In the spinal cord, the gray matter is arranged into ______ and the white matter is arranged into _____
Fill in the blank(s) with the appropriate word(s).
Horns ; funiculi
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Capillary exchange involving movement through the cells is called ________ transport.
Fill in the blank(s) with the appropriate word(s).
Lungs are to the respiratory system as the spleen is to the
A) lymphatic system.
B) urinary system.
C) digestive system.
D) cardiovascular system.
E) muscular system.
The large, dome-shaped muscle called the diaphragm is used for ________.
A. circulation B. digestion C. reproduction D. breathing
The lungs remain inflated because
A. intrapleural pressure is exactly equal to atmospheric pressure. B. intrapleural pressure is exactly equal to intrapulmonary pressure. C. intrapleural pressure is less than intrapulmonary pressure. D. intrapulmonary pressure is less than intrapleural pressure.