The production of thyroid hormone is stimulated by another hormone from the:
anterior pituitary.
posterior pituitary.
thyroid gland.
parathyroid gland.
The Correct Answer is A
A. anterior pituitary: The anterior pituitary gland secretes Thyroid-Stimulating Hormone (TSH), which tells the thyroid gland to produce T3 and T4.
B. posterior pituitary: The posterior pituitary stores and releases oxytocin and ADH; it does not produce TSH.
C. thyroid gland: The thyroid produces the hormone, but it does not provide the primary upstream stimulus for its own production.
D. parathyroid gland: These glands regulate calcium levels via Parathyroid Hormone (PTH), not thyroid hormone production.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. stroke volume and blood pressure: Blood pressure is a result of cardiac output, not a direct component used to calculate it.
B. heart rate and blood pressure: Blood pressure is a separate hemodynamic variable and not a multiplier for output.
C. stroke volume and heart rate: Cardiac Output (CO) is defined by the formula CO = HR × SV. It is the volume of blood pumped per minute.
D. stroke volume and peripheral resistance: Peripheral resistance determines blood pressure (Resistance × Output), but it does not determine the volume of blood leaving the heart.
Correct Answer is D
Explanation
A. Causes the pancreas to increase exocrine secretions high in enzyme content: CCK stimulates pancreatic acinar cells to release digestive enzymes.
B. Opposes the influence of gastrin on gastric parietal cells: CCK helps inhibit gastric emptying and acid secretion to allow the small intestine time to process fats.
C. Stimulates the contraction of the gallbladder: This is the most well-known function, which pushes bile into the duodenum to emulsify fats.
D. Does all of the above: All three statements accurately describe the multi-faceted role of CCK in digestion.
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