Questions and Answers
What is the function of the skeletal system?
What is bone made of?
Cells, collagen, and calcium
What is a joint?
Point where bones meet
What is cartilage?
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What is muscle tissue made of?
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What happens during muscle contraction?
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What occurs during muscle relaxation?
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What is the function of a tendon?
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What type of muscle is found only in the heart?
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What type of muscle is found in the lining of inner organs?
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What type of muscle attaches to bones and is under voluntary control?
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How many bones do babies and adults typically have?
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What is an endoskeleton?
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What is the function of bone marrow?
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What is extension in terms of limb movement?
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What is flexion in terms of limb movement?
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What type of joint allows bones to bend and twist?
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What type of joint allows side-to-side and up-and-down movement?
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What type of joint allows back and forth movement?
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What type of joint allows rotation in nearly all directions?
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What type of joint allows very little or no movement?
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Study Notes
Skeletal System
- Provides essential functions: support, protection, and movement.
- Composed of both hard and flexible structures.
Bone
- Hard tissue primarily made of cells, collagen, and calcium.
Joint
- The point where two or more bones meet, enabling movement.
Cartilage
- Strong yet flexible and elastic tissue that reduces friction between bones and increases flexibility during movement.
Muscle
- Tissue comprised of long cells that have the ability to contract.
Contraction
- A process where muscle filaments move closer together, resulting in muscle shortening.
Relaxation
- A process where muscle filaments move away from each other, resulting in lengthening.
Tendon
- Connective tissue that links muscles to bones, facilitating movement.
Cardiac Muscle
- Specialized muscle found only in the heart, functioning involuntarily.
Smooth Muscle
- Muscle type located in the lining of inner organs; also involuntary.
Skeletal Muscle
- Muscle that attaches to bones, enabling voluntary movements of the skeleton.
Number of Bones
- Infants have over 300 bones; adults typically have 206 as some bones fuse during growth.
Endoskeleton
- An internal skeletal structure made of bone or cartilage, which grows with the organism.
Bone Marrow
- Tissue found inside bones responsible for producing red and white blood cells.
Extension
- The action of straightening a limb, increasing the angle between the bones of the limb.
Flexion
- The bending of a limb, decreasing the angle between the bones.
Types of Joints
- Gliding Joint: Enables bending and twisting movements (e.g., ankle, wrist, vertebrae).
- Pivot Joint: Allows side-to-side and up-and-down movements (e.g., base of skull).
- Hinge Joint: Facilitates back-and-forth movements (e.g., fingers, elbows, knees).
- Ball and Socket Joint: Provides multi-directional movement and rotation (e.g., shoulders, hips).
- Immovable Joint: Allows very limited or no movement (e.g., skull).
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Description
Test your knowledge of the musculoskeletal system with this engaging quiz! Learn about key terms such as skeletal system, bones, joints, cartilage, and muscles. Perfect for students and anyone interested in human anatomy.
