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General Myology
The study of muscles
| Question | Answer |
|---|---|
| what are the three different types of muscle | cardiac, smooth and skeletal |
| what are the three different morphologies of muscle | short, long, flat |
| describe a cardiac muscle | involuntary movement, controlled by the sympathetic and parasympathetic nervous system. has its' own pacemaker |
| describe a smooth muscle | involuntary movement, controlled by the sympathetic and parasympathetic nervous system. |
| describe a skeletal muscle | voluntary movement, surrounds bones |
| describe a short muscle | orbicular in shape.sphincter muscles. |
| describe a long muscle | has a muscle belly and both ends (1) a head (2) a tail. |
| what are the different styles of a long muscle | pennate, unipennate, multipennate, digastic |
| describe a flat muscle | membranous appearance, comes from a short tendon. found beneath the skin or in cavities. |
| what would a pennate long muscle look like | it would have fleshy bundles that are attached to either side of the tendon, looks like a feather type muscle. |
| what a unipennate long muscle look like | has a single fleshy bundle |
| a diagastic long muscle | two successive fleshy bodies separated by an intergastric tendon |
| a multipennate long muscle | has many different muscle bodies |
| explain what the origin of a muscle is | it is the proximal, less motile end of the muscle |
| explain the insertion of a muscle | it is the more distal part of the muscle and has quite motile |
| "Muscle Action" | when the muscle contracts and brings the origin and insertion points together. |
| describe the different muscle actions | extensor, flexor, abductor, adductor, supernator, pronator, rotator, dilator, tensor, depressor, elevator |
| what is a "bursa" | |
| describe the different layers of a muscle | muscle belly --> fasicle --> fibres --> myofibrils |
| Myofibrils contain what | they contain myofilaments which can be either action filaments (thin) or myosin filaments (thick) |
Created by:
epell5
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