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Chapter 36 Review
Skeleton, Muscular, and Integumentary Systems
Natthinee Sudjaitham
Kwanruthai Glinbua
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The skeletal system
• The skeletal helps support the body
• Protects internal organs
• Allows movement
• Stores mineral reserves
• Provides a site for blood cell in formation
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Types of joints
• Immovable Joints
• Slightly Movable Joints
• Freely Movable Joints
- Ball-and-Socket Joint
- Hinge Joint
- Pivot Joint
- Saddle Joint
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Bone• Bones are surrounded by
periosteum• Bone is attached to each
other by ligaments• Cartilage helps bones
move without harming • Inside bone it contains a
soft tissue called bone marrow
• Haversian canals are contain blood vessels and nerves
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3 Types of Muscle Tissues• Skeletal Muscles
- are responsible for voluntary movements.- are striated and have many nuclei.- are controlled by the nervous system.
• Smooth Muscles- are not voluntary movement.- are not striated and have one nucleus.- are not controlled by the nervous system.
• Cardiac Muscles- are found in only the heart.- is striated and have one nucleus.- not controlled by the nervous system directly.
Natthinee Sudjaitham
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Muscle Contraction
Natthinee Sudjaitham
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Control of Muscle Contraction
• A neuromuscular junction is the point of contact between a motor neuron and a skeletal muscle cell.
• Acetylcholine (a neurotransmitter released by the motor neuron) diffuse a synapse to produce the impulse.
• The impulse releases the calcium ions that make the myosin and actin filaments to interact.
Natthinee Sudjaitham
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How Muscles and Bones Interact
• Tendons where the skeletal muscles are joined the bones.
• When one muscle contracts, the other relaxes.
• Muscle tones help for keeping your back and legs straight and the head upright.
Natthinee Sudjaitham
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The Integumentary System
• The wall against infection and injury
• Removes waste products from the body
• Helps to regulate body temperature
• Provides protection against UV from the sun
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Intergumentary organs
• Skin - Epidermis layer - Dermis layer• Hair
- produced by cells at the hair follicles.• Nail
- grow from nail root in which produce keratin to protect the tips of fingers and toes. Natthinee Sudjaitham
Kwanruthai Glinbua