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Questions and Answers
What is the primary function of peroxidase enzymes in the synthesis of thyroid hormones?
What is the primary function of peroxidase enzymes in the synthesis of thyroid hormones?
- To produce thyroxine-binding globulins
- To regulate the release of thyroid hormones into the bloodstream
- To cleave T3 and T4 from thyroglobulin
- To mediate the attachment of iodine to tyrosine (correct)
What is the result of inadequate iodine intake on the thyroid gland?
What is the result of inadequate iodine intake on the thyroid gland?
- The thyroid gland atrophies
- The thyroid gland enlarges and protrudes (correct)
- The thyroid gland produces excessive amounts of T3 and T4
- The thyroid gland stops producing thyroid hormones
What is the primary cause of cretinism or congenital hypothyroidism?
What is the primary cause of cretinism or congenital hypothyroidism?
- Hyperthyroidism during infancy
- Thyroid gland atrophy
- Genetic deficiency or maternal factors (correct)
- Iodine deficiency during pregnancy
What is the primary symptom of exophthalmos in Grave's disease?
What is the primary symptom of exophthalmos in Grave's disease?
What is the primary mechanism of negative feedback in regulating thyroid hormone levels?
What is the primary mechanism of negative feedback in regulating thyroid hormone levels?
What is the primary treatment for myxedema?
What is the primary treatment for myxedema?
What is the primary cause of hyperthyroidism in Grave's disease?
What is the primary cause of hyperthyroidism in Grave's disease?
What is the primary function of thyroxine-binding globulins (TBGs)?
What is the primary function of thyroxine-binding globulins (TBGs)?
What is the primary role of testosterone in the male reproductive system?
What is the primary role of testosterone in the male reproductive system?
Which hormone produced by the heart reduces blood pressure, blood volume, and blood sodium concentration?
Which hormone produced by the heart reduces blood pressure, blood volume, and blood sodium concentration?
What is the primary function of enteroendocrine cells in the gastrointestinal tract?
What is the primary function of enteroendocrine cells in the gastrointestinal tract?
Which structure produces human chorionic gonadotropin (hCG) during pregnancy?
Which structure produces human chorionic gonadotropin (hCG) during pregnancy?
What is the primary role of leptin in the body?
What is the primary role of leptin in the body?
Which hormone-producing glands arise from the mesoderm?
Which hormone-producing glands arise from the mesoderm?
What is the primary function of cholecalciferol in the body?
What is the primary function of cholecalciferol in the body?
Which hormone-producing structure is responsible for the development of secondary sexual characteristics in females?
Which hormone-producing structure is responsible for the development of secondary sexual characteristics in females?
Which part of the adrenal gland secretes epinephrine in response to sympathetic stimulation?
Which part of the adrenal gland secretes epinephrine in response to sympathetic stimulation?
What is necessary for the synthesis of aldosterone?
What is necessary for the synthesis of aldosterone?
What hormone does the middle layer of the adrenal cortex secrete?
What hormone does the middle layer of the adrenal cortex secrete?
Which hormones are secreted by the adrenal medulla?
Which hormones are secreted by the adrenal medulla?
From what are corticosteroids synthesized?
From what are corticosteroids synthesized?
Which part of the adrenal gland is related to the sympathetic nervous system?
Which part of the adrenal gland is related to the sympathetic nervous system?
What does the deep layer of the adrenal cortex secrete?
What does the deep layer of the adrenal cortex secrete?
What can be a result of a parathyroid gland tumor?
What can be a result of a parathyroid gland tumor?
Which symptom is not typically associated with hypersecretion of the sympathetic nervous system?
Which symptom is not typically associated with hypersecretion of the sympathetic nervous system?
Which statement best describes the function of glucagon secreted by the pancreas?
Which statement best describes the function of glucagon secreted by the pancreas?
What is the primary function of melatonin in the human body?
What is the primary function of melatonin in the human body?
Which cells in the pancreatic islets are responsible for insulin secretion?
Which cells in the pancreatic islets are responsible for insulin secretion?
Which of the following describes the pineal gland's location?
Which of the following describes the pineal gland's location?
Which function is directly influenced by melatonin?
Which function is directly influenced by melatonin?
What is the primary role of the acinar cells in the pancreas?
What is the primary role of the acinar cells in the pancreas?
Which process is NOT stimulated by the hormone glucagon?
Which process is NOT stimulated by the hormone glucagon?
What is one of the primary actions of calcitonin on the skeleton?
What is one of the primary actions of calcitonin on the skeleton?
Which cells are responsible for the synthesis and secretion of calcitonin?
Which cells are responsible for the synthesis and secretion of calcitonin?
How does PTH increase calcium levels in the blood?
How does PTH increase calcium levels in the blood?
Which statement describes the primary regulation mechanism for calcitonin secretion?
Which statement describes the primary regulation mechanism for calcitonin secretion?
What are the symptoms associated with hypoparathyroidism?
What are the symptoms associated with hypoparathyroidism?
Which gland is responsible for the secretion of PTH?
Which gland is responsible for the secretion of PTH?
What is a common effect of hyperparathyroidism?
What is a common effect of hyperparathyroidism?
Which of the following actions does PTH not perform?
Which of the following actions does PTH not perform?
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