Why is the trachea composed of flexibly linked cartilage rings? (
What will be an ideal response?
Flexibility needed to move upper extremity; firmness needed to avoid collapse
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Which of the following describes muscular tissue emerging directly from bone rather than being separated from it by an obvious tendon?
A. Direct attachment B. Indirect attachment C. Inverted attachment D. Insertion E. Origin
The glomerular filtrate
a. is a protein-free plasma. b. is formed as a result of passive forces acting across the glomerular membrane. c. does not contain foreign compounds because these substances are secreted by special transport mechanisms in the proximal tubule instead. d. both (a) and (b) above. e. all of these answers.
The greatest percentage of Na+ reabsorption takes place in the
a. proximal tubule. b. loop of Henle. c. distal tubule. d. collecting tubule. e. renal pelvis.
Identify the crural region
