Parasympathetic stimulation of the __________ contractile cells shortens the __________ phase of the action potential by reducing the slow inward current carried by Ca2+
Fill in the blank(s) with correct word
atrial; plateau
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The diaphragm divides the ________.
A. abdominal and pelvic cavities. B. abdominopelvic and thoracic cavities C. thoracic cavity and mediastinum. D. pericardial and pleural cavities
Which of the following enzymes would be most active in the presence of a high concentrations of protein fragments?
A. amylase B. lipase C. trypsin D. dextrinase
An organic molecule such as a vitamin that makes an enzyme functional is called a/an ________.
A. catalyst B. coenzyme C. coactivator D. buffer
Mucosal associated lymphatic tissues (MALT) are:
A. aggregates of macrophages located in the intestines. B. clusters of splenocytes located in the lamina propria of mucous membranes. C. clumps of mucous lining the lumen of the gastrointestinal tract. D. aggregates of lymphatic tissue scattered throughout the lamina propria of mucous membranes.