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muscle
| Question | Answer |
|---|---|
| Tendon | collagen tissue attaching a muscle to a bone. |
| Skeletal Muscle | a type of muscle tissue attached to bones by tendons |
| Cardiac Muscle | heart and shit |
| Smooth Muscle | muscle tissue in which the contractile fibrils are not highly ordered, occurring in the gut and other internal organs and not under voluntary control. |
| Sarcomere | a structural unit of a myofibril in striated muscle, consisting of a dark band and the nearer half of each adjacent pale band. |
| Sarcoplasmic Reticulum | a specialized endoplasmic reticulum in muscle cells that acts as a storage and release site for calcium ions |
| Calcium Ions (Ca+2) | a positively charged calcium ion |
| Actin filaments | hin, flexible protein fibers that are a crucial part of the cytoskeleton in eukaryotic cells |
| Myosin filaments | thick filaments in muscle, composed of hundreds of myosin molecules that are arranged in a parallel, staggered array |
| Troponin | sarcomeric Ca2+ regulator for striated (skeletal and cardiac) muscle contraction |
| Tropomyosin | a two-stranded alpha-helical, coiled coil protein found in many animal and fungal cells |
| Adenosine Triphosphate (ATP) | money |
| Muscles must have at least 2 points of attachment | |
| The attachment that moves is called the Insertion; the attachment that remains stationary is the Origin | |
| Muscles must cross at least 1 joint | |
| Muscles work in opposing pairs: A muscle that decreases the angle of the joint is called a Flexor; a muscle that increases the angle of a joint is called an extensor | |
| Muscles can only pull / contract to get shorter. | |
| Macroscopic striations show the direction of muscle contraction. | |
| Muscle Fatigue | tired |
| Electromyogram (EMG) | a diagnostic procedure that measures the electrical activity of muscles |
| Tetany | a condition characterized by involuntary muscle contractions, spasms, and tremors caused by low levels of calcium in the blood |