Term
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Definition
Is voulntary, straited,many nucleses, parralell arragment
connective tissue
skeletal tissue
blood vessels
Nerves |
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Term
| Functions of skeletal muscles |
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Definition
movment
body posture
support soft tissue
aids digestive and urinary system
body temp
nuttrient storage |
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Term
| How is skeletal tissue attached to bones and diffirent points of attachemnt |
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Definition
Attached by connective tissue (tendons and aponerius)
origin is the point of attachment (little movment)
Inseration is the attachment at oppsit end (most movment) |
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Definition
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Definition
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Definition
| Help other muscels move more effeciently |
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Term
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Definition
| Act with other muscels to complete a task |
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Term
| Nomencalture of skeletal muscle Shape |
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Definition
Tringle-deltoid
Rectangle-quadretus
Dimoind-Rohmboid
Round-teres |
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Term
| Nomencalture of skeletal muscle Size |
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Definition
Maximus-largest
Minimus-smallest
Longus-long
brevis-Short |
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Term
| Nomencalture of skeletal muscle Location |
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Definition
Pectoralis-chest
Gulteus-butt |
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Term
| Nomencalture of skeletal muscle Heads |
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Definition
Bicep-2
Tricep-3
Quadrocep-4 |
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Term
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Definition
| Reduces the angel between two bones |
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Term
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Definition
| Increases the angel between two bones |
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Term
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Definition
| Moves body part away from the midline |
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Term
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Definition
| Brings body aprt closer to midline |
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Definition
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Term
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Definition
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Definition
| Rotates body part to face fowards or up (twist palm of hand) |
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Term
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Definition
| Moves body part to face down/backwards (palm of hand) |
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Term
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Definition
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Term
| How are skeletal muscels attached to bone all three parts |
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Definition
Each muscel fiber is sournouded by Connective tissue (CT) called endomysium this is how blood and nerve fibers reach muscels by the Endomysium
The muscle fibers are then grouped into fassicales these fasicales have a seeth made of perimysium
The muscle itself is covered by a connective tissue layer called the epimysium. The fascia, a layer of fibrous tissue that separates muscles from each other (deep fascia) and from the skin (superficial fascia).
Collagen fibers of the epimysium continue as a strong, fibrous tendon that attaches the muscle to a bone. The epimysium merges with the periosteum of the bone. |
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Term
| Orginization of skeletal Muscles |
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Definition
Skeletal muscle is made out of fassicales seperated by perimusyum and surrounded by epimysum
fasicle is made out of musccel fibers, sepereted by
endomysium sorounded by perimysum
Muscle fibers are the smallest functionl unit composed of myrofibrles surrounded by endomysium and contains axons and nurons |
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Term
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Definition
| Layer of areolar connective tissue that covers each and every muscle fiber alos has cappliaries and nerves |
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Term
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Definition
| Also known as the muscle cell special "cells" that allow for conraction and thus momvment |
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Term
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Definition
| Small filliments located in the cytoplasm of straited muscle. these filliments contain protiens wih give them the muscle its shape |
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Term
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Definition
| Stem cells that are a major player in muscel repair an grwoth think LIFTING |
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Term
| Tell me about Thin Filiment |
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Definition
| Main compent is actin actin forms twisting chains Other two protiens are tryopmisin and troponin The molucules of tyropomyosin covers the myosin binding site during relaxation |
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Term
| Tell me about thick filliment |
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Definition
| Thick filliment formed from a protein called myosin Very elasticibility and contractibility shape is similer to twisted hockey sticks or cross bridges due to the myosin head and tail |
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Term
| How dose Muscle contraction occur |
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Definition
| The Brain sends a single to the Nuromuscular junction wich causes a influx of calium ions into the sarcoplasm the calium binds to Troponin C of the thin filiment causing a change that moves trypomyosin awawy from the head binding sites of the actin this allows the myosin head to ind to the thin filiment towards the sacromere ATP then binds to the myosin head causing it to uncouple from actin allowing prosses to start again |
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Term
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Definition
| At rest the muscle produces more ATP then needed wich is tunred into creatine wich then creates Creatine phosphate |
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Term
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Definition
| Muscels use glucose by two pathways Ananbolic or Aerobic Each molucle produces 2 ATP and 2 pyruvate molocules if no o2 is present the pyruvate will change to lactic acid wich will lead to fatigue this is common in long strenous activity Aerobic resperation will break Pyruvate to befrom the nesscary actions 95% of the ATP needed daily is from aerobic |
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Term
| how many total skeletal muscles |
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Definition
| 400 40-50% of the bodys weight |
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