Ch 9- bony landmarks and muscles of shoulder girdle Flashcards by Cynthia Schmidt

Q

what muscle is highlighted and what is the line of pull?

A

serratus anterior; horizontal pull outward

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Q

what bony landmark is highlighted?

A

acromion process: broad, flat area of superior lateral aspect, providing attachment for the upper trapezius muscle

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Q

what bony landmark is highlighted?

A

manubrium: the superior end, providing attachment for the clavicle and first rib

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Q

what is the green portion highlighted?

A

costoclavicular ligament: short, flat, rhomboid-shaped that connects the clavicle’s inferior surface to the superior surface of the costal cartilage of the first rib; limits clavicular elevation

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Q

what bony landmark is highlighted?

A

coracoid process: projection on anterior surface, providing attachment for the pectoralis minor muscle

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Q

What muscle is highlighted and what is the line of pull?

A

pectoralis minor; downward, vertical line of pull

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Q

what bony landmark is highlighted?

A

body of clavicle: area between the two ends

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Q

what is the letter B representing?

A

acromioclavicular ligament: supports the joint by holding the acromion process to clavicle to help prevent dislocation; superior and inferior

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Q

what bony landmark is highlighted?

A

acromial end: attaches laterally to scapula and provides attachment for the upper trapezius muscle

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Q

what bony landmark is highlighted?

A

body: middle 2/3rds of the sternum, providing attachment for remaining ribs

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Q

What bony landmark is highlighted?

A

glenoid fossa: slightly concave surface that articulates with humerus on superior lateral side above the axillary border and below the acromion process; positioned in an anterior, lateral, and upward direction

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Q

what bony landmark is highlighted?

A

sternal end of clavicle: attaches medially to sternum

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Q

what bony landmark is highlighted

A

axillary border: lateral side between glenoid fossa and inferior angle

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Q

what bony landmark is highlighted?

A

superior angle: superior medial aspect, providing attachement for levator scapula muscle

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Q

what bony landmark is highlighted?

A

xiphoid process: “sword shaped”; inferior tip

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Q

what bony landmark is highlighted?

Study These Flashcards

A

inferior angle: most inferior point and where vertebral and axillary border meet; determines scapular rotation

Q

What is the muscle highlighted?

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A

yellow: upper trapezius
blue: middle trapezius
red: lower trapezius

Q

name the scapular motions

Study These Flashcards

A

elevation
depression
retraction (adduction)
protraction (abduction)
downward rotation
upward rotation

Q

What is the yellow portion highlighted?

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A

interclavicular ligament: located on top of manubrium, connecting the superior sternal ends of clavicle and limit clavicular depression

Q

What’s the muscle and line of pull?

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A

levator scapula; vertical line of pull

Q

What bony landmark is highlighted?

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A

spine: projection on posterior surface, runing from medial border laterally to the acromion process; provides attachment for middle and lower trapezius muscles

Q

what joint is shown?

Study These Flashcards

A

acromioclavicular joint

Q

what ligament is highlighted?

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A

coracoacromial ligament: accessory ligament forming a roof over the head of humerus and serves as protective arch, providing support to head when an upward force is transmitted along the humerus; attaches laterally on the superior surface of the coracoid process and runs up and out to the inferior surface of the acromion process

Q

what bony landmark is highlighted?

Study These Flashcards

A

vertebral border: between the superior and inferior angle medially, and attachment of the rhomboid and serratus anterior muscles

What is A and C representing?

Coracoclavicular ligament: A(conoid) and C(trapezoid); accessory ligament providing stability to joint and allows scapula to be suspended from clavicle; connects the scapula to the clavicle by attaching to inferior surface of clavicle's lateral end and to superior surface of scapula's coracoid process

What muscle is shown and what line of pull?

rhomboid muscle; horizontal line of pull outward

what is the red portion highlighted?

sternoclavicular ligament: connects the clavicle to sternum on both anterior and posterior surface; anterior limits posterior motion and posterior limits anterior motion

what joint is shown?

sternoclavicularjoint: articulation between the manubrium of the sternum and the medial (sternal) end of clavicle