*the muscular system*

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*NECK*

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*CHEST*

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*SHOULDERS*

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*HAMSTRINGS*

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*BICEPS*

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*~600 MUSCLES IN HUMAN BODY*

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*3 TYPES* –>

*SKELETAL MUSCLE*

*SMOOTH MUSCLE*

*CARDIAC MUSCLE*

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*’muscle cells’ contain ‘protein filaments’ of ‘actin’ + ‘myosin’ that slide past one another, producing a ‘contraction’ that changes the ‘length’ + ‘shape’ of the ‘cell’*

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(a ‘tendon’ is a tough band of ‘fibrous connective tissue’ that connects ‘muscle’ to ‘bone’ and is capable of withstanding ‘tension’)

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(the muscular system is an ‘organ system’ consisting of [‘skeletal’ / ‘smooth’ / ‘cardiac’] muscles)

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*permits movement of the body*

*maintains posture*

*circulates blood throughout the body*

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(the ‘muscular system in vertebrates’ is controlled through the ‘nervous system’…)

(…although some muscles (such as the ‘cardiac muscle’) can be completely autonomous)

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(together with the ‘skeletal system’ it forms the ‘musculo-skeletal system’, which is responsible for ‘movement’ of the ‘human body’)

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*WIKI-LINK*

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πŸ‘ˆπŸ‘ˆπŸ‘ˆ ☜ *β€œTHE MUSCULO-SKELETAL SYSTEM”*☞ πŸ‘‰πŸ‘‰πŸ‘‰

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πŸ’•πŸ’πŸ’–πŸ’“πŸ–€πŸ’™πŸ–€πŸ’™πŸ–€πŸ’™πŸ–€β€οΈπŸ’šπŸ’›πŸ§‘β£οΈπŸ’žπŸ’”πŸ’˜β£οΈπŸ§‘πŸ’›πŸ’šβ€οΈπŸ–€πŸ’œπŸ–€πŸ’™πŸ–€πŸ’™πŸ–€πŸ’—πŸ’–πŸ’πŸ’˜

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*🌈✨ *TABLE OF CONTENTS* ✨🌷*

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πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯*we won the war* πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯πŸ”₯