肌学课件：上肢肌.pptxVIP

第三章肌学

Myology

第五节上肢肌

TheMusclesoftheUpperLimb

上肢带肌Themusclesoftheshoulder

臂肌Themusclesofthearm

前臂肌Themusclesoftheforearm

手肌Themusclesofthehand

一、上肢带肌

Themusclesoftheshoulder

三角肌deltoidmuscle

冈上肌supraspinousmuscle

冈下肌infraspinousmuscle

小圆肌teresminor

大圆肌teresmajor

肩胛下肌subscapularmuscle

Deltopectoraltriangle

Deltoid三角肌PectoralismajorLatissimusdorsiBicepsbrachii

Serratusanterior

、上肢带肌

1.三角肌

DeltoidMuscle

三角肌

Deltoid:

Anteriornart

前部

Middlepart

中部

Posteriorpart

后部

Scapula

Acromion

Clavicle

1.三角肌DeltoidMuscle

起点Origin:起自锁骨外1/3lateralthirdof

clavicle,肩胛骨的肩峰acromion和肩胛冈spineofscapula。

止点Insertion:止于肱骨的三角肌粗隆deltoid

tuberosityofhumerus。

作用Action:

-前部肌束使臂(肩关节)屈和内旋flexesandmediallyrotatesarm;

-中部肌束使臂(肩关节)外展abductsarm;

-后部肌束使臂(肩关节)伸和外旋extendsand

laterallyrotatesarm。

Supraspinatus

冈上肌

Spineofscapula

Infraspinatus

冈下肌

Teresminor

小圆肌

Teresmajor

大圆肌

Posteriorview

上肢带肌

上肢带肌

Subscapularis

肩胛下肌

Coracobrachialis

Teresmajor

大圆肌

Latissimusdorsi

Supraspinatus

Headsof

bicepsbrachii

sea

上肢带肌的作用

·冈上肌：始动并辅助三角肌外展肩关节。Thesuprapinatusinitiatesandhelpsdeltoidtoabductarmattheshoulderjoint.

·冈下肌：使肱骨(肩关节)外旋。The

infraspinatuslaterallyrotatesthehumerus.

·小圆肌：使肱骨(肩关节)外旋。Theteresminor

laterallyrotatesthehumerus.

。大圆肌：使臂(肩关节)内收和内旋。Theteresmajoradductsandmediallyrotatesarm.

·肩胛下肌：使臂(肩关节)内收和内旋。The

subscapularisadductsandmediallyrotatesarm.

图下肌肌腿

小圆肌肌腿

肩脾下肌肌腿

肩袖

网上肌肌腱

Subacromial

bursa(distended

withfluid)

Acromion

Supraspinatusmuscle

Coracoidprocess

Clavicle

冈上肌腱撕裂伤

Ruptureof

supraspinatus

tendon

Ruptureofsupraspinatustendon

Deltoid

肌腱袖

ThemusclotendinousCuff

肩胛下肌、冈上肌、冈下肌和小圆肌的肌腱分别止于肩关节的前方、上方、后方，腱纤维与关节囊纤维相交织，形成“肌腱袖”,可保持肱骨头与关节盂相接触，从而加强肩关节的稳定性。

Thetendonsoffourmuscles—thesuprasipinous,infraspinous,teresminor,andsubscapular

muscles,blendtoformamusculotendinous

sheatharoundtheglenohumera