Which of the following glands or organs produces hormones that tend to decrease blood calcium levels?
A) pineal gland
B) thyroid
C) parathyroid
D) spleen

Question

Quizplus · Accepted Answer

The thyroid produces hormones that decrease blood calcium levels. The parathyroid gland produces hormones that increase blood calcium levels. The pineal gland produces melatonin, which regulates circadian rhythms and sleep patterns, but does not directly affect blood calcium levels. The spleen is not an endocrine gland and does not produce hormones that affect blood calcium levels.

Which of the Following Glands or Organs Produces Hormones That