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Anatomy Exam 1 Flashcards

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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
What muscles are apart of the group spinotransversales mm? What are they innervated by?
* Splenius capitis m. * Splenius cervicis m. Innervated by DPRs
23
What muscles are apart of the group Erector spinae mm? What are they innervated by?
* Iliocostales mm. * Longissimus mm. * Spinalis mm. Innervated by DPRs
24
What muscles are apart of the group Transversospinales mm? What are they innervated by?
* Semispinales mm. * Multifidi mm. * Rotators mm. Innervated by DPRs
25
What is the Insertion of the Deltoid?
Insertion: Deltoid tuberosity of humerus
26
What is the Origin of the Deltoid?
Origin: Clavicle, acromion, spine of scapula
27
What is the Innervation of the Deltoid?
Innervation: Axillary nerve
28
What is the Innervation of the supraspinatus?
Innervation: Suprascapular nerve
28
What is the Action of the supraspinatus?
Action: Stabilizes shoulder joint; abducts humerus
28
What is the Action of the Deltoid?
Action: Flexes and medially rotate humerus (ant. portion); abducts humerus (intermediate portion); extends and laterally rotates humerus (posterior portion)
29
What is the origin of the supraspinatus?
Origin: Supraspinous fossa of scapula
29
What is the Insertion of the supraspinatus?
Insertion: Greater tubercle of humerus
30
What is the origin of infraspinatus?
Origin: Infraspinous fossa of scapula
31
What is the origin of the teres minor?
Origin: Lateral (axillary) border of scapula
31
What is the action of infraspinatus?
Action: Stabilizes shoulder joint; laterally rotates humerus at shoulder
31
What is the innervation of infraspinatus?
Innervation: Suprascapular nerve
31
What is the insertion of infraspinatus?
Insertion: Greater tubercle of humerus
32
What is the insertion of the teres minor?
2. Insertion: Greater tubercle of humerus
32
What is the innervation of the teres minor?
3. Innervation: Axillary nerve
32
What is the action of the teres minor?
4. Action: Stabilizes shoulder joint; laterally rotates humerus at shoulder
33
What is the origin of teres major?
1. Origin: Dorsal surface of lateral border of scapula, close to inferior angle
34
What is the insertion of teres major?
2. Insertion: Medial lip of intertubercular sulcus
35
What is the innervation of teres major?
3. Innervation: Lower subscapular nerve
36
What is the action of teres major?
4. Action: Adducts and medially rotates humerus at shoulder
37
What is the origin of the long head triceps brachii?
1. Origin: Infraglenoid tubercle of scapula
38
What is the insertion of the long head triceps brachii?
2. Insertion: Olecranon process of ulna
39
What is the innervation of the long head triceps brachii?
3. Innervation: Radial nerve
40
What is the action of the long head triceps brachii?
4. Action: Extends and adducts humerus at shoulder; with other two heads, will extend forearm at elbow
41
What is the origin of the subscapularis?
Origin: Subscapular fossa (ventral surface of scapula)
42
What is the insertion of the subscapularis?
Insertion: Lesser tubercle of humerus
43
What is the innervation of the subscapularis?
Innervation: Upper and lower subscapular nerves
44
What is the action of the subscapularis?
Action: Stabilizes shoulder joint; medially rotates and adducts humerus at the shoulder
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Anatomy (7 decks)

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