In this closeup image of a lung, what structure does number 3 indicate?
A. Alveolar duct
B. Respiratory bronchiole
C. Alveolus
D. Terminal bronchiole
E. Bronchiole
Answer: A
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________ carry motor information to peripheral effectors
A) Unipolar neurons B) Efferent neurons C) Multipolar neurons D) Afferent neurons E) Interneurons
Which of the following is not a function of the respiratory system?
A. It allows exchange of oxygen and carbon dioxide between blood and air. B. It contributes to maintenance of pH balance. C. It helps to expel abdominal contents during defecation and childbirth. D. It helps to transport gases to tissues. E. It permits vocalizations.
A muscle whose contraction is mostly responsible for a movement is said to be the ________ for that movement.
A) anergist B) prime mover C) agonist D) antagonist E) both agonist and prime mover
Action potentials pass from one cardiac muscle cell to another through areas of low electrical resistance called
A. sarcolemma sclerotic plaques. B. gap junctions. C. tight junctions. D. electromagnetic discs. E. fibrous heart rings.