Podcast
Questions and Answers
Which of the following are functions of the skeletal system? (Select all that apply)
Which of the following are functions of the skeletal system? (Select all that apply)
What is the process of creating bones called?
What is the process of creating bones called?
Ossification
How many bones are in the adult human body?
How many bones are in the adult human body?
206
The _____ protects the spongy bone at the ends of a long bone.
The _____ protects the spongy bone at the ends of a long bone.
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The periosteum covers the bone and protects it.
The periosteum covers the bone and protects it.
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What is the function of yellow marrow?
What is the function of yellow marrow?
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What are osteoclasts responsible for?
What are osteoclasts responsible for?
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The _____ cavity stores yellow marrow.
The _____ cavity stores yellow marrow.
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Match the following bone cells with their functions:
Match the following bone cells with their functions:
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The epiphyseal plate helps in the width growth of bones.
The epiphyseal plate helps in the width growth of bones.
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Study Notes
Skeletal System Functions
- Support
- Protection
- Assist in movement
- Mineral homeostasis and blood cell production
Bone Classification
-
Axial:
- Relative distance from midline: Middle
- Shape: Long, flat, irregular
- Examples: Ribs, vertebrae, humerus
-
Appendicular:
- Relative distance from midline: Middle/sides
- Shape: Long, short, flat, irregular
- Examples: Femur
Long Bone Structure
- Epiphysis: Ends of the bone, protect spongy bone
- Diaphysis: Shaft of the bone, protects compact bone
- Articulating Cartilage: Prevents contact
- Periosteum: Covers bones, protects, and strengthens diaphysis
- Spongy Bone: Ends and center, contains red and yellow marrow, stores fat (energy), and has hemopoiesis
- Compact Bone: Ends and center, contains red and yellow marrow, stores fat (energy), and has hemopoiesis
- Medullary Cavity: Stores adipocytes (fat cells) - helps with growth length
Bone Marrow
- Red Marrow: Hemopoiesis (blood cell production)
- Yellow Marrow: Stores fat (energy)
Bone Cells
- Osteogenic: Bone-maker
- Osteoblasts: Bone-makers, create bone tissue
- Osteocytes: Maintain bone tissue
- Osteoclasts: Bone-breakers, resorption
Ossification and Resorption
- Ossification: Process of creating bones
- Resorption: Process of breaking down bones
Other Bone Structures
- Trabeculae: Supporting structures in spongy bone
- Haversian/central canal: Central channel in osteon, contains blood vessels
- Lacunae: Small cavities with osteocytes
- Lamellae: Rings of calcified matrix that surrounds central canal
- Canaliculi: Small channels connecting lacunae
Girdles Composition and Classification
- Pectoral Girdle: Two scapula bones
- Pelvic Girdle: Two large coxal bones
- Provide support for the limbs
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Description
Dive into the fascinating world of the skeletal system with this quiz covering essential functions and classifications of bones. Explore the structure of long bones and the role of bone marrow in our body. Test your knowledge on axial and appendicular bones to see how well you understand human anatomy.
