Exploring Human Bones and Muscles

Which of the following bones is part of the axial skeleton?

• Femur

• Sternum

• Humerus

• Tibia

What is the primary function of red bone marrow?

• Fat storage

• Blood cell production

• Mineral storage

• Shock absorption

Which muscle group is primarily responsible for extending the knee?

• Hamstrings

• Quadriceps

• Gluteals

• Calves

What is the role of calcium ions in muscle contraction?

• They bind to troponin, allowing actin and myosin to interact.

• They provide energy for the contraction.

• They break down ATP.

• They transport oxygen to the muscle fibers.

Which bone is classified as a long bone?

• Patella

• Scapula

• Femur

• Vertebra

What is the primary function of the deltoid muscle?

• Flexion of the elbow

• Extension of the knee

• Abduction of the arm

• Rotation of the neck

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

• Skeletal muscle

• Cardiac muscle

• Smooth muscle

• Striated muscle

What is the function of osteoclasts in bone tissue?

• Bone formation

• Bone resorption

• Mineral storage

• Blood cell production

Which of the following movements is an example of flexion?

• Straightening the knee

• Bending the elbow

• Turning the head side to side

• Raising the arm laterally

What is the primary function of the biceps brachii muscle?

• Extension of the forearm

• Flexion of the forearm

• Abduction of the arm

• Rotation of the wrist