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Anatomy 7/8
Jillian Jackson-Study Stack
| Question | Answer |
|---|---|
| Skeletal muscle to shorten with force | Contractility |
| Skeletal muscle to respond to a stimuli | Excitability |
| Ability to be stretched | Extensibility |
| Recoil to their original resting length after they have been stretched | Elasticity |
| Connective tissue sheath that surrounds skeletal muscle | Epimysium |
| Connective tissue located outside the epimysium | Fascia |
| Muscle cells | Fibers |
| A muscle is composed of numerous visible bundles | Fasciculi (fasicle) |
| Fasciculi is surrounded by loose connective tissue called | Permysium |
| Each fiber is surrounded by a connective tissue sheath | Endomysium |
| The cytoplasm of each fiber is filled with | Myofibrils |
| Threadlike structures that stretch from one end of the fiber to another | Myofibrils |
| Myofibrils consist of two major kinds of protein fibers | Actin & myosin |
| Thin myofilaments | Actin |
| Thick myofilaments | Myosin |
| Actin and myosin myofilaments form highly ordered units | Sarcomeres |
| Join end to end to form the myofibril | Sarcomeres |
| Basic structural and functional unity of the muscle | Sarcomere |
| Occipito frontals | Raise eyebrows |
| Orbicularis oculi | Closes eyelids & causes "crows feet" |
| Orbicularis oris | Puckers the mouth |
| Buccinator | Flattens the cheeks |
| "Trumpet Muscle" | Buccinator |
| Two kissing muscles | Orbicularis oris & buccinator |
| Zygomaticus | Smiling |
| Lavator labiisuperioris | Sneering |
| Depressor anguli oris | Frowning |
| Chewing (another word) | Mastication |
| Intriminis tongue muscles | Change the shape of the tongue |
| Extrinsic tongue musles | Move the tongue |
| External intercostals | Elevate ribs during inspiration |
| Internal intercostals | Contract during forced expiration |
| Diaphram | Quiet breathing |
| Rectus abdominus | Flexes the vertebral column |
| Attaches humerus to the scapula | Deltoid |
| Triceps brachii | Extends forearm |
| Biceps brachii | Flexes and suppinates forearm |
| Brachialis | Primary flexor of forearm |
| Brachiaradialis | Flexes and pronates forearm |
| Flexor carpi | Flexes wrist |
| Extensor Carpi | Extends wrist |
| Flexor digitorum | Flexes digits |
| Extensor digitorum | Extends digits |
| Rhomboids | Draw the scapula toward the vertebral column |
| Pectoralis Major | Adducts and flexes the arm |
| Pectoralis Minor | Pulls the scapula inferiorly |
| Muscle tone | Constant tension produced by muscles |
| Fast-twitch mucles | Contract and fatigue quickly |
| Slow-Twitch muscles | Contract and fatigue slowly |
| Origin | Most stationary end of the muscle |
| Insertion | End of muscle undergoing to greatest movement |
Created by:
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