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MSK > Structure and Functional Organization of the Upper Extremity MSK system > Flashcards

Structure and Functional Organization of the Upper Extremity MSK system Flashcards

1
Q

What are the regions of the vertebral column?

A

cervical
thoracic
lumbar
coccyx

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2
Q

number of vertebrae in each region of the vertebral column

A

Cervical-7
Thoracic-12
Lumbar-5
Coccyx-4

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3
Q

Which vertebrae are lordotic?

A

cervical and lumbar

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4
Q

Which vertebrae are Kyphotic?

A

Thoracic and sacral

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5
Q

which vertebrae have facets for rib articulation?

A

Thoracic

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6
Q

What are the largest and strongest vertebrae?

A

the lumbar

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7
Q

What is the foundation for the pelvic girdle and contains foramina for nerves and blood vessels?

A

Sacrum

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8
Q

what has four vertebrae fused into one?

A

coccyx

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9
Q

What are the bones of the thorax?

A

Sternum
a. Manubrium
b. Body
c. Xyphoid process

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10
Q

Which ribs are true ribs?

A

R1-R7 are true ribs

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11
Q

Which ribs are false ribs?

A

R8-R10 are false ribs

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12
Q

Which ribs are floating ribs?

A

R11-R12 are floating ribs

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13
Q

Bones of the pectoral/shoulder girdle

A

Clavicle, Scapula

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14
Q

What is the “strut” between the scapula and sternum, articulates with the acromion laterally, and the sternum medially?

A

clavicle

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15
Q

What are the parts of the scapula?

A

Spine, body (vertebral border, axillary border), acromion (extends over humeral head), and the coracoid (attachment site)

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16
Q

What are the ligaments of the shoulder/pectoral girdle?

A

acromioclavicular ligament
coracoclavicular ligament
coracoacromial ligament

17
Q

What is the ring called that deepens the glenoid cavity and provides stability?

A

labrum

18
Q

What percentage of the humeral head makes contact with the glenoid cavity?

A

25%

19
Q

What are the SITS muscles?

A

Supraspinatus, infraspinatus, teres minor, subscapularis

20
Q

What is the action of the supraspinatus?

A

assists deltoid in abduction of the humerous at the shoulder

21
Q

what is the action of the infraspinatus?

A

external rotation of the shoulder joint

22
Q

What is the action of the teres minor

A

extends arm at shoulder, rotation externally

23
Q

What is the action of the subscapularis?

A

internal rotation of the arm at the shoulder

24
Q

What are the bones of the elbow?

A

Humerus
Radius
Ulna

25
Q

What is the action of the biceps brachii?

A

flexes arm at shoulder
flexes and supinates forearm at elbow

26
Q

What is the action of the brachialis?

A

flexes forearm at the elbow

27
Q

what is the action of the brachioradialis?

A

flexes forearm at the elbow joint

28
Q

what is the action of the triceps brachii

A

extends forearm at the elbow joint
extends arm at the shoulder

29
Q

What is the action of the supinator?

A

supinates forearm

30
Q

what is the action of the pronator teres

A

pronates forearm

MSK (4 decks)

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