The nurse is caring for a client with thyroid dysfunction. Which statement about the normal function of the thyroid does the nurse know to be true?
A) Thyroid releasing hormone and thyroid stimulating hormone are released by the thyroid.
B) The functional unit of the thyroid is the thyroid follicle.
C) Hormone secretion of the thyroid is regulated through positive feedback mechanisms.
D) Thyroid function is regulated by the hypothalamus and amygdala.
B) The functional unit of the thyroid is the thyroid follicle.
Explanation: A) The functional unit of the thyroid is the thyroid follicle. The two primary hormones released by the thyroid are triiodothyronine (T3) and thyroxine (T4). Thyroid releasing hormone (TRH) is hypothalamus and thyroid stimulating hormone (TSH) is released by the pituitary, not the thyroid. Hormone secretion of the thyroid is regulated through negative feedback mechanisms, not positive feedback mechanisms. Thyroid function is regulated by the hypothalamic-anterior pituitary-thyroid gland axis, not the hypothalamus and amygdala.
B) The functional unit of the thyroid is the thyroid follicle. The two primary hormones released by the thyroid are triiodothyronine (T3) and thyroxine (T4). Thyroid releasing hormone (TRH) is hypothalamus and thyroid stimulating hormone (TSH) is released by the pituitary, not the thyroid. Hormone secretion of the thyroid is regulated through negative feedback mechanisms, not positive feedback mechanisms. Thyroid function is regulated by the hypothalamic-anterior pituitary-thyroid gland axis, not the hypothalamus and amygdala.
C) The functional unit of the thyroid is the thyroid follicle. The two primary hormones released by the thyroid are triiodothyronine (T3) and thyroxine (T4). Thyroid releasing hormone (TRH) is hypothalamus and thyroid stimulating hormone (TSH) is released by the pituitary, not the thyroid. Hormone secretion of the thyroid is regulated through negative feedback mechanisms, not positive feedback mechanisms. Thyroid function is regulated by the hypothalamic-anterior pituitary-thyroid gland axis, not the hypothalamus and amygdala.
D) The functional unit of the thyroid is the thyroid follicle. The two primary hormones released by the thyroid are triiodothyronine (T3) and thyroxine (T4). Thyroid releasing hormone (TRH) is hypothalamus and thyroid stimulating hormone (TSH) is released by the pituitary, not the thyroid. Hormone secretion of the thyroid is regulated through negative feedback mechanisms, not positive feedback mechanisms. Thyroid function is regulated by the hypothalamic-anterior pituitary-thyroid gland axis, not the hypothalamus and amygdala.
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