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Questions and Answers
Describe the functions of the skeletal system?
Describe the functions of the skeletal system?
•Movement. •Support. •Storage •Manufacturing •Protection
How are bones classified?
How are bones classified?
Shape Ex.)Femur/long bone
What is the primary function of the red bone marrow?
What is the primary function of the red bone marrow?
The periosteum is a dense fibrous membrane that lines the medullary cavity.
The periosteum is a dense fibrous membrane that lines the medullary cavity.
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What part of the long bone is known as the shaft?
What part of the long bone is known as the shaft?
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The _______ covers the ends of the bones where they meet other bones.
The _______ covers the ends of the bones where they meet other bones.
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Match the following parts of a long bone with their descriptions:
Match the following parts of a long bone with their descriptions:
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Which statement accurately describes the yellow bone marrow?
Which statement accurately describes the yellow bone marrow?
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The epiphyseal line indicates where cartilage growth has occurred in a long bone.
The epiphyseal line indicates where cartilage growth has occurred in a long bone.
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Where do we find spongy bone?
Where do we find spongy bone?
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Where do we find compact bone?
Where do we find compact bone?
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How do spongy bone and compact bone differ?
How do spongy bone and compact bone differ?
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Study Notes
Anatomy of a Long Bone
- A long bone is a type of bone characterized by its elongated shape
- It's composed of different parts and tissues
- Major sections include: epiphysis, metaphysis, diaphysis
Epiphysis
- Located at the ends of the long bone
- Contains spongy bone
- Covered with articular cartilage
- Involved in reducing friction and shock absorption
Metaphysis
- Located between the diaphysis and epiphysis
- Site of bone growth in children
- Contains a layer of cartilage (epiphyseal plate)
Diaphysis
- The shaft of the long bone
- Primarily made of compact bone
- Contains a hollow medullary cavity, which holds yellow bone marrow
Medullary Cavity
- A hollow space within the diaphysis
- Contains bone marrow: yellow bone marrow (primarily fat) and red bone marrow. Red marrow produces blood cells
Spongy Bone
- Found in the epiphyses of long bones
- Porous structure for strength and lightness
Compact Bone
- Dense, hard outer layer of the diaphysis
- Provides strength and support to the bone
Periosteum
- A tough, fibrous membrane that covers the outer surface of the bone
- Essential for bone growth, nourishment, and repair
Articular Cartilage
- Covers the joint surfaces of the epiphyses
- Smooths joint movement
Epiphyseal Line
- Remnant of the growth plate (epiphyseal plate)
- Marks the region where bone growth occurred during childhood
Blood Vessels
- Run throughout the bone, within the canals
- Supply nutrients and oxygen to bone cells
- Important for bone health and function
Other terms
- Red bone marrow: Produces red blood cells, white blood cells, and platelets
- Yellow bone marrow: Primarily composed of fat cells, storing energy
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