Structure of Bone

What is one primary function of bones in the human body?

• Producing digestive enzymes

• Providing structural support

• Filtering waste from blood

• Generating electrical impulses

How do we define compact bone?

• The dense outer layer of bone

• The inner layer of bone

• The endosteum of bone

• The part of bone that we touch

What is the dense outer portion of a bone called?

• Spongy bone

• Periosteum

• Compact bone

• Medullary cavity

Which part of a long bone is characterized by having paper-thin compact bone?

• The diaphysis

• The medullary cavity

• The periosteum

• The epiphysis

Why is it so painful when we break a bone? What membrane layer contributes to this pain sensation?

What type of tissue is primarily found within the medullary cavity of a long bone, serving as an energy reserve?

• Red bone marrow

• Cartilage

• Adipose tissue

• Dense irregular connective tissue

How are the trabeculae in spongy bone oriented?

• Randomly

• Perpendicular to stress lines

• Precisely in direct lines of stress

• Parallel to compact bone

What important substance is found in the spaces between the trabeculae of spongy bone?

• Yellow bone marrow

• Compact bone

• Red bone marrow

• Cartilage

What is the primary function of erythrocytes?

• Fighting infection

• Clotting blood

• Carrying oxygen

• Repairing tissue

Which of the following bones contains red bone marrow in adults?

• Phalanges

• Sternum

• Patella

• Ulna