structure and function of the Body

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20 Terms

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The skeletal system is divided into what two systems?

the axial skeleton and the appendicular skeleton.

<p>the axial skeleton and the appendicular skeleton. </p>
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Fibrous Joints

are a type of joint that connects bones with dense connective tissue without allowing movement. also known as Synarthroses.

<p>are a type of joint that connects bones with dense connective tissue without allowing movement. also known as Synarthroses. </p>
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Syndesmosis

a type of fibrous joint in which two parallel bones are united to each other by fibrous connective tissue.

<p> a type of fibrous joint in which two parallel bones are united to each other by fibrous connective tissue.</p>
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Suture

a type of fibrous joint found between the bones of the skull, allowing minimal movement and providing stability.

<p>a type of fibrous joint found between the bones of the skull, allowing minimal movement and providing stability. </p>
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Gomphosis

a type of fibrous joint that anchors teeth to their sockets in the jawbone, allowing no movement.

<p>a type of fibrous joint that anchors teeth to their sockets in the jawbone, allowing no movement. </p>
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Cartilaginous Joints

types of joints where bones are connected by cartilage, allowing limited movement.

<p>types of joints where bones are connected by cartilage, allowing limited movement. </p>
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synovial Joints

allow free movement between the articulating bones.

<p>allow free movement between the articulating bones. </p>
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uniaxial Joints

a type of synovial joint that allows movement around only one axis, such as hinging or pivoting. examples include the elbow and knee.

<p>a type of synovial joint that allows movement around only one axis, such as hinging or pivoting. examples include the elbow and knee. </p>
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Biaxial Joints

a type of synovial joint that permits movement around two axes, allowing flexion and extension, as well as lateral movement. Examples include the wrist and knuckle joints.

<p>a type of synovial joint that permits movement around two axes, allowing flexion and extension, as well as lateral movement. Examples include the wrist and knuckle joints. </p>
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Multiaxial joints

type of synovial joint that permits movement in three anatomical planes (sagittal, frontal, and horizontal)

<p>type of synovial joint that permits movement in three anatomical planes (sagittal, frontal, and horizontal)</p>
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vertebral column

Cervical vertebrae

Thoracic Vertebrae

Lumbar Vertebrae

Sacral Vertebrae

Coccygeal vertebrae

<p>Cervical vertebrae</p><p>Thoracic Vertebrae</p><p>Lumbar Vertebrae</p><p>Sacral Vertebrae</p><p>Coccygeal vertebrae</p>
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Cervical Vertebrae (neck Region)

the seven bones (C1-C7) that make up the neck region of the spine, starting below the skull and supporting the head and allowing neck motion

<p>the seven bones (C1-C7) that make up the neck region of the spine, starting below the skull and supporting the head and allowing neck motion</p>
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Thoracic Vertebrae

The thoracic spine consists of 12 vertebrae, labeled T1 through T12.

<p> The thoracic spine consists of 12 vertebrae, labeled T1 through T12.</p>
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Lumbar Vertebrae

the five large bones that form the lower part of the human spine, numbered L1 through L5

<p>the five large bones that form the lower part of the human spine, numbered L1 through L5</p>
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Sacral Vertebrae

five individual vertebrae in the human spine that fuse together after puberty to form a single, triangular bone

<p>five individual vertebrae in the human spine that fuse together after puberty to form a single, triangular bone </p>
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Coccygeal Vertebrae

The 3 to 5 fused segments at the very end of the human vertebral column provide attachment points for pelvic muscles and ligaments and supporting the body in a seated position.

<p>The 3 to 5 fused segments at the very end of the human vertebral column provide attachment points for pelvic muscles and ligaments and supporting the body in a seated position.</p>
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<p>muscular system</p>

muscular system

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motor unit

the functional unit of a muscle, consisting of a single motor neuron and all the muscle fibers it innervates

<p>the functional unit of a muscle, consisting of a single motor neuron and all the muscle fibers it innervates</p>
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muscle Fiber

a single, long, cylindrical cell that is the fundamental contractile unit of skeletal muscle

<p>a single, long, cylindrical cell that is the fundamental contractile unit of skeletal muscle</p>
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Myosin and actin

two key protein filaments crucial for cell movement and muscle contraction

<p>two key protein filaments crucial for cell movement and muscle contraction</p>