What hormone is sometimes given to patients with osteoporosis because of its inhibition of osteoclast activity?
Calcitonin
Identify the step in thyroid hormone synthesis indicated by "G.
Lysosomal enzymes cleave T4 and T3 from thyroglobulin colloid and hormones diffuse into bloodstream.
What is the function of thyroid hormone?
Increases the metabolic rate
Select the statement that is not a function of thyroid hormone.
Raises blood Ca2+ levels
What hormone would help to restore the homeostatic imbalance resulting from decreased levels of Ca2+ in the blood?
Parathyroid hormone
Identify the step in thyroid hormone synthesis indicated by "C.
Iodide is oxidized to iodine.
Identify the step in thyroid hormone synthesis indicated by "F.
Thyroglobulin colloid is endocytosed and combined with a lysosome.
A condition that has symptoms including low metabolic rate; constipation; thick, dry skin; lethargy; and mental sluggishness can be caused by __________.
hyposecretion of the thyroid
The metabolic rate of most body tissues is controlled directly by __________.
TH
Which of the following conditions, if left untreated, progresses to respiratory paralysis and death?
Hypoparathyroidism
Identify the step in thyroid hormone synthesis indicated by "A.
Thyroglobulin is synthesized and discharged into the follicle lumen.
Identify the step in thyroid hormone synthesis indicated by "E.
Iodinated tyrosines are linked together to form T4 and T3.
Identify the site of production for thyroxine.
Thyroid gland
Iodine is attached to tyrosine amino acids in colloid, initially forming what two products?
MIT and DIT
Parathyroid hormone is secreted in response to ___________.
altered levels of a critical ion
Select the statement that is not a function of thyroid hormone.
Raises blood Ca2+ levels
What is the function of calcitriol?
Increases absorption of Ca2+ by intestinal mucosal cells
Identify the step in thyroid hormone synthesis indicated by "D.
Iodine is attached to tyrosine in colloid, forming DIT and MIT.
Identify the step in thyroid hormone synthesis indicated by "B.
Iodide is trapped (actively transported in).
What is the function of parathyroid hormone?
Raises blood Ca2+ levels