Homework Help

Describe how blood calcium levels are maintained, including the hormones involved...

user profile pic

najlaalth | Student, Undergraduate | (Level 1) Salutatorian

Posted March 23, 2012 at 11:41 AM via web

dislike 1 like

Describe how blood calcium levels are maintained, including the hormones involved and how they are regulated.

1 Answer | Add Yours

user profile pic

justaguide | College Teacher | (Level 2) Distinguished Educator

Posted March 23, 2012 at 1:15 PM (Answer #1)

dislike 1 like

Blood calcium levels are maintained at appropriate levels by the parathyroid hormones, vitamin D and a hormone known as calcitonin.

The parathyroid hormones and vitamin D are responsible for the increase of calcium levels in the blood. These hormones acting directly and by regulating the Vitamin D levels in the blood aid in calcium absorption in the small intestine, prevent loss of calcium from the body through the kidneys and regulate the excretion of phosphate in the body as an increase in phosphates leads to a fall in calcium levels

Calcitonin on the other hand is responsible for reducing calcium levels by increasing the outflow of calcium from the body through the kidneys and preventing calcium from entering the body from the bones.

Sources:

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes