Core body temperature is the temperature of the blood circulating through the
a. heart and major arteries of the trunk. c. hypothalamus.
b. abdominal organs. d. mucous membranes.
C
Cellular metabolism requires a stable core, or "deep body," temperature of a mean of 37.2°C (99° F). Core body temperature is established by the temperature of blood flow through the carotid arteries to the hypothalamus (the body's temperature control center), which triggers the body's physiological response to temperature. The body maintains a steady temperature through a thermostat, or feedback mechanism, regulated by the hypothalamus. The thermostat balances heat production (from metabolism, exercise, food digestion, external factors) with heat loss (through radiation, evaporation of sweat, convection, conduction). An ideal thermometer would accurately measure central brain-stem temperature at the hypothalamus. Invasive procedures that provide temperatures of the arterial blood, esophagus, or bladder are reliable indicators of core temperature, but are impractical.
You might also like to view...
The nurse notices that a patient has ulcerations on the tips of the toes and on the lateral aspect of the ankles. This finding indicates:
a. Lymphedema. b. Raynaud disease. c. Arterial insufficiency. d. Venous insufficiency.
When assessing a community by using the structural-functional framework, the nurse recognizes that all communities must
a. Address financial needs of residents. b. Engage in functions that can be measured. c. Provide for socialization and a sense of identity. d. Require that public safety structures be built.
Evidence-based public health
1. Is an integration of the best available nursing expertise. 2. Is derived from community principles to fit the area where it is practiced. 3. Is a health endeavor that makes informed use of evidence. 4. Includes only one source: public health records.
The nurse is reviewing a patient's abdominal CT scan and notes that the patient has a berry shaped segment coming off of his abdominal aorta. What is the nurse's best interpretation of these results?
a. Dissecting aneurysm b. Saccular aneurysm c. Fusiform aneurysm d. False aneurysm