What part of the body does the sternocleidomastoid move?
a. head and neck
b. upper extremities
c. trunk of the body
d. lower extremities
a. head and neck
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Which carries oxygenated blood from the lungs to the heart?
A. Pulmonary arteries B. Pulmonary veins C. Pulmonary trunk D. Inferior vena cava E. Superior vena cava
The costs of locomotion for animals moving at their optimal velocities are
A) Lowest for swimmers. B) Highest for fliers. C) Lowest for runners. D) Highest for swimmers.
Fine hair called ________, which is unpigmented or lightly pigmented, is the primary human hair and is found on the upper and lower limbs.
A. terminal B. vellus C. cuticle D. lanugo E. phalanx
Which of the following is true?
A. Motor units do not obey the "all or none" law. B. A threshold stimulus will not affect motor units. C. Muscle fatigue has no influence on the force of contractions. D. A subthreshold stimulus causes a muscle contraction. E. A threshold stimulus will cause contraction of a muscle fiber.