Podcast
Questions and Answers
Which of these is a type of fracture where the bone segments slide past each other?
Which of these is a type of fracture where the bone segments slide past each other?
- Overriding (correct)
- Spiral
- Greenstick
- Avulsion
Which type of bone projection is described as a large rounded prominence?
Which type of bone projection is described as a large rounded prominence?
- Tuberosity (correct)
- Epicondyle
- Spine
- Crest
What is the difference between a closed and an open fracture?
What is the difference between a closed and an open fracture?
- Closed fractures involve multiple bone fragments, while open fractures involve only a single break.
- Closed fractures involve a break in the bone but the skin is intact, while open fractures involve a break in the bone and the skin is punctured or torn. (correct)
- Closed fractures are typically caused by a direct impact, while open fractures are typically caused by a twisting force.
- Closed fractures are easier to treat than open fractures because they don't involve skin damage.
Which of these conditions describes a bacterial infection of bone?
Which of these conditions describes a bacterial infection of bone?
What type of fracture is characterized by a line of fracture perpendicular to the long axis of the bone?
What type of fracture is characterized by a line of fracture perpendicular to the long axis of the bone?
What portion of the skeletal system does the axial skeleton encompass?
What portion of the skeletal system does the axial skeleton encompass?
Which statement accurately describes the composition of bone?
Which statement accurately describes the composition of bone?
What is the primary function of osteoclasts in the bone?
What is the primary function of osteoclasts in the bone?
Which type of bone is characterized as hard, dense, and opaque upon X-ray?
Which type of bone is characterized as hard, dense, and opaque upon X-ray?
According to Wolff’s Law, what happens to bone density in response to increased forces?
According to Wolff’s Law, what happens to bone density in response to increased forces?
Which of the following structures represents a depression in the bone?
Which of the following structures represents a depression in the bone?
What type of projection is a rounded knuckle-like structure in bones called?
What type of projection is a rounded knuckle-like structure in bones called?
Which of the following is NOT considered a structural characteristic of bone?
Which of the following is NOT considered a structural characteristic of bone?
Flashcards
Avulsion Fracture
Avulsion Fracture
Separation of a tendon or ligament from bone.
Comminuted Fracture
Comminuted Fracture
A fracture that involves multiple bone fragments.
Hairline Fracture
Hairline Fracture
A break in a bone where there is no separation of the bone fragments.
Compression Fracture
Compression Fracture
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Osteomyelitis
Osteomyelitis
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Axial Skeleton
Axial Skeleton
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Appendicular Skeleton
Appendicular Skeleton
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Organic Material in Bone
Organic Material in Bone
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Inorganic Material in Bone
Inorganic Material in Bone
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Compact Bone
Compact Bone
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Cancellous Bone
Cancellous Bone
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Wolff's Law
Wolff's Law
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Osteoclasts
Osteoclasts
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Osteoblasts
Osteoblasts
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Study Notes
Skeletal System Overview
- The skeletal system is divided into two main parts: the axial and appendicular skeletons.
Axial Skeleton
- Forms the central part of the body
- Includes bones of the head, neck, thorax, trunk, and pelvis.
Appendicular Skeleton
- Attaches to the axial skeleton
- Includes the bones of the extremities (arms and legs).
Composition of Bone
- Bone is composed of 1/3 organic material providing elasticity and 2/3 inorganic material providing hardness and strength.
Types of Bone
- Compact bone: Hard, dense outer layer found in all bones. It is opaque on x-rays.
- Cancellous bone: Less dense, porous, or spongy, found in the inner portion of bones. It is less opaque on x-rays. Also known as trabecular bone.
Wolff's Law
- Bone density increases in response to increased forces.
- Bone density decreases in response to decreased forces.
Structures of Bone
- Epiphyseal plate: Growth plate, found at the ends of long bones.
- Endosteum: Membrane lining the medullary canal.
- Medullary canal: Cavity in the diaphysis of long bones which contains bone marrow.
- Periosteum: Tough outer membrane that covers bones.
- Diaphysis: Shaft of a long bone.
- Metaphysis: Region between the diaphysis and epiphysis.
- Epiphysis: End of long bone.
- Epiphyseal lines: Remnants of the growth plate.
- Compact bone: Dense outer layer of all bones.
- Cancellous bone: Less dense, inner layer of bones.
Bone Cells
- Osteoclasts: Bone resorption.
- Osteoblasts: Bone formation.
Types of Fractures
- Avulsion: Separation of tendon or ligament from bone.
- Closed: Fracture with intact skin.
- Comminuted: Multiple bone fragments.
- Complete: Complete separation of bone fragments.
- Complicated: Fracture with soft tissue damage.
- Compression: Bone is compressed.
- Greenstick: Bent on one side, separation on the other.
- Hairline/Stress: Minor line of fracture, no separation.
- Incomplete: Incomplete disruption.
- Overriding: Bone segments slide past each other.
- Open: Skin punctured or torn.
- Simple: Only bone involved, soft tissue uninjured
- Spiral: Spiral shape to line of fracture
- Spontaneous: No apparent traumatic cause
- Transverse: Line of fracture perpendicular to the long axis of the bone.
Common Skeletal Pathology
- Osteoporosis: Loss of bone mass.
- Osteopenia: Reduced bone mass.
- Osteomyelitis: Bacterial infection of bone.
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Description
Explore the essential components of the skeletal system, focusing on the axial and appendicular skeletons. Learn about the composition of bone, types of bone, and the implications of Wolff's Law on bone density. This quiz provides a comprehensive review of the structural aspects of bones.
