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Questions and Answers
What is the total number of bones in the adult human body?
What is the total number of bones in the adult human body?
What is the function of bones that involves storing and maintaining minerals?
What is the function of bones that involves storing and maintaining minerals?
Which type of bone has a long shaft with two bulky ends?
Which type of bone has a long shaft with two bulky ends?
What is the primary component of short bones?
What is the primary component of short bones?
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What is the term for the ends of a long bone?
What is the term for the ends of a long bone?
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What is the function of the yellow bone marrow?
What is the function of the yellow bone marrow?
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What is the name of the smallest bone in the human body?
What is the name of the smallest bone in the human body?
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What is the term for the shaft of a long bone?
What is the term for the shaft of a long bone?
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Study Notes
Skeletal System
- The adult human body has 206 bones, divided into two divisions: axial skeleton (80 bones) and appendicular skeleton (126 bones)
Types of Bones
- Long bones: have a long shaft with two bulky ends or extremities, primarily composed of compact bone, with possible spongy bone at the ends
- Short bones: cube-shaped with equal vertical and horizontal dimensions, primarily composed of spongy bone covered by a thin layer of compact bone
- Flat bones: thin, flattened, and usually curved
- Irregular bones: bones that do not fit into the above categories
Gross Anatomy of a Long Bone
- Diaphysis: the shaft of the bone, composed of compact bone
- Epiphysis: the ends of the bone, composed mostly of spongy bone
Functions of Bones
- Framework: supports muscle, fat, and skin
- Protection: surrounds vital organs like skull, ribs, and pelvis
- Movement: muscles attach to bones to provide movement
- Mineral homeostasis: stores and maintains minerals like calcium and phosphorus
- Production of blood cells: red bone marrow produces red and white blood cells and platelets
- Storage: stores calcium, and yellow bone marrow has adipocytes that store fat
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Description
Learn about the 206 bones in the adult human body, divided into axial and appendicular skeleton, and their functions such as framework, protection, and more.
