Pectoral scapular regions
This presentation is the property of its rightful owner.
Sponsored Links
1 / 29

Anatomy PowerPoint PPT Presentation


  • 48 Views
  • Uploaded on
  • Presentation posted in: General

Pectoral & Scapular Regions. Anatomy. ... Before we start. شيت VS كتاب علم VS علامة. What is Muscle ?. A contractile organ consisting of a special bundle of muscle tissue, which moves a particular bone, part, or substance of the body. Types of muscles ….

Download Presentation

Anatomy

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Pectoral scapular regions

Pectoral & Scapular Regions

Anatomy


Before we start

...Before we start

  • شيت VS كتاب

  • علم VS علامة


What is muscle

What is Muscle ?

  • A contractile organ consisting of a special bundle of muscle tissue, which moves a particular bone, part, or substance of the body.


Types of muscles

Types of muscles …

  • Skeletal muscles : a form of striated muscles attached to bones by tendons and they under control of somatic nervous system ((voluntary controlled))...existing throughout the human body.

  • Smooth muscles : Non striated muscles and they under control of autonomic nervous system ((involuntary controlled))… existing in  wall of blood vessels ,lymphatic vessels, the urinary bladder , male and female reproductive system, gastrointestinal tract, respiratory tract..etc.

  • Cardiac muscles :striated muscles controlled by the autonomic nervous system ((involuntary controlled)).. Found only in the walls of the heart.


Functions of skeletal muscles

Functions of skeletal muscles

.1. Movement((وضعية الجسم2. Posture ((.3. Support & protection4. Heat regulation.


How muscles are named

How muscles are named !

1.Size of muscles : minor , major2.Shape of muscles: Deltoid ,Teres3.Main action: Flexor,Extensor4.Number of tendons of origin :Bicecps,Triceps

5.Relation of muscle to the bone : Supraspinatus,Infraspinatus6.Origin &insertion : Brachioradialis (from Brachium(humerus) to radius)


I should memorize all these muscles

I should memorize all these muscles !!

Scapular regions :SupraspinatusInfraspinatusTeres minorTeres major SubscapularisDeltoid Pectoral regions :Pectoralis major Perctoralis minorSubclaviusSerratusantreior


What should we know about each muscle

What should we know about each muscle ?

1.Origin 2.Insertion 3.Nerve Supply 4.Action


Anatomy

LAW:When the muscle perform its action, its insertion moves towards its origin.


Anatomy

Scapular Muscles((muscles connecting scapula to humerus))


Anatomy

Revision..!

Soulder Joint

The Scapula


Anatomy

Revision..!

Proximal end of Humerus bone

Clavicle


Supraspinatus supra above spintaus spine of scapula

Supraspinatus (Supra=above .. -spintaus =spine of scapula

Origin :Supraspinousfossa of scapula

Insertion: Greater tuberosity of humerus

Nerve supply: Suprascapular nerve

:Action

(1-Initiation of abduction (0-15 degree2-stabilization of the shoulder joint


Infraspinatus infra below spinatus spine of scapula

Infraspinatus (infra=below,-spinatus= spine of scapula)

Origin: Infraspinousfossa of scapula

Insertion: Greater tuberosity of humerus

Nerve supply:Suprascapular nerve

:Action

1- Lateral rotation 2- Stabilization of shoulder joint


Teres rounded teres minor

(teres=rounded)Teres minor

Origin: Upper two thirds of lateral border of scapula

Insertion: Greater tuberosity of humerus

Nerve supply: Axillary nerve

Action:

1- Lateral rotation 2- stabilization of shoulder joint


Teres major

Teres major

Origin: Lower third of lateral border of scapula

Insertion: Medial lip of intertubercular groove of humerus

Nerve supply : Lower subscapular nerve

:Action

1-Medial rotation 2-adduction 3-stabilization of shoulder joint


Minor major

Minor & Major


Subscapularis

Subscapularis

Origin: Subscapularfossa

Insertion: Lesser tuberosity of humerus

Nerve supply: Upper and lower

subscapular nerve

:Action

1-Medial rotation 2-stabilization of shoulder joint


Rotator cuff of shoulder joint

Rotator cuff of shoulder joint..!!

4 muscles and their tendons :Supraspinatus (superior)posterior )) InfraspinatusTeres minor (posterior)(Anterior)Subscapularis Function: maintaining glenohumeral (shoulder joint) stability.Note: The cuff is deficient inferiorly, and this is a site of potential weakness.


Deltoid muscle delt triangular oid like

Deltoid muscle (delt= triangular,oid=like)

Origin: 1-anterior border & upper surface of lateral third of the clavicle 2- lateral margin of acromion 3-posteroir border of the spineInsertion: Deltoid tuberosity of humerusNerve supply: Axillary nerveAction: 1- Abduction (15-90 degrees) 2- Flexion ((Calvicular fiber)) 3- Extension((Posterior fibers))


Anatomy

Pectoral muscles


Pectoralis major pector breast

Pectoralis major (pector=Breast)

Origin: 1-medial half (sternal Half) of Clavicle 2- Anterior surface of SternumInsertion: Lateral Lip of intertubercular headNerve supply : Medial & Lateral pectoral nervesAction : 1-Adduction 2-Medial rotation


Pectoralis minor

Pectoralis minor

Beneath pectoralis majorAnterior surface & superior border of ribs III to V:OriginInsertion: coracoid process of scapulamedial pectoral nerve:Nerve supplyAction: Depression of shoulder joint


Subclavius sub under clavius clavicle

Subclavius (sub=under,clavius=clavicle)

Origin :Rib IInsertion: groove at the middle third of inferior surface of clavicleNerve Supply: nerve to subcalviusAction:1- pulls clavicle medially 2-protects underlying structures


Serratus anterior serratus saw anterior front side of body

Serratusanterior(serratus=saw,anterior=front side of body)

Origin: lateral surface of upper 9 ribsInsertion: medial border the scapulaNerve supply : long thoracic nerve Action: protraction &rotation of scapula


  • Login