Track the path of maturation of the T lymphocyte
What will be an ideal response?
Answer: Precursor T cells leave the bone marrow (where they develop from the committed lymphoid progenitor cell) and enter the thymus through arterioles in the cortex. The thymus is the maturation compartment for T-lymphocytes. As they travel through the cortex and medulla, the T-lymphocytes interact with epithelial cells and dendritic cells, which provide signals to ensure that T cells recognize foreign antigen, not self-antigen. In addition, the T cells undergo substantial proliferation.
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Scheduling by ________ involves scheduling patients who require similar procedures and examinations during a particular block of time.
A. specified time B. modified wave C. grouping procedures D. open hours system
Toxic nerve agents:
a. overstimulate the nerve endings and the central nervous system. b. block stimulation of sensory nerve endings only. c. decrease production of chemical transmitters. d. block stimulation of both sensory and motor nerve endings.
You are on the scene of a 44-year-old female patient who has attempted suicide by taking all 30 pills of her antidepressant medication at once. You are ordered by medical control to administer activated charcoal. How will activated charcoal reduce the effects of the medication?
A) Activated charcoal will inactivate the patient's stomach acid. B) Activated charcoal will cause the patient to vomit the medication. C) Activated charcoal will coat the intestines, preventing absorption. D) Activated charcoal will bind to the medication, reducing absorption.
The Henderson-Hasselbalch equation is used in acid-base analysis to relate which of the follow-ing?
a. pH to PCO2 c. Carbonic acid (H2CO3) to HCO3– b. pH to bicarbonate (HCO3–) d. PO2 to oxygen sat-uration