Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 49.1, Problem 4R
Summary Introduction
To review:
The role of the closed circulatory system in the fight-or-flight response.
Introduction:
The circulatory system refers to the organ system, which is involved mainly in the transportation of the nutrients, gases, wastes, and other important materials in and out of the cell, tissues, and organs. The circulatory system includes heart, blood, and the blood vessels that are collectively referred to as the cardiovascular system. It can be of two types: open system and closed system. The closed type of circulatory system is mainly present in the higher animals such as chordates.
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What is the function of the circulatory system in the human body?
Which of the following is false about open circulatory systems?
Question 5 options:
a)
Movement of blood in an open circulatory system is relatively fast.
b)
Blood is in direct contact with all organs.
c)
Snails have an open circulatory system.
d)
There may be some blood vessels in organisms with open circulatory systems, but these tubes will not be closed on either end.
What are the two types ofcirculatory systems?
Chapter 49 Solutions
Life: The Science of Biology
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- How do essential nutrients and waste materials move through the Circulatory System?arrow_forwardWhat is the function of the circulatory system in the human body, and how does it work to maintain homeostasis?arrow_forwardWhy are the two separate circulatory systems said to be “serially connected”?arrow_forward
- How does an open circulatory system differ from a closed one? A)A closed circulatory system is completely encased in the body cavity whereas the open one is not. B)The open circulatory system has a combination of blood vessels and large thin-walled sinuses whereas a closed circulatory system has only vessels. C)An open circulatory system opens into the heart whereas the closed circulatory system does not. D)An open circulatory system drains into the mantle cavity whereas a closed circulatory system drains into the hemolymph. E)An open circulatory system opens into arteries and is drained by veins whereas in a closed one it is just the reverse.arrow_forwardHow circulatory system helps in maintaining homeostasis?arrow_forwardWhat is the role of the cardiovascular center in the feedback loop when blood volume and blood pressure fall? A) Control Center B) Effector C) Variable D) Receptorarrow_forward
- Two distinctly different styles of circulatory systems have evolved among animals: open and closed. What is “open” about an open cir-culatory system? Closed systems sometimes are cited as adaptive for actively moving animals with (at least at times) high metabolic de-mand. Can you suggest possible reasons for this assertion?arrow_forwardWhat does the circled structure do? A) signal ventricular contraction B) serve as the hearts pacemaker C) signal SA node contraction D) ensure blood doesn’t flow backwards through the heartarrow_forwardHow is the flow of hemolymph through an opencirculatory system similar to the flow of waterthrough an outdoor fountain?arrow_forward
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The Cardiovascular System: An Overview; Author: Strong Medicine;https://www.youtube.com/watch?v=Wu18mpI_62s;License: Standard youtube license