Chapter 6 muscles
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| show | Contraction
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| Muscle cells | show 🗑
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| Muscle composed of cylindrical multi nucleate cells with obvious striations; the muscle(s) attached to the body's skeleton; also called voluntary muscle | show 🗑
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| show | Endomysium
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| The connective tissue enveloping bundles of muscle fibers | show 🗑
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| the sheath of fibrous connective tissue surrounding muscle | show 🗑
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| A bundle of nerve or muscle fibers bound together by connective tissue | show 🗑
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| show | smooth muscles
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| show | cardiac muscle
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| show | Sarcolemma
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| the smallest contractile unit of muscle; extends from one A disc to the next | show 🗑
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| One of the principal contractile protiens found in muscle | show 🗑
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| A contractile protien | show 🗑
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| A specialized smooth endoplasmic reticulum | show 🗑
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| one neuron and all the skeletal muscle cell sit stimuates | show 🗑
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| show | Contractility
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| show | excitability
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| show | extensibility
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| show | elasticity
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| show | epimysium
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| Another connective tissue located outside the epimysium. It surrounds and separates muscles | show 🗑
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| A muscle is composed of numerous visible bundles called muscle fasciculi, which are surrounded by loose connective tissue | show 🗑
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| The fasciculi are composed of single muscle cells | show 🗑
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| A single cylindrical cell containing several nuclei | show 🗑
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| show | endomysium
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| show | myofibrils
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| Myofibrils consist of __ major kinds of protein fibers | show 🗑
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| show | Actin myofliaments
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| Thick myofilaments. They resemble bundles of minute golf clubs. | show 🗑
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| Actin and myosin myofilaments form highly ordered units _______ which are joined end to end to form the myofibril. | show 🗑
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| The basic structural and functional unit of the muscle. | show 🗑
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| show | Occurs as actin and myosin myofilaments slide past one another causing the sarcomeres to shorten. When the sarcomeres shorten it causes the muscle to shorten.
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| The sliding of actin myofilaments past myosin myofilaments during contraction | show 🗑
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| A contraction of n entire muscle in response to a stimulus that causes the action potential in one or more muscle fibers | show 🗑
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| A muscle fiber will not respond to stimulus until that stimulus reaches a level called ______, at which point the muscle fiber will contract maximally. This phenomenon is called the ______________ | show 🗑
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| The time between application of a stimulus to a motor neuron and the beginning of a contraction | show 🗑
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| The time of contraction | show 🗑
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| The time during which the muscle relaxes | show 🗑
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| where the muscle remains contracted without relaxing | show 🗑
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| show | recruitment
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| show | ATP (Adenosine Triphosphate)
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| show | ATP
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| Short-lived and unstable | show 🗑
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| It degenates to the more stable _______________________ plus phosphate | show 🗑
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| show | Creatine phosphate
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| show | Anaerobic respiration
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| with oxygen | show 🗑
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| results when ATP is used during muscle contraction faster than it van be produced in the muscle cells | show 🗑
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| The length of the muscle does not change, but the amount of tension increases during the contraction process. | show 🗑
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| show | Isotionic (equal tension)
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| show | Muscle tone
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| contract quickly and fatigue quickly. Well adapted to preform anaerobic metabolism. Ex. white meat of a chicken's breast. | show 🗑
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| show | Slow-twitch fibers
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| is the most stationary end of the muscle | show 🗑
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| is the end of the muscle undergoing the greatest movement | show 🗑
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| The portion of the muscle between the origin and the insertion is the | show 🗑
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| show | Origins or heads
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| Muscles that work together to accomplish specific movements are | show 🗑
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| show | Antagonists
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| show | Prime mover
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| show | Occipitofrontalis
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| closes the eyelids and causes "crows feet" wrinkles in the skin at the lateral corners of the eye | show 🗑
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| Puckers the lips | show 🗑
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| show | Buccinator
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| show | Orbicularis Oris and Buccinator
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| show | Zygomaticus
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| sneering | show 🗑
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| Frowning | show 🗑
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| show | Mastication
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| show | Intrinsic tongue muscles
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| show | Extrinsic Tongue muscles
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| Lateral neck muscle and prime mover | show 🗑
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| Muscles that move the thorax | show 🗑
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| Group of muscles on each side of the neck | show 🗑
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| show | 4 pairs
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