Please help with 1 and 2? 1.) As thyroxin is released from the thyroid gland, it accumulates, inhibits the anterior pituitary gland and reduces the production of TSH by negative feedbackIodine is an ingredient in the production of thyroxin. Lack of dietary iodine results in an enlarged thyroid gland known as a goitre. Which of the following BEST explains how a lack of iodine causes the thyroid to enlarge and become a goitre? A. High levels of thyroxin over stimulate the thyroid gland . B. High levels of TSH over stimulate the thyroid gland. C. An enlarged thyroid compensates for the lack of iodine . D. An enlarged thyroid increases the production of TSH. 2.) As thyroxin is released from the thyroid gland, it accumulates, inhibits the anterior pituitary gland and reduces the production of TSH by negative feedback. Iodine is an ingredient in the production of thyroxinLack of dietary iodinegland known as a goitre. Some goitres occur even thoughdiet. Which of the following is the most likely explanation of a goitre in someone who consumes enough dietary iodine? A. The anterior pituitary gland produces too little TSH. B. The anterior pituitary gland absorbs too much iodine . C. An abnormal thyroid gland produces too much thyroxin . D. An abnormal thyroid gland produces too little thyroxin .

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Please help with 1 and 2? 1.) As thyroxin is released from the thyroid gland, it accumulates, inhibits the anterior pituitary gland and reduces the production of TSH by negative feedbackIodine is an ingredient in the production of thyroxin. Lack of dietary iodine results in an enlarged thyroid gland known as a goitre. Which of the following BEST explains how a lack of iodine causes the thyroid to enlarge and become a goitre? A. High levels of thyroxin over stimulate the thyroid gland . B. High levels of TSH over stimulate the thyroid gland. C. An enlarged thyroid compensates for the lack of iodine . D. An enlarged thyroid increases the production of TSH. 2.) As thyroxin is released from the thyroid gland, it accumulates, inhibits the anterior pituitary gland and reduces the production of TSH by negative feedback. Iodine is an ingredient in the production of thyroxinLack of dietary iodinegland known as a goitre. Some goitres occur even thoughdiet. Which of the following is the most likely explanation of a goitre in someone who consumes enough dietary iodine? A. The anterior pituitary gland produces too little TSH. B. The anterior pituitary gland absorbs too much iodine . C. An abnormal thyroid gland produces too much thyroxin . D. An abnormal thyroid gland produces too little thyroxin .

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