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STEP1 > Musculo-Ske > Flashcards

Musculo-Ske Flashcards

1
Q

Inability to abduct the arm 90°

deltoid muscle

A

Axillary Nerve

C5-C6

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2
Q

Inability to supinate the forearm

Weak flexion of the forearm

A

Musculocutaneous Nerve

C5-c6

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3
Q

Inability to oppose the thumb
Ape hand deformity
Loss of wrist flexion

A

Medial Nerve

c5-t1

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4
Q

Innervation

  • Deltoid muscle
  • Teres minor muscle
A

Axillary Nerve

C5-C6

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5
Q

Inability to extend the wrist

Wrist drop

A

Radial Nerve

c5-T1

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6
Q

Claw hand deformity

A

Ulnar Nerve

C8-T1

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7
Q

Inervacion Sensitiva de la enminencia thenar

A

Medial Nerve

c5-t1

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8
Q

Inervacion Sensitiva de la enminencia hipo thenar

A

Ulnar Nerve

C8-T1

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9
Q

decresed biceps deep tendon reflex, inability to flex and supinate the forearm, and loss of sensation over the lateral forearm

A

musculocutaneous nerve (C5-C7)

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10
Q

inability to flex the wrist,loss of sensation first three digits and half of the fourth digit.

A

Medial Nerve

c5-t1

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11
Q

innervates the supraspinatus muscle

-the first 15° of abduction of the arm.

A

suprascapular nerve

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12
Q

Feared complications of scaphoid bone fractures

A
  • Avascular necrosis
  • Nonunion of the scaphoid
  • degenerative arthritis.
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13
Q

injury should be suspected when anatomic snuffbox tenderness is present.
- fall on an outstretched hand

A

scaphoid bone fractures

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14
Q

area bordered by the extensor pollicis longus, the extensor pollicis brevis, and the radial styloid.

A

anatomic snuffbox

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15
Q

largest bone in the proximal carpal row

A

scaphoid bone

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16
Q

Vascular watershed (scaphoid bone)

A

-Poor fracture healing environment
-High risk for malunion with appropriate intervention
(Blood supply:Dorsal carpal branch)

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17
Q

Pain with axial load through thumb

A

Scaphoid compression test

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18
Q

Patients with the I-pattern of blood supply in the lunate ->

A

are at the highest risk for AVN

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19
Q

crescent-shaped carpal bone in the proximal carpal row

A

Lunate bone

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20
Q 
Preiser disease (no por trauma)
*vascular or endocrine diseases most frequently
A

AVN of the scaphoid

**showing sclerosis and fragmentation of the proximal pole of the scaphoid

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21
Q

Ulnar claw

A

impaired extension of the fourth and fifth fingers

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22
Q

injury to the distal ulnar nerve

A

impaired extension of the fourth and fifth fingers -> Ulnar claw

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23
Q

injury to the distal ulnar nerve, which often occurs due to

A

fracture of the hook of the hamate

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24
Q

ulnar nerve comprises ______ nerve fibers

A

C8-T1

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25
Q

Injury to the proximal ulnar nerve due to->

A

Fracture of the medial epicondyle of the humerus (proximal injury)

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26
Q

the patient is able to make a fist (flex her fourth and fifth fingers) but is unable to extend them

A

The lesion in medial epicondyle of the humerus (proximal injury)

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27
Q

Loss of wrist extension (wrist drop)

A

midshaft fracture of the humerus

radial nerve injury

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28
Q

radial nerve injury

A

Loss of wrist extension (wrist drop)

29
Q

Fracture of the supracondylar humerus

A

proximal median nerve injury

30
Q

Fracture of the surgical neck of the humerus

A

damage to the axillary nerve

31
Q

impaired abduction of the arm from 15°-100°

+ decreased sensation over the deltoid, and deltoid atrophy

A

damage to the axillary nerve

-fractura del cuello qx del humero

32
Q

Pope’s blessing->

A

Inability to flex the first, second, and third fingers

Proximal Injury-Median Nerve

33
Q

Supracondylar fracture of the humerus lesion

A

Proximal Injury-Median Nerve

34
Q

Median claw->

A

Inability to extend the second and third fingers

35
Q

Mechanism(s) Distal Injury - Median Nerve

A
  • Wrist laceration

- Carpal tunnel syndrome

36
Q

inability to adduct and abduct his fingers associated with loss of sensation in the little finger has an ulnar nerve injury

A

Ulnar Nerve
(C8-T1)
-medial epicondyle

37
Q

Other causes of radial nerve injury include

A

compression of the axilla (eg, using crutches or sleeping with an arm over a chair) and repetitive pronation/supination of the forearm (eg, repeated screwdriver use).

38
Q

Central venous catheters insertion

A

insert the needle at the midpoint of the inferior surface of the clavicle pointing the needle medially

39
Q

internal jugular vein catheters insertion

A

lateral to the carotid artery needle toward the ipsilateral nipple
**carotid artery pulsation and contralateral nipple location are landmarks for internal jugular vein

40
Q

supraclavicular subclavian catheters insertion

A

insertion of the sternocleidomastoid muscle at the clavicle

*needle should be inserted lateral to the sternocleidomastoid

41
Q 
Sensory Receptors-> 
Dynamic/light
Fine touch (fine details) of an object 
Position sense
*Hairless skin*
A

Meissner Corpuscles

42
Q

Meissner Corpuscles

A

Dynamic/light
Fine touch
Position sense
Hairless skin

43
Q

Meissner Corpuscles-Myelination

A

Myelinated

44
Q 
Deep static touch-> Shapes/edges
Position sense
IN:Hair follicles
Finger tips
Superficial Skin
A

Merkel Disk

45
Q

Merkel Disk-Myelination

A

Adapts slow

Myelinated

46
Q

Pressure
Vibration

**Deep skin
Joints
Ligaments

A

Pacinian Corpuscles

47
Q

Pacinian Corpuscles-> location

A

Deep skin
Joints
Ligaments

48
Q 
Pain 
Temperature
IN:
*Epidermis
*Viscera
A

Free nerve endings

49
Q

Sensory Receptors-> Myelination

Free nerve endings

A

Aδ - fast, myelinated

C - slow, unmyelinated

50
Q

Pressure
Slippage of objects along surface
**Finger tips
Joints

A

*Ruffini Corpuscles
Adapts slow
Dendritic endings with capsule

51
Q

Peripheral Nerve Layers

3

A
  • Epineurium
  • Perineurium
  • Endoneurium
52
Q

Blood-nerve barrier → permeability barrier
Peri = around
Rejoined in limb micro-surgery
Surrounds fascicle of nerve fibers

A

Perineurium

53
Q

Dense connective tissue
Epi = outer
Surrounds entire nerve, fascicles and blood vessels

A

Epineurium

54
Q

Endo = inner

Surrounds individual myelinated nerve fibers

A

Endoneurium

55
Q

↓ leg extension
↓ patellar reflex
↓ sensation on the anterior and lateral thigh

A

Femoral (L2-L4)

*Pelvic fracture

56
Q

L2-L4

A

Femoral

Obturator

57
Q

Weakness climbing stairs or rising from a seated position

↓ hip extension

A 
Inferior gluteal (L5-S2)
*Posterior hip dislocation
58
Q

↓ thigh adduction

↓ sensation on the medial thigh

A

Obturator L2-L4

*Pelvic surgery

59
Q

↓ sensation in perineum and genital area

Fecal and/or urinary incontinence

A

Pudendal (S2-S4)

60
Q

S2-S4

A

Pudendal

**Stretch injury during childbirth

61
Q

Pain and parasthesia along the posterior leg

↓ motor and sensory function in the ankle and foot

A

Sciatic L4-S3

62
Q

L4-S3

A

1) Sciatic
**Herniated disc
Posterior hip dislocation
2)Tibial

63
Q

↓ plantar flexion
Inability to curl the toes
Loss of ankle inversion → foot is everted at rest
↓ sensation on the sole of the foot

A

Tibial (L4-S3)
*Baker cyst
Knee trauma
Tarsal tunnel syndrome

64
Q

Involved Nerve Roots->Biceps and Brachioradialis Reflexes

A

C5-C6

65
Q

Involved Nerve Roots->Triceps Reflex

A

C6-C7

66
Q

Involved Nerve Roots->Cremasteric Reflex

A

L1-L2

67
Q

Involved Nerve Roots->Patellar Reflex

A

L3-L4

68
Q

Involved Nerve Roots->Achilles Reflex

A

s1-s2

69
Q

Involved Nerve Roots->Anal Wink Reflex

A

S3-S4

STEP1 (19 decks)

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