Imisipha yomntu

Ukubunjwa kwe-Anatomical, equkethe izicubu ze-muscle, ziyimisipha yomntu. Siyabonga kubo, kunokwenzeka ukuhambisa umntu kwindawo, basebenze intliziyo kunye nezinye izitho zangaphakathi. Umxholo weesisu zomzimba kumzimba wesetyhini ngowama-28-32%. Kwamadoda, eli lathisi liphezulu kwaye lifikelela kuma-45%.

Kukho iintlobo ezintathu zeethambo zesisu :

- Skeletal,

- elula,

Intliziyo.

Izihlunu ze-squelette ziqukethe iimbumba eziqhotyoshelweyo eziqokelelwe kwiimfumba. Ngaphakathi kwabo badlula imicu, equkethe iiprotheni, ngenxa yokuba umsebenzi ophantsi-ukunciphisa ufezeke.

Iimpawu ze-cardiac muscle zinesakhiwo esifana neefayili ezinqabileyo. Zidibene ngamacandelo ahlukeneyo. Ngenxa yolu hlobo, isisu senhliziyo sinakho ukukhawuleza ngokukhawuleza.

Izisipha zomzimba ezikhoyo zikhoyo kwiindonga zazo zonke izitho zangaphakathi. Ukunciphisa idatha ye-muscle fiber iyancipha.

Izisipha zeentloko zesintu zinokugcinwa kakuhle kunye nokunikezelwa kwegazi. Kwimfumba nganye yemisipha, izibilini, imilambo yegazi ifanelekile. Zine-shell, emele imveliso. Iimbilini eziya kwiimisipha ziqukethe i-motor ne-neurons. Izinto zangaphambili zithumela iimpembelelo ezivela emthonjeni womgogodla, ngenxa yeso sivumelwano se-fibric muscle. Ngaloo ndlela, izihlunu emzimbeni zenza ukuba zixakeke. Iimvakalelo ezivela kwintambo yomthambo zichaphazeleka yingqondo. Ngako oko, izenzo zenzeke ngokungathandabuzekiyo. Ngokuqhekeka, izihlunu zinyanzeliswa ukuba zihambise iinxalenye ezahlukeneyo zomzimba, ezibangela ukunyakaza komzimba okanye ukulondolozwa kwesimo esithile. Esi siphumo siphumelelwe ngenxa yomsebenzi odibeneyo kunye odibeneyo weentsimbi ezidlulayo kunye ne-flexors, ezenza izinto ezichaseneyo.

Izisipha zomntu zenza umsebenzi wokucwangcisa. Benza isivumelwano kwaye ngoko benza isithambo njengenqindi. Nayiphi na intshukumo idinga amandla amaninzi. Umthombo walo ukuchithwa kunye ne-oxydation yezinto eziphilayo (amafutha, i-carbohydrate, i-nucleic acid). Izinto ze-Organic kwiisisipha ze-muscle ziya kutshintshwa apho i-oksijeni imele ithathe inxaxheba.

Ngokuqhubeka nokusebenza, amandla okusebenza kwezihlunu ngokuya kancane. Le meko ibizwa ukukhathala. Emva kokuphumla, ubuchule bemisipha yomzimba buyasebenza bubuyiselwe ngokupheleleyo.

Imisipha eyintloko yomntu yenza imisebenzi efana nayo. Kuloo ndlela inokwenzeka ukuqhuba:

- Imisipha. Banikezela ukujikeleza nokujika kwentloko, ukugcinwa kwayo kwimeko yokuphila;

- trapezoidal. Uzisa umlanjana kunye namagxa ehlombe, uphakamisa ibhinqa lehlombe;

- deltoid. Umsebenzi oyintloko yintembeko yesigxina esingasemva, phambili, ukuhoxiswa kwicala;

- biceps (imisipha yeengalo ze-biceps). Unoxanduva lokutshintsha i-ingalo kwinqanaba elihlangeneyo ;

- triceps brachialis muscle. Yenza ukuhamba kwezandla emva, ukuxinezela emzimbeni, ukongezwa kwezandla;

- Imisipha. Zahlukaniswa zibe zii-extensors kunye ne-flexors, elandelana ngokulandelana kunye nokwakhiwa kwezandla kunye neminwe. Kukho kwakhona inkxaso kunye nama-pronator, aqhuba ukuhamba kwamathambo engqimba;

- i- muscle enkulu ye- pectoral ithwala ingalo kwisiqu, inciphisa ihlombe eliphakanyisiweyo, iphakamisa iimbambo;

- i-oblique isisu esiswini siphendule umzimba kwicala, kunye nokuqhekeza kwangokufanayo kususa isifuba phantsi, uguqule ikholamu yomgcini, pha kamisa i-pelvis ngokulungiswa kwesifuba;

- Isisu esiswini esifanelekileyo. Ngendlela yalo uhlangothi lwe-spine luyenziwa;

- i-muscle ephezulu kakhulu. Ngeendleko zakhe, isandla sincitshiswa. Uyakhupha kwakhona, ujikeleze ngaphakathi;

I-Gluteus muscle. Yenza ukuguquka nokwandiswa kwethanga ngaphandle. Ilungisa i-trunk kwindawo echanekileyo;

- iintsimbi zesisu. Ukubopha imilenze ehlangene needolo akukwazi ukucingelwa ngaphandle kokusebenza kwesi siqhelo;

- quadriceps i- femoris muscle. Imisongo ingapheleli kwixolo elihlangeneyo kuphela ngeendleko zomsebenzi wakhe;

- tibialis muscle. Ithatha inxaxheba kwandiswa kwonyawo, ngelixa liphakamisa umda walo.

Izidumbu zomntu ziyilungu ebaluleke kakhulu lomzimba womntu, ngenxa yokuba akuphelelwanga nje kuphela ukuhamba kwezinto kuphela, kodwa kwanomsebenzi odibeneyo wezitho zonke zangaphakathi.