Skeletal Muscles and Ligaments Flashcards Preview

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Flashcards in Skeletal Muscles and Ligaments Deck (25):
1

thenar eminence

control thumb movement
-opponenes pollicis
-abductor pollicis brevis
-flexor pollicis brevis
Innervation = MEDIAN NERVE

2

hypothenar eminence

control of 5th digit movement
-opponens digiti minimi
-abductor digiti minimi
-flexor digiti minimi
Innervation = ULNAR NERVE

3

dorsal interosseous muscle

function = abducts the fingers
position = between the intercarpal bones
innervation = ULNAR NERVE
DAB = dorsal = ABducts

4

palmar interosseous muscle

function = adduct the fingers
position = between the intercarpal bones
innervation = ULNAR NERVE
PAD = Palmar = ADDucts

5

lumbrical muscles

flex the fingers at the metacarpal joint
extend the fingers at the interphalangeal joints
3rd and 4th = medial (pinky and ring finger) = ULNAR NERVE
1st and 2nd = MEDIAN NERVE

6

rotator cuff muscles

shoulder muscles - SITS
supraspinatus
infraspinatus
teres minor
subscapularis
fxn: shoulder movement and rotation

7

supraspinatus

fxn: abducts arm for initial 10-15 degrees (then deltoid takes over)

8

deltoid muscle

abduction of arm

9

infraspinatus

fxn: lateral arm rotation

10

teres minor

fxn: lateral arm rotation, adduction of arm

11

subscapularis

fxn: medial arm rotation, adduction of arm

12

knee ligaments

lateral collateral ligament
medial collateral ligament
anterior cruciate ligament (ACL)
posterior cruciate ligament (PCL)

13

medial collateral ligament (MCL)

attaches femer to tibia on medial side of leg

14

lateral collateral ligament (LCL)

connects femur to fibula lateral

15

anterior cruciate ligament (ACL)

structural integrity to knee
two attachment sites
1. lateral condyle of femur
2. anterior surface of tibial plateau
anterior to lateral

16

posterior cruciate ligament (PCL)

structural integrity to knee
two attachment sites
1. posterior tibial plateau
2. medial condyle of femur

17

lateral meniscus

injury with lateral force
cushion

18

knee menisci

cartilaginous tissue
function
-structural integrity
-reduce friction
-disperse upper body weight

19

unhappy triad knee injury

etiology: lateral force (common football injury)
injured ligaments: MCL, ACL, lateral meniscus

20

Anterior Drawer Sign ACL injury on exam

ACL injury on exam
grab the shin
hold the femur stable
pull lower leg forward

21

passive abduction of knee joint

medial collateral ligament injury

22

passive adduction of knee joint

lateral collateral ligament injury

23

repetitive elbow injuries

due to chronic repetitive damage to the elbow and tendons

24

lateral epicondylitis

due to chronic repetitive damage to the elbow and tendons
"tennis elbow"
lateral collateral ligament

25

medial epicondylitis

"golfers elbow"
medial collateral ligament injury