What are 3 target organs of the parathyroid hormone?
What are 3 target organs of the parathyroid hormone?
The main target organs where parathyroid hormone exerts its effects are the bones and the kidneys.
What target organs does PTH effect?
The major target end organs for parathyroid hormone (PTH) action are the kidneys, skeletal system, and intestine. The primary response to parathyroid hormone (PTH) by the kidney is to increase renal calcium resorption and phosphate excretion.
Which is the target tissue for the parathyroid hormone quizlet?
The target tissue of the parathyroid hormone is the intestines. Growth hormone acts on all body cells. The mammary gland is the target tissue of oxytocin.
What are the primary target tissues for PTH parathyroid hormone calcitonin and calcitriol?
Parafollicular cells of the thyroid gland secrete calcitonin; chief (principal) cells of the parathyroid gland secrete PTH. What are the primary target tissues for PTH, CT, and calcitriol? Target tissues for PTH are bones and the kidneys; target tissue for CT is bone; target tissue for calcitriol is the GI tract.
How does hyperparathyroidism affect the kidneys?
Hyperparathyroidism (HPT) is a condition that causes one or more parathyroid glands to produce an excess amount of parathyroid hormone (PTH). This disrupts the blood calcium level in the body and can lead to kidney failure.
What is the target organ of calcitonin?
Bone
| Endocrine gland/ source of hormone | Hormone | Target organ or tissue |
|---|---|---|
| Thyroid | Calcitonin | Bone |
| Parathyroids | PTH (parathyroid hormone) | Bone, kidneys, intestine |
| Thymus (regresses in adulthood) | Thymopoetin | T-lymphocyte cells in blood |
| Pancreas (islet cells) | Insulin (from beta cells) | Most tissues, notably muscle and liver |
What are the three target organs of parathyroid hormone?
Bones, kidneys, small intestine. The classical target organs for parathyroid hormone (PTH) are the bone and kidneys.
Where is PTH found in the human body?
In conjunction with calcitriol, PTH regulates calcium and phosphate. PTH effects are present in the bones, kidneys, and small intestines. As serum calcium levels drop, the secretion of PTH by the parathyroid gland increases.
How does PTH work in the small intestine?
PTH Indirect Effects on the Small Intestines and Reabsorption of Calcium Starting at the kidneys, PTH stimulates the production of 1alpha-hydroxylase in the proximal convoluted tubule.
How does the release of PTH affect bone resorption?
In bone, PTH enhances the release of calcium from the large reservoir contained in the bones. Bone resorption is the normal destruction of bone by osteoclasts, which are indirectly stimulated by PTH. Stimulation is indirect since osteoclasts do not have a receptor for PTH; rather, PTH binds to osteoblasts, the cells responsible for creating bone.