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Anat-Muscl Prop/Name
Stack #215714
| Question | Answer |
|---|---|
| properties of muscle tissue | contractility, excitability, extensibility, elasticity |
| contractility | ability of a muscle to shorten with force (that is then used to generate action) |
| excitability | capacity of a muscle to respond to a hormonal or nervous stimulus |
| extensibility | muscle can be stretched to its normal resting length and beyond to a limited degree |
| elasticity | ability of muscle to recoil to its original resting length after being stretched |
| tendon | attaches muscle to bone |
| aponeurosis | a very broad tendon. like a flat sheet |
| aponeurosis locations | abdominal wall and back |
| origin/head | muscle end attached to the more stationary of the two bones, undergoes the least amount of movement when the muscle contracts |
| insertion | muscle end attached to the bone with the greatest movement |
| belly | largest portion of the muscle between the origin and insertion |
| agonist | muscle causing an action when it contracts |
| prime mover | one muscle out of several doing the same movement that is most responsible for the action |
| antagonist | a muscle working in opposition to an agonist |
| synergists | muscles that work together to cause a movement, muscles that perform the same action |
| fixators | stabilize joint(s) crossed by the prime mover |
| pennate muscles | "feather-like in shape", have one or more tendons extending through their body and the muscle fibers are arranged at an oblique angle to the tendon |
| unipennate muscle | muscle fibers attach to only one side of the central tendon |
| bipennate muscle | muscle fibers attach to both sides of the central tendon |
| multipennate muscle | multiple branches of the central tendon with fibers attaching on both sides |
| parallel muscle | the muscle fibers run parallel to its long axis |
| rectus | muscle fiber direction is vertical (straight up and down) |
| convergent muscle | has widespread muscle fibers that converge on a common attachment site |
| circular muscle/sphincter | the muscle fibers are concentrically arranged around an opening or recess |
| quadratus | rectangular |
| trapezius | trapezoidal (4 sides, none parallel) |
| deltoid | triangular |
| rhomboidal | rhombus |
| major | muscle that is larger than another muscle |
| minor | muscle that is smaller than another muscle |
| biceps | two tendons/heads of origin |
| triceps | three tendons/heads of origin |
| fusiform | tapering at both ends with a thick belly |
| digastric | two bellies |
Created by:
Jean-O
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