The rotator cuff muscles
A. fix the scapula in place.
B. attach the arm to the thorax.
C. attach the clavicle to the humerus.
D. hold the head of the humerus in the glenoid fossa of the scapula.
E. attach at the distal end of the humerus.
D
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Extracellular fluid
a. constitutes a greater percentage of total body water than does intracellular fluid b. osmolarity must be regulated to prevent an acid-base imbalance because the hydrogen ions might become too concentrated or too dilute in the body fluids c. volume must be regulated to prevent the cells from swelling or shrinking d. has more than one of the above characteristics e. has none of the above characteristics
All of the following are components of mucus EXCEPT ________
A) water B) salts C) red blood cells D) white blood cells
Aldosterone secretion may be stimulated by ________.
A. elevated Na+ levels B. excess water intake C. ADH D. low K+ levels E. elevated K+ levels
What is the layer of the alimentary canal that propels food through the digestive tract called?
A. Lumen B. Mucosa C. Submucosa D. Muscularis externa E. Serosa