The heart is surrounded by the ________ membrane.
A) pericardial
B) peritoneal
C) visceral
D) serous
E) pleural
A) pericardial
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Which of the following types of electrical signals allow rapid long-distance communication within the nervous system?
a) resting potential b) nerve action potential c) muscle action potential d) graded potential e) long-term potentiation
The __________ femoris has two heads and is an antagonist of the rectus femoris.
Fill in the blank(s) with the appropriate word(s).
A conscious but combative patient with severe facial trauma is fully immobilized on a backboard. During your assessment, the patient begins coughing up large amounts of blood. You suction his oropharynx, but his mouth quickly refills with blood. You should:
A) preoxygenate the patient with a bag-mask for 2 minutes and then perform nasotracheal intubation. B) roll the backboard on its side, suction his oropharynx, and prepare to perform pharmacologically assisted intubation. C) alternate suctioning of his oropharynx for 15 seconds and assisting ventilations for 2 minutes until his airway is clear of blood. D) continually suction his oropharynx until it is clear of blood, apply oxygen via nonrebreathing mask, and administer a sedative drug.
Karen just ate a piece of birthday cake. Which statement is true about Karen's hormone levels after her snack?
A. Karen's pancreas releases insulin to lower blood glucose levels. B. Karen's pancreas releases insulin to raise blood glucose levels. C. Karen's pancreas releases glucagon to raise blood glucose levels. D. Karen's pancreas releases glucagon to lower blood glucose levels.