Muscles (O, I, A) P. 15-17

Question 1

M. gluteus superf.

Answer 1

O: Sacrum, 1st caudal vertebrae + partly from lig. sacrotuberale

I: Tuberositas glutea

A: Extension of hip joint

Question 2

M. gluteus medius

Answer 2

O: Crista iliaca + facies glutea

I: Trochanter major (femur)

A: Strongest extensor of hip joint

Question 3

M. gluteus prof.

Answer 3

O: Facies glutea + corpus ossis illi

I: Trochanter major (femur)

A: Extensor of hip joint

Question 4

M. piriformis

Answer 4

O: Last sacral + first caudal vertebrae

I: Trochanter major (femur)

A: Extensor of hip joint

Question 5

M. obturatorius externus

Answer 5

O: Outer surface of pelvis (around for. obturatum)

I: Fossa trochanterica (femur)

A: Supination of hindlimd (lateral rotation)

Question 6

M. gemelli

Answer 6

O: Lateral side of corpus ossis ischii (ventral to incisura ischiadica minor)

I: Fossa trochanterica (femur)

A: Supination of hindlimb

Question 7

M. obturatorius internus

Answer 7

O: Inner surface of pelvis (around for. obturatum)

I: Tendon goes over belly of M. gemelli, before inserting on fossa trochanterica (femur)

A: Supination of hindlimb

Question 8

M. quadratus femoris

Answer 8

O: Ventral surface of tabula ossis ichii

I: Fossa trochanterica (femur)

A: Extension of hip + supination of hindlimb

Question 9

M. biceps femoris

Answer 9

O:
> cranial part - Lig. sacrotuberale
> caudal part - tuber ischiadicum

I: Fascia lata, lig. patellae, tuberositas tibiae, crista tibiae, and tuber calcanei (part of tendo acceccorius)

A: Extends hip and hock
~ cran. part extends stifle, caud. part flex stifle

Question 10

M. tensor fasciae latae

Answer 10

O: Tuber coxae

I: Radiates into fascia lata and fascia cruris

A: Tenses fascia lata, flex hip, extends stifle

Question 11

M. abductor cruris caudalis

Answer 11

O: Distal part of lig. sacrotuberale

I: Disappears into crural fascia on lat. side

A: Abduct hindlimb, flexes stifle

Question 12

M. semitendinosus

Answer 12

O: Tuber ischiadicum

I: Medially on crista tibiae + tuber calcanei (part of tendo acceccorius)

A: Extends hip, flexes stifle, extends hock (tarsus)

Question 13

M. semimembranosus

Answer 13

O: Ventral aspect of tuber ischiadicum

I:
~Cran. belly - Labium med. + condylus medialis (femur)
~ Caud. belly - Condylus med. (tibia)

A: Extends hip, flexes stifle

Question 14

M. sartorius

Answer 14

OBS! Cran. et caud. part in dogs

O: Crista iliaca, spina iliaca ventralis cranialis, fascia thoracolumbalis

I: Radiating into fascia lata + fascia cruris
~ Cran. part - above stifle joint
~ Caud. part - below stifle joint

A: Flex hip + flex/extends stifle depending on which part contracts more

Question 15

M. quadriceps femoris

Answer 15

O:
> vastus lat. - proximo-craniolaterally on femur
> vastus med. - proximo-craniomedially on femur
> vastus intermedius - proximocran. surface on femur
> M. rectus femoris - area m. recti femoris med. et lat.

I: Patella + by means of lig. patellae on tuberositas tibiae

A: Strongest extensor of stifle
~ M. rectus femoris also flexes hip

Question 16

M. pectineus

Answer 16

O: Pecten ossis pubis

I: Labium med. on femur

A: Adduction of thigh

Question 17

M. adductor

Answer 17

O:
> M. adductor longus - ramus cran. ossis pubis
> M. adductor magnus et brevis - symphysis pelvis, ramus caud. ossis pubis, ramus ossis ischii

I: Facies aspera + labium lat. on femur

A: Adducts hindlimb, extends hip

Question 18

M. gracilis

Answer 18

O: Symphysis pelvis

I: Medially on crista tibiae, fascia cruris + tuber calcanei (as part of tendo acceccorius)

A: Adducts hindlimb, extends hip, flex stifle, extends tarsus