Exam 36: Structure and Function of the Musculoskeletal System

The main energy source or fuel for skeletal muscle contraction is:

After puberty, the epiphyseal plate calcifies and the epiphysis and _____ merge.

Which of the following are both subclassifications of cartilaginous joints?

Which of the following shapes is not an accepted classification for the 206 bones of the axial and appendicular skeleton?

Skeletal muscle is controlled directly by the central nervous system via a system of motor and sensory nerve fibers. Which of the following terms is not used to describe skeletal muscle?

The component of the bone matrix that gives bone tensile strength is:

Hydroxyapatite in the bone matrix contains which of the following molecules in its crystalline structure?

Which of the following structures is the contractile unit of a muscle cell?

Blood vessels penetrate to the inner structures of the bone via:

Which of the following is not a synovial joint in the body?

The internal structure of bone is maintained by remodeling, a three-phase process in which existing bone is resorbed and new bone is laid down to replace it. Remodeling is done by clusters of bone cells called:

Which of these structures are not present in compact bone?

During which stage of muscle contraction does actin bind to myosin?

_____ ions directly control the contraction of muscles.

Osteocalcin is a:

The lowest ratio of motor units per unit of muscle would be seen in which of the following muscle groups?

Phase 2 of the bone remodeling cycle involves bone:

Which of the following describes a functional muscle contraction in which the muscle contracts but the limb does not move?

Which of the following glycoproteins binds to calcium in the bones?

Which molecule prevents a muscle contraction from occurring when the muscle is at rest?