ENDOCRINE SYSTEM - Thyroid & Parathyroid Glands Flashcards
1
Q
What does thyroxine (T₄) do?
A
Increases metabolism, body temp, and protein synthesis.
2
Q
What stimulates thyroxine production?
A
Cold, low metabolism, high altitude, pregnancy.
3
Q
What does calcitonin do?
A
Lowers blood Ca²⁺ by inhibiting osteoclasts and stimulating osteoblasts.
4
Q
What does parathyroid hormone (PTH) do?
A
Increases blood Ca²⁺ by stimulating bone breakdown & kidney/GI absorption.
