Ñðåäíèå ìûøöû øåè, èëè ìûøöû ïîäúÿçû÷íîé êîñòè. (2024)

Îãëàâëåíèå òåìû "Ìûøöû øåè. Òîïîãðàôèÿ øåè. Ôàñöèè øåè.":

1. Ìûøöû øåè

2. Ïîâåðõíîñòíûå ìûøöû øåè — äåðèâàòû æàáåðíûõ äóã

3. Ñðåäíèå ìûøöû øåè, èëè ìûøöû ïîäúÿçû÷íîé êîñòè

4. Ãëóáîêèå ìûøöû øåè

5. Òîïîãðàôèÿ øåè

6. Ôàñöèè øåè ïî Ïðèâåñó

7. Òîïîãðàôè÷åñêàÿ àíàòîìèÿ øåè è åå îïåðàòèâíàÿ õèðóðãèÿ

Ìûøöû, ëåæàùèå âûøå ïîäúÿçû÷íîé êîñòè, — äåðèâàòû æàáåðíûõ äóã, çàëåãàþò ìåæäó íèæíåé ÷åëþñòüþ è ïîäúÿçû÷íîé êîñòüþ.

1. Ì. mylohyoideus, ÷åëþñòíî-ïîäüÿçû÷íàÿ ìûøöà, íà÷àâøèñü îò linea mylohyoidea íèæíåé ÷åëþñòè, îêàí÷èâàåòñÿ íà ñóõîæèëüíîì øâå, raphe, ïðîòÿãèâàþùåìñÿ îò âíóòðåííåé ñòîðîíû ïîäáîðîäêà ê òåëó ïîäúÿçû÷íîé êîñòè ïî ñðåäíåé ëèíèè âäîëü ãðàíèöû ìåæäó îáîèìè mm. mylohyoidei. Çàäíÿÿ ÷àñòü ìûøöû ïðèêðåïëÿåòñÿ ê òåëó ïîäúÿçû÷íîé êîñòè. Îáå mm. mylohyoidei, ñõîäÿñü âìåñòå, îáðàçóþò ìûøå÷íîå äíî ðòà, diaphragma oris, çàìûêàþùåå ñíèçó ðîòîâóþ ïîëîñòü.

2. Ì. digastricus, äâóáðþøíàÿ ìûøöà, ñîñòîèò èç äâóõ áðþøêîâ, ñîåäèíåííûõ êðóãëûì ïðîìåæóòî÷íûì ñóõîæèëèåì. Ïåðåäíåå áðþøêî, venter anterior, áåðåò íà÷àëî â fossa digastrica íèæíåé ÷åëþñòè è íàïðàâëÿåòñÿ íàçàä ê ïîäúÿçû÷íîé êîñòè. Çàäíåå áðþøêî, venter posterior, íà÷èíàåòñÿ â incisura mastoidea âèñî÷íîé êîñòè è èäåò ê ñóõîæèëèþ, ïîñðåäñòâîì êîòîðîãî îíî ñîåäèíÿåòñÿ ñ ïåðåäíèì áðþøêîì. Ïðîìåæóòî÷íîå ñóõîæèëèå ïðèêðåïëÿåòñÿ ê òåëó è áîëüøîìó ðîãó ïîäúÿçû÷íîé êîñòè.

3. Ì. stylohyoideus, øèëîïîäúÿçû÷íàÿ ìûøöà, ñïóñêàåòñÿ îò processus styloideus âèñî÷íîé êîñòè ê òåëó ïîäúÿçû÷íîé êîñòè, îõâàòèâ äâóìÿ ïó÷êàìè ïðîìåæóòî÷íîå ñóõîæèëèå äâóáðþøíîé ìûøöû.

Äåðèâàò ïåðåäíåé ïðîäîëüíîé ìûøöû òóëîâèùà:

Äîïîëíèòåëüíî: Àíàòîìèÿ: Íàäïîäúÿçû÷íûå ìûøöû âèä ñâåðõó íà ðèñóêå íà ðèñóíê.

4. Ì. geniohyoideus, ïîäáîðîäî÷íî-ïîäúÿçû÷íàÿ ìûøöà, ëåæèò íàä m. mylohyoideus ñáîêó îò raphe, ïðîòÿãèâàÿñü îò spina mentalis íèæíåé ÷åëþñòè ê òåëó ïîäúÿçû÷íîé êîñòè.
Ôóíêöèÿ. Âñå ÷åòûðå îïèñàííûå ìûøöû ïîäíèìàþò êâåðõó ïîäúÿçû÷íóþ êîñòü. Êîãäà îíà ôèêñèðîâàíà, òî òðè ìûøöû (mm. mylohyoideus, geniohyoideus, digastricus) îïóñêàþò íèæíþþ ÷åëþñòü, ÿâëÿÿñü òàêèì îáðàçîì àíòàãîíèñòàìè æåâàòåëüíûõ ìûøö. Ôèêñàöèþ ïîäúÿçû÷íîé êîñòè îñóùåñòâëÿþò ìûøöû, ðàñïîëîæåííûå íèæå íåå (mm. sternohyoideus, omohyoideus è äð.). Áåç ýòîé ôèêñàöèè íåâîçìîæíî îïóñêàíèå íèæíåé ÷åëþñòè, òàê êàê èíà÷å ïðîèçîéäåò ïîäíÿòèå áîëåå ëåãêîé è ïîäâèæíîé, ÷åì ÷åëþñòü, ïîäúÿçû÷íîé êîñòè. Ýòè æå òðè ìûøöû, â îñîáåííîñòè m. mylohyoideus, ïðè ñâîåì ñîêðàùåíèè âî âðåìÿ àêòà ãëîòàíèÿ ïîäíèìàþò ÿçûê, ïðèæèìàÿ åãî ê íåáó, áëàãîäàðÿ ÷åìó ïèùåâîé êîìîê ïðîòàëêèâàåòñÿ â ãëîòêó.

Ìûøöû, ðàñïîëîæåííûå âûøå ïîäúÿçû÷íîé êîñòè, âõîäÿò â ñîñòàâ ñëîæíîãî àïïàðàòà, âêëþ÷àþùåãî íèæíþþ ÷åëþñòü, ïîäúÿçû÷íóþ êîñòü, ãîðòàíü, òðàõåþ è èãðàþùåãî áîëüøóþ ðîëü â àêòå ÷ëåíîðàçäåëüíîé ðå÷è.  ïðîöåññå ýâîëþöèè ÷åëîâåêà ïðîèçîøëè ìîðôîëîãè÷åñêèå èçìåíåíèÿ â ýòèõ ìûøöàõ, ñâÿçàííûå, ñ îäíîé ñòîðîíû, ñ óìåíüøåíèåì õâàòàòåëüíîé ôóíêöèè ÷åëþñòåé, êîòîðóþ ïðèîáðåëè ðóêè à ñ äðóãîé — ñ ïîÿâëåíèåì àðòèêóëÿöèîííûõ äâèæåíèé. Ïîýòîìó ïðè ñðàâíåíèè ÷åðåïîâ íåàíäåðòàëüöà è ñîâðåìåííîãî ÷åëîâåêà ìîæíî âèäåòü ñëåäóþùèå èçìåíåíèÿ ìåñò ïðèêðåïëåíèÿ ñîîòâåòñòâåííûõ ìûøö:

à) ìåñòî ïðèêðåïëåíèÿ çàäíåãî áðþèòêà m. digastricus — incisura mastoidea, ïëîñêàÿ ó íåàíäåðòàëüöà, ñòàíîâèòñÿ ãëóáîêîé ó ñîâðåìåííîãî ÷åëîâåêà;
á) ìåñòî ïðèêðåïëåíèÿ ïåðåäíåãî áðþøêà òîé æå ìûøöû — fossa digastrica — ïåðåäâèãàåòñÿ ó ñîâðåìåííîãî ÷åëîâåêà ìåäèàëüíî;
â) ìåñòî ïðèêðåïëåíèÿ m. mylohyoideus — linea mylohyoidea — ñòàíîâèòñÿ áîëåå âûðàæåííîé è. îïóñêàåòñÿ íèæå, âñëåäñòâèå ÷åãî äèàôðàãìà ðòà ó ñîâðåìåííîãî ÷åëîâåêà ñòîèò íèæå;
ã) ìåñòî ïðèêðåïëåíèÿ m. geniohyoideus — spina mentalis — ó íåàíäåðòàëüöåâ ïî÷òè îòñóòñòâóåò è âîçíèêàåò ëèøü ó ñîâðåìåííîãî ÷åëîâåêà, ó êîòîðîãî ïîÿâëÿåòñÿ è ïîäáîðîäî÷íûé âûñòóï. Âñå ýòè èçìåíåíèÿ íà êîñòÿõ îáóñëîâëåíû ðàçâèòèåì íàçâàííûõ ìûøö, ó÷àñòâóþùèõ â ñâîéñòâåííîì òîëüêî ÷åëîâåêó àêòå ÷ëåíîðàçäåëüíîé ðå÷è.

Äîïîëíèòåëüíî: Àíàòîìèÿ: Ìûøöû äèàôðàãìû ïîëîñòè ðòà - ïîâåðõíîñòíûé ñëîé íà ðèñóíêå.

Äîïîëíèòåëüíî: Àíàòîìèÿ: Ìûøöû äèàôðàãìû ïîëîñòè ðòà - ãëóáîêèé ñëîé íà ðèñóíêå.

Äîïîëíèòåëüíî: Àíàòîìèÿ: Ìûøöû äèàôðàãìû ïîëîñòè ðòà - ôðîíòàëüíûé ðàñïèë íà ðèñóíêå.

Ìûøöû, ëåæàùèå íèæå ïîäúÿçû÷íîé êîñòè, — äåðèâàòû ïåðåäíåé ïðîäîëüíîé ìûøöû òóëîâèùà — îòíîñÿòñÿ ê ñèñòåìå âåíòðàëüíûõ ïðÿìûõ ìûøö øåè è ðàñïîëàãàþòñÿ ïî ñòîðîíàì ñðåäíåé ëèíèè òîò÷àñ ïîä êîæåé ñïåðåäè ãîðòàíè è òðàõåè, ïðîòÿãèâàÿñü ìåæäó ïîäúÿçû÷íîé êîñòüþ è ãðóäèíîé, çà èñêëþ÷åíèåì m. omohyoideus, êîòîðàÿ èäåò ê ëîïàòêå è ïî ñâîåìó ïðîèñõîæäåíèþ ïðåäñòàâëÿåò ñîáîé ìûøöó, ñìåñòèâøóþñÿ ñ òóëîâèùà íà ïîÿñ âåðõíåé êîíå÷íîñòè (òðóíêîôóãàëüíóþ) (ñì. ðèñ. 77).

1. Ì. sternohyoideus, ãðóäèíî-ïîäúÿçû÷íàÿ ìûøöà, íà÷èíàåòñÿ îò çàäíåé ïîâåðõíîñòè ðóêîÿòêè ãðóäèíû, ãðóäèíîêëþ÷è÷íîãî ñî÷ëåíåíèÿ è ãðóäèííîãî êîíöà êëþ÷èöû, èäåò êâåðõó è ïðèêðåïëÿåòñÿ ê íèæíåìó êðàþ ïîäúÿçû÷íîé êîñòè. Ìåæäó ìåäèàëüíûìè êðàÿìè mm. sternohyoidei íàõîäèòñÿ óçêèé âåðòèêàëüíûé ïðîìåæóòîê, çàêðûòûé ôàñöèåé, — òàê íàçûâàåìàÿ áåëàÿ ëèíèÿ øåè.
Ôóíêöèÿ. Òÿíåò âíèç ïîäúÿçû÷íóþ êîñòü. (Èíí. ÑV-VIII.)

2. Ì. sternothyroldeus, ãðóäèíî-ùèòîâèäíàÿ ìûøöà, ëåæèò ïîä ïðåäûäóùåé. Áåðåò íà÷àëî îò çàäíåé ïîâåðõíîñòè ðóêîÿòêè ãðóäèíû è õðÿùà I ðåáðà è ïðèêðåïëÿåòñÿ íà áîêîâîé ïîâåðõíîñòè ùèòîâèäíîãî õðÿùà (ê åãî linea obliqua).
Ôóíêöèÿ. Îïóñêàåò âíèç ãîðòàíü. (Èíí. CI-III)

3. Ì. thyrohyoideus, ùèòîïîäúÿçû÷íàÿ ìûøöà, ïðåäñòàâëÿåò ñîáîé êàê áû ïðîäîëæåíèå ïðåäûäóùåé ìûøöû, òÿíåòñÿ îò linea obliqua ùèòîâèäíîãî õðÿùà ê òåëó è áîëüøîìó ðîãó ïîäúÿçû÷íîé êîñòè.
Ôóíêöèÿ. Ïðè ôèêñèðîâàííîé ïîäúÿçû÷íîé êîñòè òÿíåò êâåðõó ãîðòàíü. (Èíí. ÑI-III.)

4. Ì. omohydideus, ëîïàòî÷íî-ïîäúÿçû÷íàÿ ìûøöà, ñîñòîèò èç äâóõ áðþøêîâ. Íèæíåå áðþøêî, íà÷àâøèñü ìåäèàëüíåå incisura scapulae, ïîäõîäèò ïîä ãðóäèíî-êëþ÷è÷íî-ñîñöåâèäíóþ ìûøöó, ãäå ïîñðåäñòâîì ïðîìåæóòî÷íîãî ñóõîæèëèÿ ïðîäîëæàåòñÿ â âåðõíåå áðþøêî, êîòîðîå èäåò ê òåëó ïîäúÿçû÷íîé êîñòè.
Ôóíêöèÿ. Ì. omohyoideus çàëåãàåò â òîëùå øåéíîé ôàñöèè, êîòîðóþ è íàòÿãèâàåò ïðè ñâîåì ñîêðàùåíèè, ñîäåéñòâóÿ ðàñøèðåíèþ êðóïíûõ âåíîçíûõ ñòâîëîâ, íàõîäÿùèõñÿ ïîä ôàñöèåé. Êðîìå òîãî, ìûøöà îòòÿãèâàåò êíèçó ïîäúÿçû÷íóþ êîñòü. (Èíí. Ci_m.)

Äîïîëíèòåëüíî: Àíàòîìèÿ: Ìûøöû ïðèêðåïëÿþùèåñÿ ê ïîäúçû÷íîé êîñòè - ñõåìà ïðèêðåïëåíèÿ.

Äîïîëíèòåëüíî: Àíàòîìèÿ: Ãðóäèíî-êëþ÷è÷íî-ñîñöåâèäíàÿ ìûøöà è ëîïàòî÷íî-ïîäúÿçû÷íàÿ ìûøöà - ñõåìà ïðèêðåïëåíèÿ.

Äîïîëíèòåëüíî: Àíàòîìèÿ: Ëîïàòî÷íî-ïîäúÿçû÷íàÿ ìûøöà - ñõåìà ïðèêðåïëåíèÿ.

Äîïîëíèòåëüíî: Òàáëèöà àíàòîìèÿ, ôóíêöèè, èííåðâàöèÿ ïîâåðõíîñòíûõ è ñðåäíèõ ìûöø øåè.

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