Question

1. The majority of calcium in the body plays a structural role and is associated with bones and teeth. The remaining calcium is found in the blood and plays an import role in __________________________________. a. muscle contraction, neural signaling, and blood pressure regulation b. the production of neurotransmitters c. protecting cell membranes from oxidative damage d. lipid circulation and night vision

2. JoAnn wants to learn more about calcium homeostasis. She found that the hormones _________________________ help to regulate calcium balance in the blood. a. thyroxin and aldosterone b. angiotensinogen and renin c. antidiuretic hormone and thyroxin d. calcitriol and parathyroid hormone

3. There are two types of cells that are involved in the process of bone remodeling. Cells that form new bone are called _______________________. a. osteoblasts b. calbindin c. hydroxyapatites d. osteoclasts

4. Another mineral that is important for healthy bones is ______________. a. iron b. zinc c. magnesium d. iodine

5. JoAnn was told that it is important to drink several large glasses of water every day. When a person becomes dehydrated, the pituitary gland increases its release of __________________. a. antidiuretic hormone b. angiotensinogen c. aldosterone d. calcitonin

Answer 1

1. a. muscle contraction, neural signaling, and blood pressure regulation

2. d. calcitriol and parathyroid hormone

3. a. osteoblasts

4. c. magnesium

5. a. antidiuretic hormone