The type of muscle that functions as a sphincter is
A. pennate.
B. straight.
C. orbicular.
D. rhombohedral.
E. unipennate.
C
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The structure responsible for attaching muscle to bone is a
A. sphincter. B. ligament. C. fascia. D. tendon. E. myofibril.
Each amino acid differs from others in the
A) chemical structure of the R group. B) size of the amino group. C) number of carboxyl groups. D) number of central carbon atoms. E) number of peptide bonds in the molecule.
Polyribosomes
a. a unusually large ribosomes. b. are found on smooth ER. c. synthesize lipids and nucleic acids. d. are clusters of ribosomes synthesizing the same protein. e. none of these answers.
Physiologic effects of CPAP include:
A) increased intrathoracic pressure. B) forcing of fluid into the alveoli. C) increased alveolar surface tension. D) opening of collapsed alveoli.