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Which of the following is NOT a function of the human skeletal system?

• fatty acid storage

• calcium storage

• blood cell productions

• primary glycogen storage

The function of vertebrae is to protect the spinal cord, which is an example of a flat bone.

• True

• False

Which type of cell produces osteoid, a combination of proteins that become mineralized to produce new bone tissue?

• osteocytes

• osteoblasts

• osteoclasts

• osteoprogenitor cells

Which of the following is a major organic component of bone?

• collagen

• keratin

• hydroxyapatite

Which of the following statements best describes how parathyroid hormone (PTH) affects the serum concentration of calcium?

• • PTH stimulates osteoblasts, increasing serum

• • PTH stimulates osteoclasts, decreasing serum

• • PTH stimulates osteoblasts, decreasing serum

• • PTH stimulates osteoclasts, increasing serum

The increased thickness and bone remodeling of all bones by osteoblasts and osteoclasts on bone surfaces is called interstitial growth.

• True

• False

Type of joint that allow wide range of movement

• cartilagenous joint

• fibrous joint

• synovial joint

Synovial joints that allow you to swing and rotate the arms and lengs in many directions (the most mobile type of joint)

• Condyloid joint

• Ball-and-socket joint

• Pivot joint

• Hinge joint

When muscle contracts upon stimulation, calcium ions bind to __________, which exposes the binding sites for the myosin cross‐bridges to attach to.

• actin

• myosin

• tropomyosin

• troponin

The binding sites for the cross‐bridges are located on

• actin

• myosin

• troponin