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Questions and Answers
What is one of the primary functions of the skeletal system?
What is one of the primary functions of the skeletal system?
The appendicular skeleton includes the skull and rib cage.
The appendicular skeleton includes the skull and rib cage.
False
How many named bones are typically found in an adult human skeleton?
How many named bones are typically found in an adult human skeleton?
206
The _____ protects the spinal cord.
The _____ protects the spinal cord.
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Match the following parts of the axial skeleton with their primary function:
Match the following parts of the axial skeleton with their primary function:
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Which of the following joints allows movement in all directions?
Which of the following joints allows movement in all directions?
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Skeletal muscle is under involuntary control.
Skeletal muscle is under involuntary control.
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What connects bones together in the joint structure?
What connects bones together in the joint structure?
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The type of muscle found in the walls of the heart is called ______.
The type of muscle found in the walls of the heart is called ______.
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Match the type of joint with its description:
Match the type of joint with its description:
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Study Notes
Skeletal System
- Provides structural support and shape to the body.
- Protects vital internal organs like the brain, heart, and lungs.
- Facilitates movement through joint and muscle connections.
- Responsible for hematopoiesis, the production of blood cells.
- Adults typically possess 206 named bones.
Axial Skeleton
- Comprises bones forming the body's central vertical axis.
- Protects crucial organs:
- Skull - safeguards the brain.
- Rib Cage - shields the heart and lungs.
- Vertebral Column - encases the spinal cord.
Appendicular Skeleton
- Consists of bones in the limbs: upper and lower.
- Includes pectoral and pelvic girdles, linking limbs to the axial skeleton.
Joints
- Immovable Joints - Fixed joints with no movement.
- Movable Joints - Enable angular or rotary movements.
- Partially Movable Joints - Allow minimal movement.
- Ligaments - Connective tissues that join bones together.
Types of Joints
- Pivot Joint - Allows rotational movement (e.g., head and first vertebra).
- Gliding Joint - Facilitates sliding movement in multiple directions (e.g., wrists and ankles).
- Ball-and-Socket Joint - Offers freedom of movement in all directions (e.g., shoulders and hips).
- Hinge Joint - Permits bending and straightening (e.g., knees and elbows).
Muscular System
- Comprises approximately 600 muscles, enabling body movement.
- Provides form, shape, and posture to the body.
Types of Muscle Tissue
- Cardiac Muscle Cells - Striated and involuntary; found in heart walls.
- Smooth Muscle Fibers - Spindle-shaped and involuntary; located in the walls of hollow organs (excluding the heart).
- Skeletal Muscle Fibers - Striated and voluntary; attached to the skeleton for movement.
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Description
Explore the human skeletal system and its vital functions, including support, protection of internal organs, and movement facilitation. This quiz covers important aspects of both the axial and appendicular skeletons, including the numbers and types of bones in adults.
