Muscle and Bone Quiz

Where does the increase in the length of a long bone primarily take place?

• Diaphysis

• Epiphyseal plate

• Medullary cavity

• Cartilaginous plate

Which cells are responsible for the formation of new bone tissue?

• Osteons

• Osteocytes

• Osteoclasts

• Osteoblasts

Which of the following is NOT a bone of the axial skeleton?

• Skull

• Sternum

• Humerus

• Vertebrae

What causes the myosin binding site of an actin molecule to be exposed

• Calcium ions attaching to troponin

• ATP attaching to the myosin cross-bridge

• Acetylcholine crossing the neuromuscular junction

• A nerve impulse reaching the motor end plate of a motor nerve.

What is the role of Ca²⁺ in muscle contraction?

• Binds to troponin, altering its shape.

• Binds to actin, triggering the power stroke.

• Activates myosin by attaching to its binding site.

• Generates an action potential along the sarcolemma.

Which of the following is a primary role of the skeletal system?

• Producing hormones

• Transporting oxygen to tissues

• Regulating body temperature

• Providing structural support to the body

What is the primary role of muscle tendons in relation to joints?

• Produce movement by contracting

• Absorb shock and prevent injuries

• Store energy for muscle contraction

• Reinforce the joint and allow free movement

how does the muscular system protect internal organs?

• Allowing facial expressions

• Controlling joint movement

• Acting as a shock absorber

• Regulating blood vessel diameter

Which type of muscle is involuntary and found in the walls of internal organs?

• Skeletal muscle

• Cardiac muscle

• Smooth muscle

• Striated muscle

What is the primary role of the periosteum?

• Providing a site for muscle attachment

• Storing fat for energy

• Facilitating blood cell production

• Protecting the bone surface