Presentation on theme: "Muscular System (Chapters 9 and 10)"— Presentation transcript:
1Muscular System (Chapters 9 and 10) Function- transforms chemical energy (_____) into _______________energy, so that the muscles are capable of exerting a ________.
2Muscle Overview Muscle functions: _______________ _______________ - voluntary and involuntary_______________ _______________ - working against gravity_______________ and _______________ joints to avoid damageGenerating __________through movement
3Muscle Overview Functional characteristics of Muscle: _______________ response to a stimulus_______________ shorten when adequately stimulated_______________ ability to be stretched or extended (even beyond their resting length)_______________ the ability of a muscle fiber to recoil and resume its resting length after being stretched
4Muscle Overview Muscle fibers/ _______________ : formed from the fusion of _______________ (_______________ cell that gives rise to muscle cells)long, _______________, _______________ cellsContain _______________ / myofibers called ______ and _________ that are responsible for muscle contraction.
5Skeletal Muscle Attach to and _______the _______________ Have the _______________ of the muscle types_______________ stripes along the muscle tissueCan be controlled _______________
6Skeletal Muscle Structure- Gross _______________– connective tissue covering that surrounds the muscle._______________– Connective tissue that joins bones to muscles.
7Skeletal Muscle Structure- Gross _______________ : connective tissue covering that surrounds the fascicle_______________ : bundle of muscle fibers__________and ___________supply is present so the muscles can react to stimulus and receive proper _____________ to function and receive energy.
8Skeletal Muscle Structure- Gross Attachments:Most span __________ and attach to bones in at least ___ locations._______________ muscle attachment in which moves toward the ____________ bone_______________ muscle attachment that moves toward the ____________ or less ____________ bone.
9Skeletal Muscle Structure- Gross Ways muscle attach:__________- the ____________ of the muscle is fused to the ____________ of a bone of perichondrium of a cartilage (ex. __________).___________- the muscle’s connective tissue wrappings extend beyond the muscle as a ropelike ____________ ; common (ex. __________ ).
10Skeletal Muscle Structure- Cellular ____________ ________ is the muscle cell.Long and ____________ cells____________, because of ____________ cellsBecause of the ____________ of cells, the names of certain structures are different, but the primary ____________ is the same.
11Skeletal Muscle Structure- Cellular One muscle fiber____________ : connective tissue covering that surrounds the fiber
12Skeletal Muscle Structure- Cellular Endomysium____________ : plasma membrane; below this are ____________ and ________________________ : cytoplasm of the muscle fibers; contains large amounts of ____________ (stored ____________ )____________ ____________ : endoplasmic reticulum; releases ____________ ions during contraction and absorbs them during relaxation.____________ : red pigment that stores ____________ within the protein.Look at myofibrils (next slide)
13Cellular structure of a muscle ____________ : (bundles of ____________ ) Contain the ____________ elements of the muscle cell.____________ : a repeating series of ____________ ____________ ____________ ____________ bands.
14Sarcomere (a segment of myofibril) ____________(area between 2 Z disks) made of: 1 ____________ Thick ____________ protein; have a light H zone present when relaxed and is bisected by an M line. 2. I band- Thin Actin protein
15MyofilamentactinfasciclemyosinMuscle cellMyofilamentThe ____________ of the thin past the thick produces muscle ____________ (____________ )
16Muscle Contraction and Relaxation The ____________ ____________ has a high concentration of ____________ ions ( ______ )A muscle ______ sent to the sarcoplasmic reticulum causes the membrane to release ______The presence of ______ allows links to be formed between ______ (______ ) and ______ (______ )Thick filaments have a ______ head which attach to the ______ on the thin filament.These linkages are called ______ ______ .______ ______ attach to microtubules at each A and I band junction forming an elongated tube; can conduct impulses to the deepest parts of the tissue signal for the release of ______ .