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45 Cards in this Set
- Front
- Back
Fibrous Joints |
Bones held together by fibrous CT |
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Cartilaginous Joints |
Joints held together by cartilage |
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Synovial Joints |
Bones held together by ligaments |
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Synarthrosis |
An immovable joint |
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Amphiarthrosis |
Slightly movable joint |
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Diarthrosis |
Freely movable joint |
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What are the 3 types of fibrous joints? |
Sutures, Soundemesos, Gomphoses |
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Sutures |
Occur only between the bones of the skull |
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Syndesmoses |
Permits slight movement with more fibrous CT Example is between the tibia and fibula |
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Gomphoses |
Immovable joint Is cone shaped like a peg and fits into a socket An example is the teeth in the mandible and maxillae |
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What are the 2 types of cartilaginous joints? |
Synchondroses, Symphyses |
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Synchondroses |
The connecting tissue is hyaline cartilage Example is the epipyseal plate |
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Symphyses |
Slightly movable Disc of fibrocartilage connects the bones Example is intervertebral discs |
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Articular Capsule |
A sleeve like capsule that encloses the synovial cavity |
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Synovial Fluid |
Secreted by synovial membrane Functions: Lubrication Shock absorption Supplying O2 and nutrients to cartilage Removing wastes from cartilage |
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Bursae |
Sac like structures containing synovial fluid that is located between tendons, ligaments, and bones that provides cushion. |
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Tendon Sheaths |
Wraps around the tendon and helps reduce friction. |
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Planar Joint |
Permits back and forth and side to side movements Found in intercarpal joints |
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Hinge Joints |
Produce an opening and closing motions that permints only extension and flexion Found in knee and elbow |
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Pivot joints |
Surface of one bone articulates with a ring formed partly by another bone and a ligament Causes rotational rotational movement |
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Condyloid joints |
Oval projection of one joint fits into the oval depression of another Permits flexion, extension, abduction, adduction, and circumduction Found in metacarpophalyngeal joints |
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Saddle Joints |
Permits flexion, extension, abduction, adduction, and circumduction Found in carpometacarpal joints |
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Ball and socket joints |
Permits flexion, extension, abduction, adduction, rotation, and circumduction Found in the shoulder and hip |
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Skeletal Muscle Tissue |
Voluntary Striated |
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Cardiac Muscle Tissue |
Involuntary Striated |
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Smooth Muscle Tissue |
No striations Involuntary |
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Excitability |
Ability to respond to stimuli by producing action potential (nerve impulse) |
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Contractibility |
Ability to contract forcefully when stimulated to generate force |
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Extensibility |
Ability to stretch without being damaged |
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Elasticity |
Ability to return to original length after contraction/extension |
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Fascia (bandage) |
Dense sheet or broad band of irregular CT that surround muscles |
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Superficial fascia |
Seperate muscles from skin, and protect against trauma |
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Deep fascia |
Group muscles and fills in spaces between them |
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Epimysium |
Outermost layer that covers entire muscle Seperates 10-100 muscle fibers into bundles called fascicles |
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Perimysium |
Surrounds individual fascicles |
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Endomysium |
Seperates individual muscle fibers from one another |
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Satellite Cells |
Regenerate damaged muscle fibers |
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T or F? The number of skeletal muscle fibers is set before you are born. |
True |
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Sarcolemma |
The plasma membrane of a muscle cell |
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Transverse (T tubules) |
Tunnel in from the plasma membrane and spreads muscle action potential to all parts of the muscle |
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Sarcoplasm |
The cytoplasm of a muscle fiber |
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Myofibrils |
Thrwad like structures which have a contractile function |
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Scaroplasmic Reticulum (SR) |
Membranous sacs which encircles each myofibril Stores calcium ions, the release of them triggers muscle contraction |
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Filaments |
Function in contractile process |
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Sacromeres |
Basic functional unit of a myofibril |