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Anatomy > Anatomy Exam 1 > Flashcards

Anatomy Exam 1 Flashcards

1
Q

What is the action of the superficial layer of muscles?

A

Move/stabilize brachium

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2
Q

What is the the superficial layer of muscles innervated by?

A

Branches of VPRs and CN XI

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3
Q

What is the deep layer of muscles innervated by and what is the action?

A

Action: Move/Stablize trunk
Innervation:DPR’s

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3
Q

What is the intermediate layer of muscles innervated by and what is the action?

A

Action is to move/stablize ribs

Innervated by branches of VPR

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4
Q

What is origin of trapezius

A

Ext. occipital protuberance, spinous processes (C7-T12), nuchal ligament

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5
Q

What is insertion of trapezius

A

Lateral 1/3 clavicle, medial acromion and spine of scapula

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6
Q

What is action of trapezius

A

Elevate, adduct (retract), depress scapula, elevate clavicle, rotate scapula

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7
Q

What is innervation of trapezius

A
  • CN XI (accessory n.)
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7
Q

What is origin of latissimus dorsi muscle?

A

Spinous processes (T7-L5), thoracolumbar fascia, iliac crest of pelvis

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8
Q

What is insertion of latissimus dorsi muscle?

A
  • Intertubercular (bicipital) groove humerus
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9
Q

What is Action of latissimus doors muscle?

A
  • Extend, adduct, medially rotate humerus
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10
Q

What is innervation of latissimus doors muscle?

A
  • Thoracodorsal n.
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11
Q

What is origin of levator scapulae?

A
  • Transverse processes (C1-4)
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12
Q

What is insertion of levator scapulae?

A
  • Upper medial scapular border
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13
Q

What is innervation of levator scapulae?

A
  • Dorsal scapular n.
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14
Q

What is action of levator scapulae?

A
  • Elevate (rotate) scapula
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14
Q

What is action of Rhomboid major & minor muscles?

A
  • Adduct, elevate (rotate) scapula
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15
Q

What is origin of Rhomboid major & minor muscles?

A
  • Spinous processes
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16
Q

What is insertion of Rhomboid major & minor muscles?

A
  • Medial scapular border
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17
Q

What is innervation of Rhomboid major & minor muscles?

A
  • Dorsal scapular n.
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18
Q

What is the origin of Serratus posterior superior & serratus posterior inferior muscles?

A
  • Lateral spinous processes
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19
Q

What is the insertion of Serratus posterior superior & serratus posterior inferior muscles?

A
  • Ribs
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20
Q

What is the action of Serratus posterior superior & serratus posterior inferior muscles?

A
  • Assist with respiration
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21
Q

What is the innervation of Serratus posterior superior & serratus posterior inferior muscles?

A
  • Intercostal nn. from VPR’s
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22
Q

What muscles are apart of the group spinotransversales mm?

What are they innervated by?

A
  • Splenius capitis m.
  • Splenius cervicis m.

Innervated by DPRs

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23
Q

What muscles are apart of the group Erector spinae mm?

What are they innervated by?

A
  • Iliocostales mm.
  • Longissimus mm.
  • Spinalis mm.

Innervated by DPRs

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24
Q

What muscles are apart of the group Transversospinales mm?

What are they innervated by?

A
  • Semispinales mm.
  • Multifidi mm.
  • Rotators mm.

Innervated by DPRs

25
Q

What is the Insertion of the Deltoid?

A

Insertion: Deltoid tuberosity of humerus

26
Q

What is the Origin of the Deltoid?

A

Origin: Clavicle, acromion, spine of scapula

27
Q

What is the Innervation of the Deltoid?

A

Innervation: Axillary nerve

28
Q

What is the Innervation of the supraspinatus?

A

Innervation: Suprascapular nerve

28
Q

What is the Action of the supraspinatus?

A

Action: Stabilizes shoulder joint; abducts humerus

28
Q

What is the Action of the Deltoid?

A

Action: Flexes and medially rotate humerus (ant. portion); abducts humerus (intermediate portion); extends and laterally rotates humerus (posterior portion)

29
Q

What is the origin of the supraspinatus?

A

Origin: Supraspinous fossa of scapula

29
Q

What is the Insertion of the supraspinatus?

A

Insertion: Greater tubercle of humerus

30
Q

What is the origin of infraspinatus?

A

Origin: Infraspinous fossa of scapula

31
Q

What is the origin of the teres minor?

A

Origin: Lateral (axillary) border of scapula

31
Q

What is the action of infraspinatus?

A

Action: Stabilizes shoulder joint; laterally rotates humerus at shoulder

31
Q

What is the innervation of infraspinatus?

A

Innervation: Suprascapular nerve

31
Q

What is the insertion of infraspinatus?

A

Insertion: Greater tubercle of humerus

32
Q

What is the insertion of the teres minor?

A
  1. Insertion: Greater tubercle of humerus
32
Q

What is the innervation of the teres minor?

A
  1. Innervation: Axillary nerve
32
Q

What is the action of the teres minor?

A
  1. Action: Stabilizes shoulder joint; laterally rotates humerus at shoulder
33
Q

What is the origin of teres major?

A
  1. Origin: Dorsal surface of lateral border of scapula, close to inferior angle
34
Q

What is the insertion of teres major?

A
  1. Insertion: Medial lip of intertubercular sulcus
35
Q

What is the innervation of teres major?

A
  1. Innervation: Lower subscapular nerve
36
Q

What is the action of teres major?

A
  1. Action: Adducts and medially rotates humerus at shoulder
37
Q

What is the origin of the long head triceps brachii?

A
  1. Origin: Infraglenoid tubercle of scapula
38
Q

What is the insertion of the long head triceps brachii?

A
  1. Insertion: Olecranon process of ulna
39
Q

What is the innervation of the long head triceps brachii?

A
  1. Innervation: Radial nerve
40
Q

What is the action of the long head triceps brachii?

A
  1. Action: Extends and adducts humerus at shoulder; with other two heads, will extend forearm at elbow
41
Q

What is the origin of the subscapularis?

A

Origin: Subscapular fossa (ventral surface of scapula)

42
Q

What is the insertion of the subscapularis?

A

Insertion: Lesser tubercle of humerus

43
Q

What is the innervation of the subscapularis?

A

Innervation: Upper and lower subscapular nerves

44
Q

What is the action of the subscapularis?

A

Action: Stabilizes shoulder joint; medially rotates and adducts humerus at the shoulder

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Anatomy (7 decks)

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