10 Oxygen attaches to _________ ions in the hemoglobin of erythrocytes. Group of answer choices A calcium B magnesium C sodium D iron   11 During fetal breathing, surfactant begins to be produced about two months before birth. The function of surfactant is ____________________. A to stimulate muscle contractions which lead to inhalation and exhalation B to prevent the lungs from collapsing C to stimulate the growth of the alveoli D to develop the bronchial tree and respiratory parenchyma 12 The following statements about the lymph system are correct, EXCEPT: A The lymph system is a closed system like the cardiovascular system. B Lymph vessels are located in all areas of the body except the bone marrow, the central nervous system, and the epidermis of the skin. C The lymph system relies on the contraction of skeletal muscles to circulate lymph throughout the body. D Lymph vessels are lined with valves that allow fluid to enter the capillaries, but do not let fluid escape.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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10 Oxygen attaches to _________ ions in the hemoglobin of erythrocytes.
Group of answer choices
A calcium
B magnesium
C sodium
D iron
 
11
During fetal breathing, surfactant begins to be produced about two months before birth. The function of surfactant is ____________________.

A to stimulate muscle contractions which lead to inhalation and exhalation
B to prevent the lungs from collapsing
C to stimulate the growth of the alveoli
D to develop the bronchial tree and respiratory parenchyma
12 The following statements about the lymph system are correct, EXCEPT:

A The lymph system is a closed system like the cardiovascular system.
B Lymph vessels are located in all areas of the body except the bone marrow, the central nervous system, and the epidermis of the skin.
C The lymph system relies on the contraction of skeletal muscles to circulate lymph throughout the body.
D Lymph vessels are lined with valves that allow fluid to enter the capillaries, but do not let fluid escape.
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