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Board Studying Notecards > Anatomy > Flashcards

Anatomy Flashcards

1
Q

The cords of the brachial plexus are named for…

A

their relationship to the axillary artery.

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2
Q

4 preclavicular branches of the brachial plexus

A
  1. dorsal scapular
  2. suprascapular
  3. subclavius
  4. long thoracic
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3
Q

Musculocutaneous nerve

A

Motor to coracobrachialis, biceps, medial brachialis

Terminal sensory branch: LABCN

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4
Q

Where is the musculocutaneous nerve located relative to coracoid?

A

piercies the coracobrachialis 3-8 cm distal to coracoid

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5
Q

Safe zone for the radial nerve

A

10 cm distal to the acromion and 10 cm proximal to the lateral epicondyle

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6
Q

Where does the radial nerve pierce the lateral intermuscular septum?

A

about 7.5 cm above the elbow

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7
Q

The radial nerve splits into…

A

the PIN and SBRN.

PIN supplies all extensor muscles except mobile wad.

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8
Q

The SBRN emerges from the fascia about…

A

9 cm proximal to the radial styloid.

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9
Q

Where is the radial nerve reliably found with regards to the triceps aponeurosis?

A

4 cm proximal

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10
Q

Radial nerve compression sites

A 
FLEAS
F: fascial band at the radial head
L: recurrent Leash of Henry
E: ECRB
A: Arcade of Frohshe (most common site on proximal edge of supinator)
S: Supinator (distal edge)
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11
Q

Relative to the brachial artery, the median nerve is…

A

lateral to the artery in the upper arm and medial at the elbow running with it anterior to the intermuscular septum.

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12
Q

The AIN branches from…

A

the median nerve about 4 cm distal to the elbow and runs between the FPL and FDP to PQ.

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13
Q

The palmar cutaneous nerve of the median nerve arises…

A

about 6 cm proximal to the wrist and passes superficial to the TCL.

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14
Q

The recurrent motor branch of the median nerve usually arises…

A

deep or distal to the TCL.

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15
Q

Sites of Median nerve compression

A 
SPLAT
S: supracondylar process/ligament of Struthers
P: Pronator teres
L: Lacertus fibrosus
A: FDS Aponeurosis
T: Transverse carpal ligament
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16
Q

AIN can be compressed by…

A

Gantzer muscle (accessory FPL) or enlarged bicpes bursa.

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17
Q

With regards to the ulnar artery, the ulnar nerve is located…

A

ulnarly.

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18
Q

The dorsal cutaneous branch of the ulnar nerve branches…

A

7 cm proximal to the ulnar styloid.

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19
Q

Ulnar nerve paradox

A

distal ulnar nerve compression has worse 4th and 5th digit clawing bc hand muscles are weak but FDP supplied by ulnar nerve more proximally are not affected

20
Q

The anterior (Henry) approach to the proximal forearm uses the interval…

A

between BR (radial) and pronator teres (median).

Supinate to protect PIN.

21
Q

The posterior Thompson approach to the forearm utilizes the interval between…

A

ECRB and EDC/EPL

22
Q

The dorsal approach to the wrist is between…

A

the 3rd and 4th dorsal compartments.

23
Q

All of the intrinsic foot muscles are innervated by…

A

the tibial nerve except for EDB (DPN).

24
Q

Pectineus innervation

A

obturator and femoral

25
Q

Adductor magnus innervation

A

obturator and tibial

26
Q

The teres major is innervated by…

A

the lower subscapular nerve.

27
Q

The medial circumflex femoral artery arises from the…

A

profunda femoris.

28
Q

Screw home mechanism

A

as the knee approaches full extension, the tibia externally rotates approximately 10 degrees on the distal femur

*unlocked by popliteus

29
Q

Posteromedial Corner Components (4)

A
  • posterior oblique ligament
  • oblique popliteal ligament
  • semimembranosus
  • posterior horn of MM
30
Q

The posterior oblique ligament of the knee is the…

A

primary stabilizer against internal rotation and valgus from 0-30 degrees.

31
Q

Slocum test

A

test for PMC instability

anterior drawer with the tibia externally rotated

32
Q

At the level of the peroneal tubercle (on the calc), the peroneus brevis is…

A

dorsal to the peroneus longus.

33
Q

Spring ligament originates from…

A

the anteromedial aspect of the sustentaculum tali.

34
Q

At the Knot of Henry, the FHL is…

A

Higher than the FDL.

35
Q

Primary blood supply to the talar body is from…

A

the artery of the tarsal canal.

36
Q

Anterior approach to the ankle, watch out for…

A

anterior tibial artery and DPN between EHL and EDL.

37
Q

Posterolateral approach to the ankle interval

A

FHL (tibial) and peroneal tendons (SPN)

38
Q

The approach to the medial hallux risks…

A

the medial branch of the SPN.

39
Q

The anteromedial ankle arthroscopy portal is between…

A

the tib ant and the saphenous vein.

40
Q

Lateral ankle arthroscopy portal danger

A

dorsal intermediate branch of the SPN.

41
Q

Quadrangular space contents

A

axillary nerve

posterior humeral circumflex artery

42
Q

Triangular space contents

A

scapular circumflex artery

43
Q

Triangular interval contents

A

radial artery

profunda brachii artery

44
Q

The tibial division of the sciatic nerve provides innervations to all…

A

of the hamstring muscles in the thigh with the exception of the short head of the biceps femoris which is innervated by the common peroneal branch of the sciatic nerve.

45
Q

The acromial branch of the thoracoarcomial artery sits in the…

A

proximal interval between the anterior deltoid and the pec major and is likely to be encountered when these two muscles are dissected just distal to the anterior edge of the clavicle.

46
Q

Peroneus tertius

A

originates on the extensor surface of the fibula and inserts on the base of the 5th MT

dorsiflexes and everts

47
Q

The teres major is innervated by…

A

the lower subscapular nerve.

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