The basic event in the formation of a blood clot is the change of
A. fibrinogen to fibrin.
B. thrombin to prothrombin.
C. vitamin K to prothrombin.
D. fibrin to fibrinogen.
Answer: A
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The ________ receptor type is used by the heart, and when activated increases heart rate.
Fill in the blank(s) with the appropriate word(s).
Which statement is correct?
a. During hypotonicity, water enters the cells by osmosis. b. The only cause of hypotonicity is drinking excess fluid. c. Hypotonicity is a major consequence of diabetes mellitus, which is a deficiency of vasopressin. d. Hypotonicity is usually associated with a negative water balance. e. Common symptoms of hypotonicity include dry skin and sunken eyeballs.
The adult human trachea is about ________ in diameter and contains ________ tracheal cartilages
A) 1.0 cm; 15-20 B) 1.0 cm; 10-15 C) 2.5 cm; 15-20 D) 2.5 cm; 40-50 E) None of the answers is correct.
This figure shows the muscles of the posterior trunk. What muscle does number 1 indicate?
A. Latissimus dorsi B. Trapezius C. Rhomboid major D. Supraspinatus E. Infraspinatus