The Human Skeleton

Question 3 • PA Human Anatomy & Physiology A 2026-2027 WHITE IC

Which of the following did you include in your response? Check all that apply.

Answer

The periosteum is a thin, dense membrane that contains nerves and blood vessels that nourish the bone.

Compact bone is smooth and dense. It is the hard part of the bone.

Cancellous bone looks like a sponge and protects the bone marrow.

Bone marrow is a thick jelly that makes blood cells.

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