bones
Hydroxyapatite crystals strengthen bone. This topic is part of Human Body within Science & Nature. This page currently draws on 54 supporting questions, with answers and bonus facts available below.
bones trivia questions
What mineral gives bones much of their hardness?
Answer: Calcium phosphate
Bonus fact: Hydroxyapatite crystals strengthen bone.
Where are many blood cells produced?
Answer: Bone marrow
Bonus fact: Red marrow contains blood-forming stem cells.
What is the longest bone in the human body?
Answer: Femur
Bonus fact: The femur extends from the hip to the knee and is the body's longest and strongest bone.
Which cells are primarily responsible for breaking down old bone tissue during bone remodeling?
Answer: Osteoclasts
Bonus fact: Osteoclasts resorb bone, while osteoblasts build new bone tissue.
What major ankle bone articulates with the tibia and fibula?
Answer: Talus
Bonus fact: The talus transfers weight between the leg and foot.
Calcium is especially important for healthy bones and what?
Answer: Teeth
Bonus fact: Most body calcium is stored in bones and teeth.
What cartilage covers the ends of bones in many movable joints?
Answer: Articular cartilage
Bonus fact: Articular cartilage reduces friction and absorbs shock.
What bones form a protective cage around much of the chest?
Answer: Ribs
Bonus fact: The rib cage protects thoracic organs.
Collagen is a major structural protein in skin, bones, and what?
Answer: Connective tissues
Bonus fact: Collagen provides strength to many tissues.
Red bone marrow produces what?
Answer: Blood cells
Bonus fact: Hematopoiesis produces red cells, white cells, and platelets.
Which adult bones contain substantial red marrow?
Answer: Pelvis and sternum
Bonus fact: Much adult blood-cell production occurs in the axial skeleton and pelvis.
Bone density refers to how much mineral is packed into what?
Answer: Bone
Bonus fact: Higher mineral density generally means stronger bone.