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The Upper Limb
Based on lecture 2 of applied anatomy for medical students at ECU
51
Anatomy
Not Applicable
03/19/2017

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Cards

Term
What type of bone is the scapula?
Definition
A flat bone
Term
What type of bone is the clavicle?
Definition
A long bone
Term
Why is the medial end of the clavicle more rounded?
Definition
For articulation with manubrium of sternaum
Term
Why is the lower surface of the clavicle more roughened?
Definition
Due to ligament attachments
Term
What are the functions of the clavicle?
Definition
acts as a prop-rigid strut between scapula & arm
enables limb to swing clear of trunk
Term
The head of the humerus articulates with...?
Definition
The glenoid scapula
Term
What is the radius and ulna connected by medially?
Definition
Interosseous membrane
Term
How many bones are in the wrist and hand?
Definition
27
Term
Trapezius origins?
Definition
nuchal lines, ligamentum nuchae, cervical & upper 6 thoracic spines
Term
Trapezius insertions?
Definition
lateral end of the clavicle, the acromion process & spine of scapula
Term
Trapezius actions?
Definition
elevate, retract, depress or roatate scapula upward.
Elevate clavicle.
Extend neck
Term
Latissimus dorsi origins?
Definition
T6-12 spines; lower 3-4 ribs, iliac crest, thoracolumbar fascia (to lumbar & sacral spines), inferior angle scapula
Term
Latissimus dorsi insertion?
Definition
Intertubercular groove of the humerus
Term
Latissimus dorsi actions?
Definition
Extension, adduction, and medial rotation at shoulder
Term
Levator scapulae origins?
Definition
Transverse processes of C1-C4
Term
Levator scapulae insertion?
Definition
vertebral border of the scapula near the superior angle
Term
Levator scapulae actions?
Definition
Elevates the scapula
Term
Rhomboid minor origins?
Definition
Spinous processes of C7, T1, T2
Term
Rhomboid minor insertion?
Definition
Medial border of scapula
Term
Rhomboid minor actions?
Definition
Elevation and retraction of the scapula
Term
Rhombaoid major origins?
Definition
Spinous processes of T2-T5
Term
Rhomboid major insertion?
Definition
medial border of scapula
Term
Rhomboid major actions?
Definition
Retraction and elevation of scapula
Term
Pectoralis major origins?
Definition
Sternum, upper ribs & clavicle to humerus
Term
Pectoralis major insertion?
Definition
Crest of greater tunercle and lateral ip of intertubercular groove of humerus
Term
Pectoralis major actions?
Definition
Flexion, adduction, and medial roatation at shoulder
Term
Pectoralis minor origins?
Definition
Ribs 3-5
Term
Pectoralis minor insertion?
Definition
coracoid process of scapula
Term
Pectoralis minor actions?
Definition
Depresses shoulder
Is also an accessory muscle of respiration
Term
Serratus anterior origins?
Definition
Upper 8 ribs
Term
Serratus anterior insertion?
Definition
Medial border of scapula
Term
Serratus anterior actions?
Definition
Protraction & rotation of scapula
Term
Deltoid origins (3 fibres)?
Definition
anterior fibres: anterior border & upper surface of the clavicle
middle fibres: lateral aspect of the acromion process
posterior fibres: lower lip & posterior border of spine of scapula
Term
Deltoid insertion?
Definition
Deltoid tuberosity (humerus)
Term
Deltoid actions?
Definition
Abduction at shoulder, flexion of arm, abduction of arm, extension of flexed arm
Term
4 muscles of the rotator cuff?
Definition
1. Supraspinatus
2. Infraspinatus
3. Teres minor
4. Subscapularis
Term
Supraspinatus origins?
Definition
Supraspinatus fossa
Term
Supraspinatus insertion?
Definition
greater tubercle of humerus
Term
Supraspinatus action?
Definition
Abduction of humerus
Term
Infraspinatus origins?
Definition
Infraspinous fossa
Term
Infraspinatus insertion?
Definition
Greater tubercle of humerus
Term
Infraspinatus action?
Definition
Lateral rotation of humerus
Term
Teres minor origins?
Definition
Lateral border of scapula
Term
Teres minor insertion?
Definition
Greater tubercle of humerus
Term
Teres minor actions?
Definition
lateral rotation of humerus
Term
Subscapularis origins?
Definition
Costal surfac of scapula
Term
Subscapularis insertion?
Definition
Lesser tubercle of humerus
Term
Subscapularis actions?
Definition
Medial rotation of humerus
Term
Teres major origins?
Definition
Inferior angle of of scapula
Term
Teres major insertion?
Definition
medial lip of intertubercular sulcus
Term
Teres major action?
Definition
medial rotation of humerus
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