BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 48, Problem 3A
The difference between the amphibian and mammal hearts is that
a. in the amphibian heart, oxygenated and deoxygenated blood mix completely in the single ventricle.
b. in the amphibian heart, there are two SA nodes so that contractions occur simultaneously throughout the heart.
c. in the ventricle in the amphibian heart, internal channels reduce mixing of blood.
d. in the amphibian heart, only the left aorta pumps oxygen obtained by diffusion through the skin.
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The difference between the amphibian and mammal hearts is thata. in the amphibian heart, oxygenated and deoxygenated blood mix completely in the single ventricle.b. in the amphibian heart, there are two SA nodes so that contractions occur simultaneously throughout the heart.c. in the ventricle in the amphibian heart, internal channels reduce mixing of blood.d. in the amphibian heart, only the left aorta pumps oxygen obtained by diffusion through the skin
Which of the following statements about vertebrate circulatory systems is not true?
A.
In mammals, the blood pressure in the aorta is higher than the pressure in the pulmonary artery.
B.
In fishes, oxygenated blood from the gills returns directly to the heart through the left atrium.
C.
In birds, deoxygenated blood leaves the heart through the pulmonary artery.
D.
In reptiles, the blood in the pulmonary artery has a lower oxygen content than the blood in the aorta.
E.
In amphibians, deoxygenated blood enters the heart through the right atrium.
Which of the following statements is correct?
a. Arteries carry blood away from the heart and veins carry blood to the heart.
b. Arteries carry blood to the heart and veins carry blood away from the heart.
C. All arteries carry oxygen-rich blood and veins carry oxygen-poor blood.
d. Arteries carry oxygen-poor blood and veins carry oxygen-rich blood.
Chapter 48 Solutions
BIOLOGY
Ch. 48.1 - Prob. 1LOCh. 48.1 - Prob. 2LOCh. 48.2 - Prob. 1LOCh. 48.2 - Prob. 2LOCh. 48.2 - Prob. 3LOCh. 48.3 - Prob. 1LOCh. 48.3 - Prob. 2LOCh. 48.4 - Prob. 1LOCh. 48.4 - Prob. 2LOCh. 48.5 - Prob. 1LO
Ch. 48.5 - Prob. 2LOCh. 48.5 - Prob. 3LOCh. 48.5 - Prob. 4LOCh. 48 - Prob. 1DACh. 48 - Prob. 1IQCh. 48 - Prob. 2IQCh. 48 - An ECG measures a. changes in electrical potential...Ch. 48 - Systole is vitally important to heart function and...Ch. 48 - Which of the following is the correct sequence of...Ch. 48 - Which of the following statements is not true? a....Ch. 48 - Prob. 5UCh. 48 - Prob. 6UCh. 48 - When a sphygmomanometer is used, a. blood pulses...Ch. 48 - Prob. 8UCh. 48 - In vertebrate hearts, atria contract from the top,...Ch. 48 - Prob. 2ACh. 48 - The difference between the amphibian and mammal...Ch. 48 - Prob. 4ACh. 48 - Humans have a number of mechanisms that help to...Ch. 48 - Prob. 2SCh. 48 - Is the evolution of the four-chambered heart...Ch. 48 - Prob. 4S
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