Lab 10 Learning Issues Hind Limb Flashcards Preview

Equine Anatomy > Lab 10 Learning Issues Hind Limb > Flashcards

Flashcards in Lab 10 Learning Issues Hind Limb Deck (34)
Loading flashcards...
1

bifurcation of the sciatic nerve

into common fibular (peroneal) and tibial nerves

2

common fibular (peroneal) nerve

innervates cr crus muscles

3

tibial nerve

innervates cd crus muscles

4

branches of common fibular (peroneal) nerve

superficial and deep fibular (peroneal) nerve

5

superficial peroneal nerve

providing cutaneous sensation to skin of lateral and dorsal surfaces of metatarsus as far distally as fetlock

6

Hip extensors

biceps femoris, semitendinosus, semimembranosus, superficial gluteal (contributes to extension but almost entirely adduction/abduction plane of fiber direction), middle gluteal, deep gluteal

7

Hip Flexors

Iliopsoas

8

stifle flexion

biceps femoris, semitendinosus, semimembranosus

9

stifle extension

Quadriceps femoris, biceps femoris

10

extension of tarsus

any muscle attaching to calcanean tendon participates in extending tarsus; biceps femoris, semitendinosus, gracilis, gastrocnemius, superficial digital flexor

11

flexion of tarsus

cr tibial muscle, long digital extensor muscle, fibularis longus muscle
** all 3 on cr lateral surface of tibia)

12

gracilis

proximal attachment
- along pelvis (iliopubic eminence/ pubis/ symphysis)
distal attachment
- cr tibia
innervation
- obturator nerve

13

gastrocnemius

-supracondylar tuberosities (lat/ med) to calcanean tuber, main contributor to common calcanea tendon
- innervation via tibial nerve

14

superficial digital flexor

- supracondylar fossa to P1 and P2; main contributor to common calcanean tendon
innervation
- tibial nerve

15

cranial tibial muscle

- on cr lateral surface of stifle
fused to 1/2 tarsal bones (cunean tendon or medial branch of cranial tibial) and metatarsal tuberosity (dorsal branch with dorsal branch of fibularis tertius)
innervation
- common fibular (peroneal) nerve

16

long digital extensor

- on cr lateral surface of stifle
lateral collateral ligament of stifle (and nearby tibia/ fibula) to dorsal aspect of P1/ P2/ P3 (joins with tendon of long digital extensor distal to tarsus)
innervation
- common fibular (peroneal) nerve

17

fibularis (peroneus) tertius

- on cr lateral surface of stifle
extensor fossa of distal femur with long digital extensor to metatarsal tuberosity (dorsal branch), other branches to other tarsal bones
innervation
- common fibular (peroneal) nerve

18

Hip extensor innervation

-biceps fem, semiteninosus, semimembranosus (sciatic nerve, cd gluteal nerve)
- superficial gluteal (cd gluteal, cr gluteal)
- middle gluteal and deep gluteal (cr gluteal)

19

hip flexor innervation

- iliopsoas (ventral branches of lumbar nerves/ lumbosacral plexus likely femoral)

20

stifle flexion

-biceps fem, semiteninosus, semimembranosus (sciatic nerve, cd gluteal nerve)

21

stifle extension

- quadriceps femoris (femoral nerve)
- biceps femoris (sciatic nerve, cd gluteal nerve)

22

tarsal extension

-biceps fem, semiteninosus (sciatic nerve, cd gluteal nerve)
- gracilis (obturator nerve)
- gastrocnemius, superficial digital flexor (tibial nerve)

23

tarsal flexion

Cranial tibial muscle, long digital extensor muscle, fibulas longus muscle (Common fibular (peroneal) )

24

reciprocal apparatus

long extensor and peroneus tertius arise by common tendon from extensor fossa of femur. Peroneus tertius mechanically opposes action of gastrocnemius and tendinous superficial digital flexor; when stifle is flexed superficial flexor causes hock to be extended via reciprocal mechanism

25

bursa

small fluid filled sac lined with synovial membrane containing synovial fluid located in places where friction would otherwise occur; function to facilitate gliding of skin, muscles, or tendons over bony or ligamentous surfaces

26

tendon sheath

fluid filled sleeve that resembles a synovial bursa wrapped around a tendon so as to form a continuous sheath except for mesotenodn

27

lateral digital extensor

-lateral collateral ligament of stifle (and nearby tibia/ fibula) to dorsal aspect of P1/P2/P3 (joins with tendon of long digital extensor distal to tarsus)
- common fibular (peroneal) nerve

28

deep digital flexor

-multiple heads from proximal tibia to plantar aspect of P3
- tibial nerve

29

retinacula

band like thickening of deep fascia which hold tendons in place as they pass over the hock

30

proximal extensor retinaculum

- on dorsal surface of hock
-binds down tendons of long digital extensor, peroneus tertius, and tibias cranial on distal end of tibia