NBME Flashcards
Location of multipolar neurons
Ventral, lateral an dorsal horns, and sympathetic chain ganglia contain multipolar neurons
Unipolar or pseudounipolar neuron location
dorsal root galglia
DRG has synapses or no?
NO
waiters tip hand results from:
damage to upper trunk
Cause of winged scapula
paralysis of the serratus anterior m. Damage to the long thoracic nerve which arises from the roots of the brachial plexus (c5-c7)
Action of pec minor
Action of pec minor
drawing scapula down and forward
Innervation of pec minor
medial and lateral pectoral nerves that arise from the medial and lateral cords of the brachial plexus. Not attached to clavicle
Intercostobrachial nerve arises from:
lateral cutaneous branch of the second intercostal nerve.
Intercostobrachial nerve supplies what:
Skin on the medial side of the arm, no motor fibers.
Ape hand
a hand with the thumb permanently extended due to injury to the median nerve.
wrist drop
inability to flex the wrist due to damage of the radial nerve
waiter’s tip hand
from damage to the upper trunk of the brachial plexus.
Palmar or dorsal - which interosseous muscles does the middle finger lack?
palmar, you can’t adduct the middle finger
Attachment points of intrinsic muscles of the hand-thenar
Opponens pollicis - 1st metacarpal. All the rest on the proximal phalanges
Ulnar bursa contains
tends of the FDS and FDP
Radial bursa contains
flexor pollicis longus.
What innervates deltoid?
axillary nerve
What innervates supraspinatus muscle?
suprascapular nerve
Floor of the cubital fossa
Supinator and brachialis mm
Supinatory innervation
Radial n
Muscles innervated by anterior interosseous n. (branch of median n)
(branch of median n)
flexor policis longus, half of flexor digitorum profundus, and pronator quadratus
innervation of interosseous muscles, palmar and dorsal
ulnar n.
4 muscles of the rotator cuff
Supraspinatus
Infraspinatus
Teres minor
Subscapular
Axillary nerve supplies
deltoid and teres minor, lateral rotators of the humerus. Arises from posterior cord.
What muscle(s) insert(s) onto the lesser tubercle of the humerus?
subscapularis
What muscle(s) insert(s) onto the greater tubercle of the humerus?
supraspinatus, infraspinatus, and teres minor
Which muscle associated with the thumb is innercated by the ulnar nerve?
Adductor pollicis.
Function of the lateral horn:
between t1 and l2, contains cell bodies of sympathetic preganglionic fibers.
Greater saphenous vein - deep or superficial to fascia lata?
superficial
Most of the blood supply to the hip joint comes from:
the medial fomoral circumflex artery
