Hematocrit is
A) a clotting factor.
B) a disease.
C) the color of plasma.
D) the percent of red blood cells in a blood sample.
D
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Which of the following statements regarding the determination of stimulus intensity is true?
A. The only means of detecting intensity changes is through recruitment of greater numbers of sensory units. B. The duration of receptor potentials decreases with increasing stimulus intensity. C. The frequency of action potentials increases with increasing stimulus intensity. D. Stronger intensity stimuli cause rapid adaptation, while weaker stimuli cause slower adaptation. E. The amplitude of action potentials increases with increasing stimulus intensity.
What would be the effect of a drug that blocked muscarinic receptors on the smooth muscle of the iris that regulates the size of the pupil?
A. The pupil would dilate. B. The pupil would constrict. C. The eye would focus more clearly on near objects. D. The eye would focus more clearly on distant objects. E. Blood vessels in the anterior part of the eye would constrict.
Identify the following
Which of the following bones does not form by endochondral ossification?
A. Calcaneus B. Ulna C. Clavicle D. Scapula E. Femur