearrow_forwardIf the blood lacked red blood cells but the lungs were functioning normally, A. The arterial PO2 would be normal. B. The oxygen content of arterial blood would be normal. C. Both A and B would apply. D. Neither A nor B would apply Which of the following would be most affected by a decrease in the affinity of hemoglobin for oxygen? A. Arterial PO2 B. Arterial percent oxyhemoglobin saturation C. Venous oxyhemoglobin saturation D. Arterial PCO2arrow_forward
- The chloride shifta. promotes the transport of CO2 in the blood.b. occurs when Cl− replaces HCO3− within red blood cells.c. maintains electrical neutrality in red blood cells and the plasma.d. All of these are correctarrow_forwardThe chemoreceptor reflexes help maintain homeostasis Select one: a. when H+ concentrations decrease. b. when epinephrine levels increase. c. under normal conditions. d. when carbon dioxide levels increase. e. when stimulated by changes in blood osmotic pressure.arrow_forwardWhich of the following statements is true for Bohr effect: a. Bohr effect describes carbon monoxide poisoning. b. Bohr effect prevents oxygen binding to hemoglobin. c. Bohr effect allows effective oxygen discharge in tissues due to higher acidity (decreased pH) than in lungs. d. Bohr effect allows effective oxygen discharge in tissues due to lower acidity (increased pH) than in lungs.arrow_forward
- Which of the following will cause the largest increase in systemic arterial oxygen saturation in the blood?a. an increase in red cell concentration (hematocrit) of 20%b. breathing 100% O2 in a healthy subject at sea levelc. an increase in arterial PO2 from 40 to 60 mmHgd. hyperventilation in a healthy subject at sea levele. breathing a gas with 5% CO2, 21% O2, and 74% N2 at sea levelarrow_forwardWhich of these is a true statement?a. In lung capillaries, carbon dioxide combines with water toproduce carbonic acid.b. In tissue capillaries, carbonic acid breaks down to carbondioxide and water.c. In lung capillaries, carbonic acid breaks down to carbondioxide and water.d. In tissue capillaries, carbonic acid combines with hydrogenions to form the carbonate ion.e. All of these statements are true.arrow_forwardIf the partial pressure of O2 in the plasma islow, how will that affect the movement of O2? ● A. O2 will unload from hemoglobin. ● B. O2 will be converted to HbO2. ● C. O2 will load onto hemoglobin. ● D. O2 will stay bound to hemoglobin and only leave if the red blood cell islocated in a capillary.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Basic Clinical Lab Competencies for Respiratory C...NursingISBN:9781285244662Author:WhitePublisher:Cengage
Basic Clinical Lab Competencies for Respiratory C...
Nursing
ISBN:9781285244662
Author:White
Publisher:Cengage
Infection Prevention and Control; Author: thecityoftoronto;https://www.youtube.com/watch?v=jx9sRYmBW3Q;License: Standard Youtube License