Primer 4 Flashcards Preview

DIT Primers 1-11 (MS ODD; LS EVEN) > Primer 4 > Flashcards

Flashcards in Primer 4 Deck (16):
1

Ulnar nerve:
Motor and sensory distribution

Motor: 1/2FCU, FDP and a bunch of hand muscles (Hypothenar muscles, Interosseous muscles, 3-4th lumbricals)

Sensory: 4th-5th digits and palmar/dorsal sides of medial hand

2

Median nerve:
Motor and sensory distribution

Motor:
--pronators and flexors of forearm/wrist/thumb except FDP& 1/2 of FCU (which have ulnar innervation)
*remember palmaris longus is a forearm flexor, just not appropriately named.
--1&2 lumbricals

Sensory: lateral palm and first 3.5 digits

3

What is "ape hand deformity"?

Median nerve pathology. Loss of thumb abduction.

4

Compare hand of benediction and ulnar claw:


Ulnar claw:
Abnormality that is present at rest
(Digits 4-5 are hyperextended at MCP/ hyperflexed at IP)

Hand of benediction:
Median nerve pathology, present when patient attempts to make a fist
(Digits 1-3 are unable to flex, while 4-5 remain functional/can flex)

5

Hallmark symptom of carpal tunnel:

Numbness of the first 3.5 digits

6

Musculocutaneous nerve:
Muscle and sensory innervation

Motor: coracobrachialis, brachialis, biceps
Sensation: lateral forearm

7

Axillary nerve:
Motor distribution
Sensory distribution
Artery with which it travels
(2) related pathologies

Motor: Deltoid and teres minor
Sensory: lateral shoulder
Artery: posterior circumflex
Related pathologies: anterior shoulder dislocation and fracture of surgical neck of humerus

8

Function of teres minor?
Relevant in what pathology?

External rotation of the arm
Axillary nerve damage

9

Long thoracic nerve
Motor distribution and related pathology

Serratus anterior
Winged scapula

10

Two causes of long thoracic nerve damage

Radical mastectomy
Blow to neck/shoulder

11

Loss of elbow flexion and forearm supination would be seen in damage to what terminal branch of the brachial plexus?

Musculocutaneous

12

Loss of ability to abduct and adduct digits would be caused by damage to what nerve/ loss of innervation to what muscles?

Ulnar nerve damage --> denervation of interosseous muscles

13

What are degmacytes

"Bite cells"- cells that have been damaged by splenic macs

14

What nerves are responsible for these reflexes:

Achilles
Patellar
Biceps
Triceps

Achilles-S1
Patellar-L4
Biceps-C5
Triceps- C7

15

Who is susceptible to Listeria infection?
Notable sequelae?

Neonates and Immunocompromised patients
May cause neonatal meningitis or spontaneous abortion via alteration of amniotic fluid

16

Radial Nerve:
Motor and sensory distribution
+(2) key related pathological conditions

Motor- BEST: brachioradialis, extensors, supinators, triceps
Sensory- posterior arm and dorsal hand

Saturday Night Palsy, fracture of shaft of humerus