THYROID AND ADRENAL HORMONE HLSC 2410 EXAM
QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
list out the cascade of the Hypothalamic-Pituitary Thyroid Axis
-Hypothalamus release TRH
-Thyrotrophs on the anterior pituitary release thyroid stimulating hormones
-Thyroid glands have receptors for the TSH
Causing of the simulation of T3 and T4 (thyroid hormones)
Where is the thyroid gland located?
inferior to the larynx and anterior to the trachea
why do we inject radioactive iodine during neck scans?
Iodine is apart of the creation of the thyroid hormone, when injected it will be up-taken in
the thyroid
if the thyroid is hyperactive, it will illuminate it.
Thyroid gland function
produces hormones that regulate metabolism, growth, development and increased
catecholamine effect
relationship of iodine and tyrosine to the thyroid
iodine and tyrosine enter the thyroid gland causing the TSH receptors to bind with TSH
triggering the release of T3 and T4
, The thyroid gland is made up of ____
follicles
What is a colloid?
a protein-rich center where thyroid hormone is synthesized and stored.
because human diets do not contain alot of iodine therefore
colloid of the thyroid gland also stores iodine
follicular epithelial cells
surround the colloid and participate in almost all phases of thyroid hormone synthesis
and secretion
How do we get nutrients to and from the thyroids?
the thyroid gland is highly vascularized. blood vessels carry hormones and nutrients to
and from the thyroid gland
What is thyroglobulin?
protein enriched in the thyroid gland, source or tyrosine for thyroid hormone
Thyroglobulin
secreted by follicle cells; binds with iodine to produce T4 and T3,
acts as a scaffold for thyroid hormone synthesis
Which thyroid hormone is active?
T3
which thyroid hormone is inactive?
T4
T4 is a ____ for T3
prehormone
QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS
list out the cascade of the Hypothalamic-Pituitary Thyroid Axis
-Hypothalamus release TRH
-Thyrotrophs on the anterior pituitary release thyroid stimulating hormones
-Thyroid glands have receptors for the TSH
Causing of the simulation of T3 and T4 (thyroid hormones)
Where is the thyroid gland located?
inferior to the larynx and anterior to the trachea
why do we inject radioactive iodine during neck scans?
Iodine is apart of the creation of the thyroid hormone, when injected it will be up-taken in
the thyroid
if the thyroid is hyperactive, it will illuminate it.
Thyroid gland function
produces hormones that regulate metabolism, growth, development and increased
catecholamine effect
relationship of iodine and tyrosine to the thyroid
iodine and tyrosine enter the thyroid gland causing the TSH receptors to bind with TSH
triggering the release of T3 and T4
, The thyroid gland is made up of ____
follicles
What is a colloid?
a protein-rich center where thyroid hormone is synthesized and stored.
because human diets do not contain alot of iodine therefore
colloid of the thyroid gland also stores iodine
follicular epithelial cells
surround the colloid and participate in almost all phases of thyroid hormone synthesis
and secretion
How do we get nutrients to and from the thyroids?
the thyroid gland is highly vascularized. blood vessels carry hormones and nutrients to
and from the thyroid gland
What is thyroglobulin?
protein enriched in the thyroid gland, source or tyrosine for thyroid hormone
Thyroglobulin
secreted by follicle cells; binds with iodine to produce T4 and T3,
acts as a scaffold for thyroid hormone synthesis
Which thyroid hormone is active?
T3
which thyroid hormone is inactive?
T4
T4 is a ____ for T3
prehormone
