Cells of which of the following is an receptor when blood calcium levels are high?
Thyroid glands
Hypothalamus
Parathyroid glands
Pituitary glands
Cells of which of the following is an receptor when blood calcium levels are low?
Pituitary glands
Parathyroid glands
Thyroid glands
Hypothalamus
Calcium is needed in the blood because the blood can transport the calcium to cells which need it. All of the following need calcium ions to occur, EXCEPT....
Muscle Contraction
Digestion
Blood Clot Formation
Nerve Signals
Which of the following is the control center when blood calcium levels are low?
Pituitary glands
Hypothalamus
Parathyroid glands
Thyroid glands
Which of the following is the control center when blood calcium levels are high?
Thyroid glands
Hypothalamus
Parathyroid glands
Pituitary glands
The parathyroid glands communicate with osteoclasts when blood calcium levels are low, using the hormone....
Calcitonin
Growth Hormone
Thyroid hormone
Parathyroid hormone
The thyroid glands communicate with osteoblasts when blood calcium levels are high, using the hormone....
Growth Hormone
Calcitonin
Parathyroid hormone
Thyroid hormone
Which of the following is an effector called in to do work when blood calcium levels are low?
Osteocytes
Osteoblasts
Osteoclasts
Which of the following is an effector called in to do work when blood calcium levels are high?
Osteocytes
Osteoclasts
Osteoblasts
Homeostasis of blood calcium levels exemplifies a ___________feedback system.