Multiple Choice
In the context of calcium homeostasis, parathyroid hormone (PTH) is antagonistic to which hormone?
1
views
16. The Endocrine System
Introduction to the Endocrine System
Struggling with Anatomy & Physiology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which tissue is a primary target of parathyroid hormone (PTH)?
A
Bone tissue (osteoblasts/osteoclast regulation)
B
Pancreatic beta cells
C
Thyroid follicular cells
D
Adipose tissue
Verified step by step guidance1
Understand the role of parathyroid hormone (PTH): PTH is a hormone secreted by the parathyroid glands that primarily regulates calcium levels in the blood.
Identify the main target tissues of PTH: PTH acts mainly on bone tissue, kidneys, and intestines to increase blood calcium levels.
Focus on bone tissue: In bone, PTH influences osteoblasts and osteoclasts. Osteoblasts are bone-forming cells, while osteoclasts are bone-resorbing cells.
Explain the mechanism in bone: PTH stimulates osteoblasts to release signals that activate osteoclasts, which then break down bone matrix, releasing calcium into the bloodstream.
Compare with other options: Pancreatic beta cells produce insulin, thyroid follicular cells produce thyroid hormones, and adipose tissue stores fat; none of these are primary targets of PTH.
4:1mWatch next
Master Types of Chemical Messengers with a bite sized video explanation from Bruce Bryan
Start learningRelated Videos
Related Practice
Introduction to the Endocrine System practice set
Problem sets built by lead tutorsExpert video explanations