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Scapular Region and Arm Flashcards

1
Q

acromion process

A
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2
Q

acromioclavicular joint

A
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3
Q

coracoid process

A
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4
Q

medial and lateral epicondyles of humerus

A
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5
Q

olecranon process

A
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6
Q

tendon of biceps brachii in the cubital fossa

A

number four is the tendon of interest

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7
Q

ulnar nerve behind medial epicondyle of humerus

A
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8
Q

brachioradialis muscle

A
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9
Q

What dermatome is responsible for the shoulder?

A

C4

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10
Q

What dermatomes is responsible for the lateral/radial side of the arm?

A

C5

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11
Q

What dermatome is responsible for the lateral side of the forearm?

A

C6

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12
Q

What dermatome is responsible for the middle three fingers?

A

C7

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13
Q

What dermatome is responsible for the medial side of the hand and forearm?

A

the C8

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14
Q

What dermatome is responsible for the medial ulnar side of the arm and forearm?

A

the T1

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15
Q

What dermatome is responsible for the ulnar side of the arm and the axillary floor?

A

T2

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16
Q

What cutaneous nerves serve the medial side of the upper limb?

A

the medial brachial nerve which is joined by the intercostalbrachial nerve as well as the medial antebrachial nerve

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17
Q

Which cutaneous nerves serve the lateral side of the upper limb?

A

the upper lateral (axillary), lower lateral (radial) and the lateral antebrachial (musculocutaneous) cutaneous nerves

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18
Q

Which cutaneous nerves serve the dorsal side of the upper limb?

A

the posterior and dorsal cutaneous nerves both of which are branches of the radial nerve

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19
Q

Where does the cephalic vein begin?

A

at the dorsum of the hand on the radial side

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20
Q

Where does the cephalic vein end?

A

drains into the axillary vein after piercing the clvipectoral fascia

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21
Q

Where does the basilic vein begin?

A

medial ulnar side of the dorsum of the hand

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22
Q

Where does the basilic vein end?

A

joins the brachial vein above the elbow to become axillary vein

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23
Q

What vein in front of the elbow joins the basilic and cephalic veins?

A

the median cubital vein

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24
Q

What important articulating structure is found at the lateral border of the scapula?

A

the glenoid fossa

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25
What are the three fossas of the scapula? What are they filed with?
supraspinous, infraspinous, subscapular; muscles of the same name
26
What two important structures are found on the superior portion of the scapula?
coracoid process and scapular notch
27
what are the parts of the humerus?
1. head 2. greater and lesser tubercles; intertubercular sulcus 3. anatomical neck versus surgical neck 4. shaft (diaphysis) 5. deltoid tuberosity 6. radial sulcus 7. lateral and medial epicondyles;
28
What are the lines of the lateral and medial epicondyles?
a. radial, coronoid, and olecranon fossae b. capitulum c. trochlea
29
What three structures are at the proximal end of the radius?
head neck and radial tuberosity
30
What four structures are on the promixal end of the ulna?
1. olecranon process 2. trochlear notch 3. coronoid process 4. ulnar tuberosity
31
What fascia invests the structures of the arm?
deep fascia
32
What deep fascia covers the structures of the arm?
the brachial fascia
33
What separates the arm into anterior and posterior components?
lateral and medial intermuscular septa
34
What muscles insert on the humerus?
pectoralis major, deltoid, latissimus dorsi, teres major, muscles of rotator cuff
35
Give the origin, insertion, action, and innervation for the pec major
pectoralis major muscle - see page HA-4-3 (Plates 168, 411; 6.14, 6.16, 6.18 - 6.20) a. origin - medial part of clavicle, sternum, costal cartilages of ribs and upper rectus sheath b. inserts - crest of greater tubercle c. adducts and medially rotates the arm d. innervated by medial and lateral pectoral nerves
36
Give the orgin, insertion, action, and innervation of the deltoid muscle.
a. origin - lateral 1/3 of clavicle, lateral acromion and crest spine of the scapula b. inserts - on deltoid tuberosity c. abducts the arm d. innervated by axillary nerve
37
Give the origin, insertion, action, and innervation of the latissimus dorsi muscle
a. origin - spinous processes of lower thoracic vertebrae, spinous processes of lumbar vertebrae, dorsum of sacrum, iliac crest and lower ribs b. inserts - on crest of lesser tubercle and intertubercular sulcus c. extends, adducts and medially rotates the arm d. innervated by thoracodorsal nerve (also called middle subscapular nerve)
38
Give the origin, insertion, action, and innervation for the teres major muscle.
a. origin - inferior angle and axillary border of scapula b. inserts - crest of lesser tubercle c. adducts and medially rotates arm d. innervated by lower subscapular nerve
39
What are the muscles of the rotator cuff?
supraspinatus, infraspinatus, subscapularis, teres minor
40
what is the origin, insertion, action, and innervation of the supraspinatus muscle?
a. origin - supraspinatus fossa of scapula b. inserts - on greater tubercle c. abducts the arm and assists deltoid muscle in its full movement d. innervated by suprascapular nerve
41
What is the origin, insertion, action and innervation of the infraspinatus muscle?
a. origin - lateral border of scapula, infraspinous fossa b inserts on greater tubercle c. laterally rotates the arm d. innervated by supraspinatous nerve
42
What is the origin insertion, action, and innervation for the teres minor muscle?
a. origin - lateral border of scapula b inserts on greater tubercle c. laterally rotates the arm d. innervated by axillary nerve
43
What is the origin insertion action and innervation of the subscapularis muscle?
a. origin - costal surface of scapula b. inserts - on lesser tubercle c. medially rotates the arm d. innervated by upper and lower subscapular nerves
44
What spaces are formed by the muscle of the shoulder?
quadrangular space, triangular space, triangular interval
45
what forms the quadrangular space?
(1) humerus (2) teres major muscle (3) teres minor muscle (4) long head of the triceps muscle (5) posterior humeral circumflex vessels and axillary nerve pass through space
46
What forms the triangular space?
(1) teres minor muscle (2) teres major muscle (3) long head of triceps muscle (4) branches of the scapular circumflex vessels can be seen through this space
47
What forms the triangular interval?
(1) long head of triceps muscle (2) lateral head of triceps muscle (3) teres major muscle (4) radial nerve and deep brachial vessels seen thru interval
48
What ar the anterior muscles of the arm innervated by the musculocutaneous nerve\>
coracobrachialis muscle, biceps brachii muscle, brachialis muscle
49
What is the origin, insertion, and action of the coracobrachialis?
a. origin - from coracoid process b. inserts - half-way down medial aspect of humerus c. adducts arm
50
What is the origin, insertion, and action of the biceps brachi?
a. origin - from supraglenoid tubercle (long head) and coracoid process (short head) b. inserts - on radial tuberosity c. flexes shoulder, flexes forearm at elbow and supinates forearm
51
What is the origin, insertion, and action of the brachialis muscle?
a. origin - from lower anterior half of humerus b. inserts - on ulnar tuberosity c. flexes forearm at elbow d. forms the floor of cubital fossa
52
What posterior muscle of the arm is innervated by the radial nerve?
triceps brachii
53
What is the origin, insertion, and action of the triceps brachii?
a. origin - from infraglenoid tubercle of scapula and upper and lower halves of humerus b. inserts - on olecranon process c. extends forearm at elbow, extends shoulder d. innervated by radial nerve
54
What muscles form the border of the cubita fossa?
brachioradialis muscle, pronator teres muscle
55
what is the orgin, insertion, action, and innervation of the brachioradialis?
a. origin from the lateral supracondylar line of humerus b. inserts near styloid process of radius c. flexes forearm at elbow d. innervated by radial nerve e. because of its origin and nerve supply, it is studied with the extensor group of muscles (HA-15)
56
What is the origin, insertion, action, and innervation of the pronator teres?
a. origin - superficial head from medial epicondyle of humerus: deep head from medial side of coronoid process of ulna b. inserts - midpoint of radial shaft c. pronates forearm d. innervated by the median nerve, which typically passes between two heads of origin
57
What main artery feeds the arm?
brachial
58
What are the branches of the brachial artery?
profunda brachii artery, superior ulnar collateral artery,inferior ulnar collateral artery
59
What deep veins serve the arm?
brachial and axillary
60
What are the two branches of the brachial veins?
lateral and medial
61

Anatomy (16 decks)

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