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IPAP A&P 1 Upper Limbs > 51X-Upper Limbs > Flashcards

51X-Upper Limbs Flashcards

1
Q

what muscles are considered the Scapulohumeral muscles & what do they surround?

A 
Deltoid 	
Supraspinatus
Infraspinatus
Teres Minor
Teres Major
Subscapularis

surround the pectoral girdle

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2
Q

What is the Origin / insertion / Innervation of the Deltoid?

A

O: Acromial extremity of clavicle, acromion & spine of scapula
Insert: Deltoid tuberosity of humerus
Inner: axillary nerve

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3
Q

What are the actions of the deltoid

A

entire muscle abducts arm @ shoulder

anterior fibers flex & medially rotatearm

Posterior fibers extend & laterally rotate

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4
Q

Describe the deltoid muscle and how it abducts

A

is a multipennate muscle. anterior / posterior muscle serve as fixators and the medial muscle acts as prime mover

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5
Q

What scapulohumeral muscles insert at the greater tubercle of the humerus

A

Supraspinatus
Infraspinatus
Teres Minor

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6
Q

What is the Origin/ Insertion / innervation of Supraspinatus muscle

A

O: Supraspinatus fossa of scapula
Inser: greater tubercle of humerus
Inner: Suprascapular nerve

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7
Q

Action of the Spraspinatus muscle?

A

assists deltoid w/ initial stage of abducting arm @ shoulder & continues act throughout abduction

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8
Q

The origin / insertion/ innervation of Infraspinatus muscle

A

O: infrasinpatus fossa of scapula
Insert: Greater tubercle of humerus
Inner: suprascapular nerve

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9
Q

Infraspinatus muscle action

A

laterally rotates arm @ shoulder

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10
Q

Teres minor Origin / insertion / Innervation

A

O: middle lateral border of scapula
Insert: greater tubercle of humerus
Inner: suprascapular nerve

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11
Q

Action of Teres minor

A

Laterally rotates & adducts arm @ shoulder joint

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12
Q

what is the origin / insertion / innervation of Teres Major

A

O: Inferior lateral border (angle) of scapula
Insert: Intertubercular sulcus of humerus
Inner: lower subscapular nerve

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13
Q

actions of Teres Major

A

adducts, medially rotates, & extends arm (dorsally) @ shoulder joint

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14
Q

what is the origin / insertion / innervation of Subscapularis

A

O: subscapular fossa of scapula
Insert: Lesser Tubercle of humerus
Inner: Upper / lower subscapular nerve

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15
Q

action of subscapularis

A

medially rotate arm @ shoulder

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16
Q

What muscles make up the Rotator Cuff

A

Supraspinatus
Infraspinatus
Subscapularis
Teres Minor

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17
Q

The Rotator Cuff muscles all originate from where & form what?

A

0: from scapula;

form a single tendon unit as they combine to form a “cuff” over head of humerus

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18
Q

Which Rotator Cuff muscle does not rotate The humerus

A

Supraspinatus

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19
Q

What ligament forms an arch that prevent the superior displacement of humeral head from the glenoid cavity of scapula?

A

Coracoacromial ligament;

Spans between acromion & Coracoid process forming the coracoaromial arch

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20
Q

What is the purpose of the Axilla & Where is it located?

A

Provides passageway for vessels & Nerves to reach upper limb

Pyramidal space inferior to glenehmmeral joint & Superior to axillary fascia @ junction of arm & thorax

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21
Q

This portion of the Axilla is between the 1st rib, clavicle & superior edge of subscapularis

A

Apex

22
Q

This portion of the Axilla is for med by the Concave skin, subcutaneous tissne, & axillary fascia extending from the arm to thoracic wall?

A

Base

23
Q

Axillary wall formed by scapula & subscapularis muscle, teres major, & latissimus dorsi

A

Posterior wall

24
Q

This Axillary wall is formed by pectoral’s major & minor, & pectoral & clavicopectoral fascia

A

Anterior Wall

25
Q

This Axillary wall is formed by the 1st to 4th ribs & associated intercostal muscles & overlying serratus anterior

A

Medial wall

26
Q

This Axillary wall is a narrow bony Wall formed by the intertubercular grove in humerus

A

Lateral wall

27
Q

Where does the axillary artery begin & end?

A

begins @ lateral border of 1st rib

ends @ inferior border of teres major (becomes brachial artery)

28
Q

What branches of each of the 3 sections of the axillary artery?

A

1: Superior thoracic artery
2: Thoracoacromial artery, lateral thoracic artery
3: anterior circumflex, posterior circumflex humeral artery, subscapular artery

29
Q

What nerve wraps around the surgical neck of the humerus?

A

Axillary nerve

30
Q

What nerve wraps around the shaft of the humerus?

A

Radial nerve

31
Q

What is the Quadrangular space?

A

4-sided space associates w/posterior axilla that the axillary nerve, posterior circumflex humeral artery / vein pass through

32
Q

What is the superior border of the quadrangular space?

A

Inferior border of teres minor

33
Q

What is the inferior border of the quadrangular space?

A

Superior border of teres major

34
Q

What is the medial border of the quadrangular space?

A

Long head of triceps

35
Q

What is the lateral border of the quadrangular space?

A

Surgical neck of humerus

36
Q

What muscles make up the anterior compartment of the arm?

A

Biceps brachii
Brachialis
coracobrachialis

37
Q

What muscles compose the posterior compartment of the arm?

A

Triceps Brachii

Anconeus

38
Q

the musculocutaneous nerve innervates which compartment of the arm?

A

Anterior

39
Q

The Biceps Brachii has a long & short head what are their origins & insertions?

A

LH: supraglenoid tubercle of scapula
SH: coracoid process of scapula

Insertion: (Both) tuberosity of radius & bicipital aponeurosis

40
Q

What is the action of the Biceps Brachii?

A

Flex forearm @ elbow
supinates forearm @ radioulnnar joint
Flex arm @ shoulder

41
Q

What is the origin / insertion / action of Brachialis?

A

O: Humerus
Insert: Ulnar tuberosity & coronoid process of ulna
Act: Flex forearm @ elbow (major flexor of elbow)

42
Q

where does the brachialis muscle lie?

A

under the biceps brachii

43
Q

What is the major flexor of the forearm regardless of pronation or supination?

A

Brachialis

44
Q

What is the origin / insertion / action of the Coracobrachialis?

A

O: coracoid process of scapula
Insert: shaft of humerus
Act: flex & adduct arm @ shoulder joint

45
Q

What nerve are the muscle of the posterior arm compartment innervated from?

A

radial nerve

46
Q

What is the origin of the long head of the triceps brachii?

A

infraglenoid tubercle of scapula

47
Q

Which 2 heads of the triceps brachii originate on the humerus?

A

Lateral & medial

LH: lateral & posterior superior to radial groove
MH: posterior surface inferior to radial groove

48
Q

Wha tis the insertion site & action of the triceps brachii

A

Insert: Olecranon of ulna
Act: extends forearm @ elbow
extends arm @ shoulder

49
Q

What muscle of the posterior arm compartment has an insertion site @ the lateral epicondyle of the humerus?

A

Anconeus

50
Q

Where does the Anconeus insert & what is its action?

A

Insert: olecranon of ulna
Act: extends forearm @ elbow & stabilizes elbow joint

IPAP A&P 1 Upper Limbs (5 decks)

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