Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 20, Problem 9RQ
A healthy elastic artery ________.
- is compliant
- reduces blood flow
- is a resistance artery
- has a thin wall and irregular lumen
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You might often hear the term varicose veins but not varicose arteries. Explain in simple language why there are no varicose arteries.
Part A- Why do arteries have many more elastic fibers than veins?
They have less pressure during ventricular systole
O They need to be round in histological cross-section
O They need to be able to withstand the pressure that arises as blood is pumped from the heart
O All of the above
O None of the above
The lumen of a vein is larger
than the lumen of an artery of
the same size. True or False
Chapter 20 Solutions
Anatomy & Physiology
Ch. 20 - Watch this video...Ch. 20 - Listen to this CDC podcast...Ch. 20 - The endothelium is found in the ________. tunica...Ch. 20 - Nervi vasorum control ________. vasoconstriction...Ch. 20 - Closer to the heart, arteries would be expected to...Ch. 20 - Which of the following best describes veins? thick...Ch. 20 - An especially leaky type of capillary found in the...Ch. 20 - In a blood pressure measurement of 110/70, the...Ch. 20 - A healthy elastic artery ________. is compliant...Ch. 20 - Which of the following statements is true? The...
Ch. 20 - Slight vasodilation in an arteriole prompts a...Ch. 20 - Venoconstriction increases which of the following?...Ch. 20 - Hydrostatic pressure is ________. greater than...Ch. 20 - Net filtration pressure is calculated by ________....Ch. 20 - Which of the following statements is true? In one...Ch. 20 - Clusters of neurons in the medulla oblongata that...Ch. 20 - In the renin-angiotensin-aldosterone mechanism,...Ch. 20 - In the myogenic response, ________. muscle...Ch. 20 - A form of circulatory shock common in young...Ch. 20 - The coronary arteries branch off of the ________....Ch. 20 - Which of the following statements is true? The...Ch. 20 - Arteries serving the stomach, pancreas, and liver...Ch. 20 - The right and left brachiocephalic veins ________....Ch. 20 - The hepatic portal system delivers blood from the...Ch. 20 - Blood islands are ________. clusters of...Ch. 20 - Which of the following statements is true? Two...Ch. 20 - The ductus venosus is a shunt that allows...Ch. 20 - Arterioles are often referred to as resistance...Ch. 20 - Cocaine use causes vasoconstriction. Is this...Ch. 20 - A blood vessel with a few smooth muscle fibers and...Ch. 20 - You measure a patients blood pressure at 130/85....Ch. 20 - An obese patient comes to the clinic complaining...Ch. 20 - A patient arrives at the emergency department with...Ch. 20 - True or false? The plasma proteins suspended in...Ch. 20 - A patient arrives in the emergency department with...Ch. 20 - Nitric oxide is broken down very quickly after its...Ch. 20 - Identify the ventricle of the heart that pumps...Ch. 20 - What organs do the gonadal veins drain?Ch. 20 - What arteries play the leading roles in supplying...Ch. 20 - All tissues, including malignant tumors, need a...Ch. 20 - Explain the location and importance of the ductus...
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- The wall of the aorta is _______ (thicker/thinner) than the wall of the superior vena cava.arrow_forwardWalls of veins are thicker than the walls of arteries of the same size. True or Falsearrow_forwardWhen the lumen of an artery fills with plaque and calcium salts reducing blood flow, this condition is called ___. atherosclerosis arteriosclerosis mycosis myosisarrow_forward
- When the nature of an artery changes from elastic to rigid because of changes in the walls, not the lumen, of the artery, this condition is called ___. aneurysm arteriosclerosis varices atherocsclerosisarrow_forwardWhen the layers of an artery become rigid and no longer can stretch, the condition is called ___. pericardial tamponade arteriosclerosis atherosclerosis hematemesisarrow_forwardreason why open system has a limitation of collecting only 10 mL of blood? do this typewritten only for upvote no upvote for handwritten skip if you already did this otherwise downvotearrow_forward
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