In each example, the bone ends of the joint are held together by collagen fibers. But each is structured slightly different and is therefore classified by a different name. Complete each sentence, identifying the type of fibrous joint.

With age, range of motion __________ in joints and the production of synovial fluid __________.

When blood calcium levels are above normal the thyroid gland secretes __________ to stimulate the osteoblast cells to deposit bone matrix?

Depending on the action, specific muscles act as agonists, antagonists, and synergists. When the action changes, the roles of muscles may change as well.  Complete the sentences describing the various roles of muscles during particular actions.  

Homeostasis of blood calcium levels is performed by the parathyroid and thyroid glands.  What type of feedback loop is utilized to maintain homeostasis?

What type of synovial joint involves two flat (or nearly flat) bone surfaces?

When blood calcium levels drop below normal what cells are activated to degrade bone matrix and release calcium into the blood?

What are the functions of the skeletal system? Select all that apply

What happens when the epiphyseal plate is ossified?  

The two types of myofilaments are the thin filaments, composed primarily of the protein __________, and the thick filaments, composed of __________.