Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 48.1, Problem 1CC
Summary Introduction
To determine: The reason why it is incorrect to think the open circulatory system as primitive compared to the closed system.
Introduction: The process of circulation or internal transport is carried out by the pumping organ of the body which is known as the heart. The circulatory system helps in the process of oxygen transportation to various organs. It transports the nutrients through the blood and also acts as a carrier in the removal of unwanted products from the body.
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Why is closed circulatory system considered advantageous?
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?
Many invertebrates utilize the body cavity as a circulatory system. However, in humans, the body cavity plays no role whatsoever in circulation. Why?
Chapter 48 Solutions
Biology
Ch. 48.1 - Prob. 1CCCh. 48.1 - Prob. 1CSCh. 48.2 - Core Skill: Connections Leukocytes are part of the...Ch. 48.3 - Prob. 1CCCh. 48.3 - Prob. 2CCCh. 48.4 - Do erythrocytes enter and exit through pores in...Ch. 48.7 - Prob. 1CSCh. 48.7 - Prob. 1CCCh. 48.7 - Prob. 2CCCh. 48.8 - Prob. 1EQ
Ch. 48.8 - Prob. 2EQCh. 48.8 - Prob. 3EQCh. 48.9 - Prob. 1CCCh. 48.10 - Prob. 1CSCh. 48 - Prob. 1TYCh. 48 - Prob. 2TYCh. 48 - A major advantage of a double circulation is that...Ch. 48 - Prob. 4TYCh. 48 - For blood flow through a closed circulation, which...Ch. 48 - Prob. 6TYCh. 48 - The countercurrent exchange mechanism in fish...Ch. 48 - The tracheal system of insects a. consists of...Ch. 48 - Prob. 9TYCh. 48 - Prob. 10TYCh. 48 - Prob. 1CQCh. 48 - Prob. 2CQCh. 48 - Prob. 3CQCh. 48 - Prob. 1COQCh. 48 - List the components of the mammalian respiratory...
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- Why is a closed circulatory system more efficient than an open circulatory system?arrow_forwardThree circulatory systems of vertebrates are represented in the following diagram. Identify to which group of animals each circulatory system belongs and mention the reasons for considering them as such. ↑ Capilares de las branquias Aorta Capilares sanguíneos ↓ Capilares pulmonares Aorta Capilares sanguíneos ↓ Capilares pulmonares Aorta Capilares sanguineosarrow_forwardWhen comparing the circulatory systems of vertebrates, indicate whether the following statements are true or false. There is no mixing of oxygenated (high [O2]) and deoxygenated (low [O2]) blood in the ventricle of a fish. #apply Question 9 options: True False The circulatory system of amphibians is more efficient than that of fish because there are two circulatory loops. #analyze Question 10 options: True False The only vertebrates without a hepatic portal venous system connecting the gut to the liver are the fish. #analyze Question 11 options: True False There is no mixing of oxygenated (high [O2]) and deoxygenated (low [O2]) blood in the ventricle of a frog. #apply Question 12 options: True Falsearrow_forward
- note whether the statements below are consistent with an open or closed circulatory system. The circulating fluid flows in one direction (unidirectionally) through a circulatory loop. The circulating fluid is called hemolymph. Ostia are pores in the heart, important for circulatory function. The circulating fluid is called blood. The circulating fluid remains in vessels as it moves throughout the organism. Is the more efficient type of circulatory system.arrow_forwardWhy are the two separate circulatory systems said to be “serially connected”?arrow_forwardWhich sequence of blood flow can be observed in either a reptile or a mammal? right atrium → pulmonary artery → left atrium → ventricle left ventricle → aorta → lungs → systemic circulation right ventricle → pulmonary vein → pulmocutaneous circulation pulmonary vein → left atrium → ventricle → pulmonary circuit vena cava → right atrium → ventricle → pulmonary circuitarrow_forward
- Why don't protists (eg. sponges) need circulatory systems? Question 12 options: None of their cells are in contact with their externl environment so that waste can not diffuse out of their bodies. All of their cells are in contact with their external environment so that nutrients and oygen can diffuse into cells. This is a misleading question because all animals have circulatory systems. They are such simple animals that they don't need oxygen.arrow_forwardIn what 2 ways is an insect's circulatory system different from a vertebrate's circulatory system? (choose 2 answers) Question 14 options: The insect has closed circulatory system. Insects have a tracheal system that delivers oxygen to it's cells directly so it is not associated with the circulatory system. Insects have a tracheal system that delivers oxygen to it's circulatory system. The insect has an open circulatory system instead of one that is closed (as in vertebrates). This means that the circulatory fluid of vertebrates moves much faster than that of insects.arrow_forwardHow circulatory system helps in maintaining homeostasis?arrow_forward
- In what sense is a homocoel part of the circulatory system?arrow_forwardPlease define the term closed circulatory system. Which animals have it, and what are its’ evolutionary advantages over open systems (why might a closed system be more efficient)?arrow_forwardWhat is a characteristic of the circulatory systems of arthropods and mollusks that distinguishes them from the circulatory system of echinoderms? They have lungs. They have muscular pumps to circulate the extracellular fluid. They are closed circulatory systems. They have extracellular fluid to transport substances to and from internal organs. They have cilia to circulate the extracellular fluid.arrow_forward
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