Chemicals that act as messengers are called
a. proteins.
b. hormones.
c. enzymes.
d. nerve impulses.
B
Hormones are secreted in one place in the body and have actions in another place in the body; therefore they are a type of chemical messenger. Some, but not all, hormones are proteins. En-zymes work locally on specific classes of nutrients to change them from one form to a simpler form. Nerve impulses send messages in the body, but via electrical impulses rather than via chemicals.
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A nursing student is caring for a client with leukemia. The student asks why the client is still at risk for infection when the client's white blood cell count (WBC) is high. What response by the registered nurse is best?
a. "If the WBCs are high, there already is an infection present." b. "The client is in a blast crisis and has too many WBCs." c. "There must be a mistake; the WBCs should be very low." d. "Those WBCs are abnormal and don't provide protection."
The nurse is performing an examination of the anus and rectum. Which of these statements is correct and important to remember during this examination?
a. The rectum is approximately 8 cm long. b. The anorectal junction cannot be palpated. c. Above the anal canal, the rectum turns anteriorly. d. No sensory nerves are in the anal canal or rectum.
The nurse shows an understanding of the primary factor that facilitates the adjustment to the loss of a spouse when asking
a. "Are you planning to continue to run your flower shop?" b. "How long were you and your spouse married?" c. "Does your son and his family live near-by?" d. "Do you consider yourself a religious person?"
The nurse administers albuterol to a patient who has asthma. The albuterol acts by stimulating beta2-adrenergic receptors to cause bronchodilation. The nurse understands that albuterol is a beta-adrenergic
a. agonist. b. antagonist. c. inhibitor. d. depressant.