The “vital centers” (the cardiac, respiratory, and vasomotor centers) are located in the:
a. pons
b. midbrain
c. thalamus
d. medulla oblongata
d. medulla oblongata
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Which is a function of the tissue shown in diagram A?a) heat production b) pumping of blood c) propulsion of food d) contraction of bladder e) conduct nerve impulses to muscle fibers Answer: a
a) heat production b) pumping of blood c) propulsion of food d) contraction of bladder e) conduct nerve impulses to muscle fibers
In symphysis joints the articular surfaces of the bones are covered with ________.
A) hyaline cartilage B) synovial membranes C) fibrocartilage D) tendon sheaths
Which of the following does not occur during expiration when a person is breathing quietly?
a. The size of the thoracic cavity is reduced. b. The intra-alveolar pressure becomes greater than atmospheric pressure. c. Air flows out of the lungs. d. The expiratory muscles contract. e. Intrapleural pressure remains less than intra-alveolar pressure.
Which of the following is not attributable to complement activity?
a. acting as opsonins. b. walling-off the inflamed area. c. serving as chemotaxins. d. stimulating the release of histamine. e. forming a membrane attack complex.