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Portage A&P1 Module 4 Exam Questions and Answers | Latest Version | 2025/2026 | Correct & Verified
What type of tissue makes up most of the skeleton in adults?✔✔ Bone tissue.
What is the function of osteoblasts in bone tissue?✔✔ They build new bone matrix.
What do osteoclasts do in bone remodeling?✔✔ They break down and resorb bone tissue.
What is the name of the hollow cavity within the shaft of a long bone?✔✔ The medullary cavity.
What type of marrow fills the medullary cavity in adults?✔✔ Yellow marrow.
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Where is red bone marrow primarily found in adults?✔✔ In flat bones and the ends of long bones.
What is the outermost membrane covering the bone?✔✔ The periosteum.
What part of a long bone is considered the epiphysis?✔✔ The end portion of the bone.
What structure separates the diaphysis from the epiphysis in a growing bone?✔✔ The epiphyseal plate.
What is the function of the epiphyseal plate?✔✔ It allows for lengthwise growth of the bone.
What does compact bone primarily provide to the body?✔✔ Strength and support.
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What is the main function of spongy bone?✔✔ It reduces bone weight and contains red marrow.
What is the unit structure of compact bone?✔✔ The osteon.
What is the name of the small canals that connect osteocytes to each other?✔✔ Canaliculi.
What are the concentric rings in an osteon called?✔✔ Lamellae.
What structure houses blood vessels within an osteon?✔✔ The central (Haversian) canal.
What kind of cartilage covers the epiphysis of long bones?✔✔ Articular cartilage.
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