Human Anatomy
9th Edition
ISBN: 9780135168059
Author: Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher: Pearson Education, Inc.,
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Textbook Question
Chapter 20, Problem 17RQ
(a) What structural features are responsible for the permeability of capillary walls? (b) Which of these features are absent from brain capillaries in the blood-brain barrier?
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(a) Name the type of blood vessel labelled
(i) C.
(ii) D.
(b) In which direction does blood in vessel A travel?
(c) Which of the four blood vessels contains the most oxygen?
(d) What happens to the amount of oxygen in the blood as it passes through the body organs?
(e) What is the chamber of the heart labelled X?
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The following sequence traces the flow of arterial blood to the left parietal and temporal lobes of the brain. Tell which artery is missing: Blood leaves the heart and passes through the aorta, the left common carotid artery, and the middle cerebral artery. (a) vertebral, (b) brachiocephalic, (c) internal carotid, (d) basilar.
Which of the following statements are true? (a) The left ventricle wall is thicker than the right ventricle wall. (b) The left ventricle pumps blood at a higher pressure than the right ventricle. (c) The left ventricle pumps more blood with each beat than the right ventricle. Explain.
Chapter 20 Solutions
Human Anatomy
Ch. 20 - What structural features of capillaries make them...Ch. 20 - Prob. 2CYUCh. 20 - Prob. 3CYUCh. 20 - Prob. 4CYUCh. 20 - Prob. 5CYUCh. 20 - Prob. 6CYUCh. 20 - Which vessel do you palpate to feel a pulse in...Ch. 20 - Name the vessels that branch off the abdominal...Ch. 20 - Prob. 9CYUCh. 20 - Prob. 10CYU
Ch. 20 - Prob. 11CYUCh. 20 - Prob. 12CYUCh. 20 - How does elevated blood glucose associated with...Ch. 20 - Prob. 14CYUCh. 20 - Prob. 15CYUCh. 20 - Prob. 1RQCh. 20 - Prob. 2RQCh. 20 - Prob. 3RQCh. 20 - Prob. 4RQCh. 20 - Prob. 5RQCh. 20 - Prob. 6RQCh. 20 - Prob. 7RQCh. 20 - Prob. 8RQCh. 20 - The following sequence traces the flow of...Ch. 20 - Prob. 10RQCh. 20 - The inferior mesenteric artery supplies the (a)...Ch. 20 - Prob. 12RQCh. 20 - Prob. 13RQCh. 20 - An accident victim sustained a puncture wound in...Ch. 20 - Prob. 15RQCh. 20 - Prob. 16RQCh. 20 - (a) What structural features are responsible for...Ch. 20 - Prob. 18RQCh. 20 - Prob. 19RQCh. 20 - Sketch the arterial circle at the base of the...Ch. 20 - Prob. 21RQCh. 20 - Prob. 22RQCh. 20 - Prob. 23RQCh. 20 - Prob. 24RQCh. 20 - Differentiate between arteriosclerosis and...Ch. 20 - A pulse can be felt in the following arteries:...Ch. 20 - In an eighth-grade health class, the teacher...Ch. 20 - Prob. 2CRCAQCh. 20 - Prob. 3CRCAQCh. 20 - Prob. 4CRCAQCh. 20 - Prob. 5CRCAQCh. 20 - Prob. 6CRCAQCh. 20 - Occasionally, either the ductus arteriosus or the...Ch. 20 - Prob. 8CRCAQ
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- 1) unoxygenated blood leaves the right ventricle via the .................. to get to the lungs?arrow_forwardThe autonomic centers for cardiac function are located in, (a) myocardial tissue of the heart. (b) cardiac center of the medulla oblongata. (c) the cerebral cortex. (d) a, b, and c are correct.arrow_forward(a) What are the primary forces that cause fluid to move out of a capillary and into the interstitial fluid at its arterial end? (b) What are the primary forces that cause fluid to move into a capillary from the interstitial fluid at its venous end?arrow_forward
- Which of the following are the cardinal signs of cardiac arrest? (A) Apnea, carotid pulses and dilated pulses (B) Pinpoint pulses, absent pulse, flushed skin (C) Cool pale skin and absence of radial pulse (D) Cyanosis, slow pulse and dilated pulsesarrow_forwardWhere is the sinoatrial node located? (A) Between the left atrium and the left ventricle(B) Between the right atrium and the right ventricle(C) In the interventricular septum(D) In the upper wall of the left ventricle(E) In the upper wall of the right atriumarrow_forward1)cardiac output is increased by A) more sympathetic stimulation only B) more sympathetic stimulation, increased end-diastolic volume, and increased stroke volume c). increased end- diastolic volume only D) increased stoke volume only E) increased end-diastolic volume and more sympathetic stimulationarrow_forward
- The _________ regional nuclei of the medulla oblongata is responsible for the origin and stimulation of cranial nerve X. A) cardiac acceletory B) vascular inhibitory C) vascular neutrality D) cardiac inhibitoryarrow_forwardWhich of these events occurs during (ventricular) systole? A)Only the left ventricle contracts. B)The ventricles fill with blood. C)Both ventricles contract. D)The atria fill with bloodarrow_forwardIf blood pressure was to drop, how is the signal transmitted to the central nervous system? a) The baroreceptors decrease the generation of action potentials below their normal level. b) The glassopharyngeal nerve increases the transmission of action potentials, while the vagus nerve does not. c) The baroreceptors increases the generation of action potentials past their normal level. d) The glassopharyngeal nerve decreases the transmission of action potentials, while the vagus nerve does not.arrow_forward
- The two factors that assist the relatively low venous pressures in propelling blood toward the heart are (a) ventricular systole and valve closure. (b) gravity and vasomotion. (c) muscular compression and the respiratory pump. (d) atrial and ventricular contractions.arrow_forwardBlood flow is measured in ............................ Which of the following has the greatest effect on blood flow? Which of the following would not result in a decrease in the blood vessel radius? The diameter of the blood vessel is the same as ................................ The opening of the blood vessel where the blood flows is called the...........................arrow_forwardDuring diastole, the chambers of the heart, (a) undergo a sharp increase in pressure. (b) contract and push blood into an adjacent chamber. (c) relax and fill with blood. (d) reach a pressure of approximately 120 mm Hg.arrow_forward
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