By definition, an organ is composed of two or more ________ types.
A. organelle
B. cell
C. tissue
D. molecule
E. organ system
Answer: C
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The building of complex molecules from simpler ones is described as
A. reversible. B. exergonic. C. anabolism. D. catabolism. E. irreversible.
Why does hair turn white or gray with age?
A) The hair is no longer producing carotene. B) The keratinocytes have been damaged. C) Sebaceous gland activity increases, making the hair well lubricated during growth and turning it white or gray. D) The epidermis is dividing faster, making the hair white or gray. E) The melanocyte activity declines, making the hair white or gray.
Which of the following is true regarding the levator scapulae?
A. It elevates the scapula if the scapula is fixed. B. It protracts the scapula if the humerus is fixed. C. It is innervated by the phrenic nerve. D. It flexes the neck if the scapula is fixed. E. It rotates the scapula and depresses the apex of the shoulder.
The sacrotuberous ligament:
A) passes through the greater sciatic notch. B) attaches to the ala of the sacrum. C) resists posterosuperior rotation of the sacrum (inferior aspect moving posteriorly and superiorly). D) passes through the obturator foramen. E) prevents posterior dislocation of the femoral head.