Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Review / Wrong Answers > DIT review - MSK 4 > Flashcards

DIT review - MSK 4 Flashcards

1
Q

What muscle is innervated by the long thoracic nerve

A
  • Serratus anterior (outer surface of upper 8- 9 ribs -> medial border of anterior scapula)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What nerve innervates the supraspinatous m

A

Suprascapular nerve (branch of superior trunk)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What nerve innervates the infraspinatous m.

A

Suprascapular nerve (branch of superior trunk)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What nerve innervates pec major?

A

Lateral pectoral

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What muscle is innervated by upper subscapularis nerve?

A

subscapularis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What muscle is innervated by lower subscapularis nerve?

A

Teres major

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the motor and sensory innervation of musculocutaneous nerve?

A
  • Motor:
    • Biceps
    • Coracobrachialis
    • Brachialis
    • Arm flexors
  • Sensation:
    • Lateral forearm
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the motor and sensory innervation of median nerve?

A
  • Motor:
    • Pronator muscles
    • Thenar eminence
    • Wrist flexion
    • Flexion of lateral fingers
  • Sensation:
    • Thenar eminence
    • Dorsal and palmar aspect of lateral 3.5 fingers
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the motor and sensory innervation of ulnar nerve?

A
  • Motor:
    • Interosseous (abduction and adduction of fingers)
    • Hypothenar
    • Wrist flexion
    • Flexion of medial fingers
  • Sensation:
    • Medial 1.5 fingers including hypothenar eminence
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the motor and sensory innervation of axillary nerve?

A
  • Motor:
    • Deltoid
    • Teres minor
  • Sensation:
    • Deltoid area
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the motor and sensory innervation of radial nerve?

A
  • Motor:
    • Extensors of arm and wrist (e.g. triceps)
  • Sensation:
    • Posterior arm/forearm
    • Dorsal hand
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Label the branches of the brachial plexus

A

A - long thoracic

B - suprascapular

C - lateral pectora

D - upper subscapular

E - thoracodorsal

F - lower subscapular

G - musculocutaneous

H - axillary

I - radial

J - median

K - ulnar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the name and cause of damage to the superior trunk of the brachial plexus

A
  • Erb-Duchenne Palsy (“waiter’s tip”)
    • Injury to superior trunk (C5-C6)
    • Causes:
      • Lateral neck traction during delivery of babies
      • Trauma in adults
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Describe the affected nerves/presentation of Erb-Duchenne Palsy

A
  • Axillary nerve damage
    • Deltoid
      • Cannot abduct – arm hangs by side
  • Suprascapular nerve damage
    • Supraspinatous
      • Cannot abduct – arm hangs by side
    • Infraspinatous
      • Cannot externally rotate – arm medially rotated
  • Musculocutaneous nerve damage
    • Biceps
      • Cannot flex/supinate – arm extended and pronated
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the name and cause of damage to the inferior trunk of the brachial plexus

A
  • Injury to inferior trunk (C8-T1)
  • Causes:
    • Infants – upward force on arm during delivery
    • Adults – trauma (e.g. grabbing a tree branch to break a fall)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Describe presentation of Klumpke palsy

A
  • Total claw hand
    • Atrophy of thenar and hypothenar eminence
    • Inability to extend MCP joints
    • Inability to flex PIP and DIP joints
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What nerve is damaged when you are unable to extend 4th and 5th finger

A

Ulnar nerve (ulnar claw)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What nerve is damaged when you are unable to abduct thumb?

A

Median nerve (ape hand)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Unable to flex index and middle finger

A

Median nerve (benediction hand / Pope’s blessing)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Damage to what nerve causes wrist drop?

A

Radial nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Damage to what nerve causes scapular winging?

A

Long thoracic nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Cannot abduct or adduct fingers

A

Ulnar nerve damage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Loss of shoulder abduction?

A

Axiallary nerve

24
Q

Loss of elbow flexion and forearm supination

A

Musculocutaneous nerve

25
What nerve is damaged in fracture of the _shaft_ of the humerus
Radial nerve
26
What nerve is damaged in fracture of the _surgical neck_ of the humerus
Axiallary nerve
27
What artery and nerve are damaged in anterior shoulder dislocation
Axillary nerve Posterior circumflex artery
28
What muscles/function are innervated by the femoral nerve
* Innervates: * Hip flexors = Iliopsoas, pectineus, Sartorius * Knee extensors = Quadriceps: Vastus lateralis, vastus medialus, rectus femoris
29
What muscles/functions are innervated by the obturator nerve
* Innervates: * Adductors = adductor brevis, adductor longus, adductor magnus * Knee flexor = gracilius
30
What muscles/functions are innervated by the superior gluteal nerve
* Innervates: * Hip abduction and medial rotation of thigh à tensor fasciae lata, gluteus minimus, gluteus medius
31
What muscles/functions are innervated by the inferior gluteal nerve
* Innervates: * Hip extension and lateral rotation of thigh = gluteus maximus
32
What muscles/function are innervated by the sciatic nerve
* Innervations * Hip extension and knee flexions = Hamstring portion of adductor magnus, biceps femoris long head, semitendinous, semimembranous * Sensation to posterior thigh, gluteal region, lower leg except for medial side
33
What muscles/functions are innervated by the tibial nerve
* Innervates: * Plantar flexion = Calf muscles: gastrocnemius, soleus, plantaris * Toe flexion = flexor digitorum longus, flexor halluces longus * Unlocks knee = popliteus * Inversion of foot = tibialis posterior
34
What muscles/function are innervated by the deep peroneal nerve
* Innervation * Foot eversion = peroneus tertius * Foot dorsiflexion = tibialis anterior, extensor digitorum longus, extensor hallicus longus
35
What muscles/function are innervated by the superficial peroneal nerve
* Innervation * Foot eversion = peroneus longus, peroneus brevis
36
What nerve gets damage with disc herniation
Sciatic
37
What nerve gets damage with anterior hip dislocation
Obturator
38
What nerve gets damage with pelvic fracture
Femoral
39
What 2 nerves get damage with posterior hip dislocation
Superior gluteal Inferior gluteal
40
What nerve gets damage with knee injury
Tibial
41
What nerve gets damage with fibula neck fracture/lateral knee injury
Deep peroneal
42
Damage to what nerve causes defect in sensation to lower leg
sciatic
43
Damage to what nerve causes Trendelenberg gait
Superior gluteal
44
Damage to what nerve causes foot drop
Deep peroneal
45
Damage to what nerve causes defect in plantarflexion
Tibial
46
Damage to what nerve causes defect in hip extension
Inferior gluteal
47
Damage to what nerve causes defect in thigh adduction
Obturator
48
Damage to what nerve causes defect in thigh flexion
Femoral
49
Damage to what nerve causes defect in sensation of anterior thigh
Femoral
50
Damage to what nerve causes defect in sensaton to medial thigh
Obturator
51
What nerves are involved in each of the following reflexes? * Achilles * Patellar * Biceps/brachioradialis * Triceps * Cremasteric * Anal wink
* Clinical reflexes: * Achilles reflex = S1, S2 (“buckle my shoe”) * Patellar reflex = L3, L4 (“kick the door”) * Biceps and brachioradialis reflexes = C5, C6 (“pick up sticks”) * Triceps reflex = C7, C8 (“lay them straight”) * Cremasteric reflex = L1, L2 (“testicles move”) * Anal wink reflex = S3, S4 (“winks galore”)
52
Describe the arteries of the leg
53
Describe type 1 muscles (fast/slow, red/white, form of energy, increased in endurance/resistance exercise)
* Type 1: * Slow twitch * Red fibers due to increased mitochondria and myoglobin concentration = increased oxidative phosphorylation = sustained contraction * Proportion increases after endurance training
54
Describe type 2 muscles (fast/slow, red/white, form of energy, increased in endurance/resistance exercise)
* Type 2: * Fast twitch * White fibers due to decreased mitochondria and myoglobin concentration = increased anaerobic glycolysis * Proportion increases after weight/resistance training
55
Describe what each of the bands are (A, I, H) on a sarcomere
* A band: * Contains thick (myosin) filaments (both those over-lapped with thin filaments and those non-overlapped) * Always remains the same length * I band: * Contains Z line and only thin (actin) filaments that are not overlapped * Width of I band will lengthen during muscle relaxation * H band: * Contains M line and only thick filaments that are not overlapped * Width of H band will lengthen during muscle relaxation * The segment between H and I bands (A band – H band) is where the thick and thin filaments overlap * The width of this region shortens during muscle relaxation

Review / Wrong Answers (140 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions