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Questions and Answers
What is the primary function of the skeletal system?
What is the primary function of the skeletal system?
Which division of the skeletal system includes the upper and lower limbs?
Which division of the skeletal system includes the upper and lower limbs?
What type of bone is characterized by a shaft and two ends?
What type of bone is characterized by a shaft and two ends?
What is the function of the periosteum?
What is the function of the periosteum?
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What type of joint allows for a range of motion?
What type of joint allows for a range of motion?
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What is the term for small bony projections?
What is the term for small bony projections?
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Which of the following is NOT a function of the skeletal system?
Which of the following is NOT a function of the skeletal system?
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What type of bone tissue is dense and forms the outer layer of bones?
What type of bone tissue is dense and forms the outer layer of bones?
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Study Notes
Skeletal System
Functions:
- Provides support and protection for the body
- Acts as a framework for muscle attachment
- Protects internal organs
- Produces blood cells
- Stores minerals such as calcium and phosphorus
Divisions:
- Axial Skeleton: includes the skull, vertebral column, ribs, and sternum
- Appendicular Skeleton: includes the upper and lower limbs, pelvis, and shoulder girdle
Bones:
- Long Bones: have a shaft (diaphysis) and two ends (epiphyses)
- Short Bones: cube-shaped and provide support
- Flat Bones: thin and provide protection
- Irregular Bones: complex shapes and provide support
- Sesamoid Bones: small and embedded within tendons
Bone Structure:
- Compact Bone: dense and forms the outer layer of bones
- Cancellous Bone: spongy and forms the inner layer of bones
- Bone Marrow: produces blood cells and stores fat
- Periosteum: a layer of tissue that covers the bone surface
- Endosteum: a layer of tissue that lines the bone marrow cavity
Joints:
- Synovial Joints: freely movable joints that allow for a range of motion
- Cartilaginous Joints: joints that are connected by cartilage and allow for limited movement
- Fibrous Joints: joints that are connected by fibrous connective tissue and allow for little or no movement
Bone Markings:
- Bony Landmarks: prominent features on the surface of bones
- Foramina: holes or openings in bones
- Foveae: small pits or depressions in bones
- Fissures: narrow grooves or slits in bones
- Tubercles: small bony projections
- Trochanters: large bony projections
Skeletal System
Functions
- Supports and protects the body
- Serves as a framework for muscle attachment
- Protects internal organs
- Produces blood cells
- Stores minerals like calcium and phosphorus
Divisions
- Axial Skeleton: skull, vertebral column, ribs, and sternum
- Appendicular Skeleton: upper and lower limbs, pelvis, and shoulder girdle
Bone Types
- Long Bones: shaft (diaphysis) and two ends (epiphyses)
- Short Bones: cube-shaped for support
- Flat Bones: thin for protection
- Irregular Bones: complex shapes for support
- Sesamoid Bones: small, embedded within tendons
Bone Structure
- Compact Bone: dense outer layer
- Cancellous Bone: spongy inner layer
- Bone Marrow: produces blood cells, stores fat
- Periosteum: tissue covering bone surface
- Endosteum: tissue lining bone marrow cavity
Joints
- Synovial Joints: freely movable, allow for range of motion
- Cartilaginous Joints: connected by cartilage, limited movement
- Fibrous Joints: connected by fibrous connective tissue, little or no movement
Bone Markings
- Bony Landmarks: prominent features on bone surface
- Foramina: holes or openings in bones
- Foveae: small pits or depressions in bones
- Fissures: narrow grooves or slits in bones
- Tubercles: small bony projections
- Trochanters: large bony projections
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Description
Learn about the functions and divisions of the human skeletal system, including the axial and appendicular skeletons, and the different types of bones.
