EP HUMAN BIOLOGY-MODIFIED MASTERING
8th Edition
ISBN: 9780134326436
Author: Johnson
Publisher: PEARSON CO
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Question
Chapter 8, Problem 9TY
Summary Introduction
Introduction:
The direction of blood flow via the circulatory system is determined by a number of factors, including blood pressure. Blood flows from areas of high pressure to areas of low pressure.
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The blood vessels responsible for variably distributing cardiac output among organs in the body are:
a. Veins
b. Arteries
c. Capillaries
d. Arterioles
All of the following mechanisms assist in returning venous blood to the heart except: a. an increase in heart rate b. pressure changes in the abdominal and thoracic cavities due to breathing c. contraction of skeletal muscles in the legs d. one-way valves located inside veins
The onset of Ventrieular diastole is associated
with:
A. the closing of the aortiC valve
B. the ejection of blood from the ventricles
C. the opening of the atrio-ventricular (AV) valves
D. the first heart sound
Chapter 8 Solutions
EP HUMAN BIOLOGY-MODIFIED MASTERING
Ch. 8 -
1. Who do you want to help you decide which...Ch. 8 - Do you think cost-effectiveness should be a part...Ch. 8 -
1. Why is it so important that the heart always...Ch. 8 - Compare and contrast the structures and functions...Ch. 8 - Prob. 3CRCh. 8 - Describe the function of the heart valves.Ch. 8 - Compare the functions of the pulmonary circuit and...Ch. 8 -
6. Describe the cardiac cycle of relaxation and...Ch. 8 - Describe the function of the SA and AV nodes as...Ch. 8 - Prob. 8CR
Ch. 8 - Prob. 9CRCh. 8 - Prob. 10CRCh. 8 -
1. _______ carry blood away from the heart and...Ch. 8 - Prob. 2TYCh. 8 - Which of the choices represents the order of...Ch. 8 - Prob. 4TYCh. 8 - Prob. 5TYCh. 8 - Prob. 6TYCh. 8 - Prob. 7TYCh. 8 - A pacemaker is used to correct: a. coronary artery...Ch. 8 - Prob. 9TYCh. 8 - Prob. 10TYCh. 8 - Prob. 11TYCh. 8 - Prob. 12TYCh. 8 - Prob. 13TYCh. 8 - Prob. 14TYCh. 8 - Prob. 15TYCh. 8 - Prob. 1AWKCh. 8 - When a coronary artery bypass graft (CABG) is...Ch. 8 - Soldiers have to stand in formation at full...Ch. 8 - Prob. 4AWKCh. 8 - Prob. 5AWKCh. 8 - Ventricular fibrillation is a potentially fatal...Ch. 8 - Prob. 7AWKCh. 8 - Last night, you and your roommate were sound...
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- Match the type of blood vessel with its major function. _____ arteriesa. diffusion _____ arteriolesb. control of blood distribution _____ capillariesc. transport, blood volume reservoirs _____ veinsd. blood transport and pressure regulatorsarrow_forwardContraction of _______ drives the flow of blood through the aorta and pulmonary arteries. a. atria b. veins c. arterioles d. Ventriclesarrow_forwardWhich of the following characteristics is unique to capillaries and not to other blood vessels? A. have low blood pressure B. have high blood pressure C. exchange substances (ions, small molecules and water) between blood and tissues D. carry oxygen and carbon dioxide E. connect to the heart and lungsarrow_forward
- Which of the following statements about the circulatory system is false? A. Blood in the aorta is oxygenated. B. Blood in the pulmonary artery is deoxygenated. C. Blood in the inferior vena cava is deoxygenated. D. Blood in the pulmonary vein is deoxygenated.arrow_forwardWhich of the following is not a characteristic of a capillary? a. Fenestrated capillaries allow for larger amounts of materials to be exchanged. b. Sinusoid capillaries are the main type of capillary around the brain. c. Capillaries often are arranged in a capillary bed that is supplied by an arteriole. d. The capillary wall consists of an endothelium and a basement membrane only—there is no subendothelial layer.arrow_forwardWhich of the following is/are involved in regulating blood pressure? a. heart b. baroreceptors c. cardiovascular center in medulla oblongata d. all of the abovearrow_forward
- When comparing veins and arteries of the same diameter, which of the following statements is not true? Select one: a. Veins have fewer smooth muscle fibers. b. Veins have a larger lumen. c. Veins have more elastic tissue. d. Veins have valves. e. Veins have thinner walls.arrow_forwardConsider a blood clot that formed in a pulmonary venule. If the clot detached, in which of the following vessel types would it be most likely to become stuck? Select one: a. pulmonary vein b. systemic artery c. systemic vein d. pulmonary arteryarrow_forwardThis is used to facilitate the insertion of drainage devices into a venous structure A. Groove director B. Electric spatula C. Arterial tube hemostats D. Cavity injectorarrow_forward
- All of the following occur when the ventricles contract except a. the AV valves close. b. blood is ejected into the aorta. c. the semilunar valves open. d. blood from the pulmonary trunk enters the atria.arrow_forwardThe largest cross-sectional area in the total circulation and lowest blood flow velocity is found in: A. The Aorta. B. The capillaries. C. The Vena Cava. D. The small arteries. E. The Pulmonary Vein.arrow_forwardWhich of the following decreases perfusion of a tissue? a. decreased total blood flow b. vasodilator c. angiogenesis d. increased carbon dioxide, decreased pH (increased H+), and low O2arrow_forward
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