PRAC.19

Question 1

Answer 1

M. Gluteus Medius

Origin: Crista et facies g**lutea of Illium

Insertion: Trochanter major

Action: Extend hip, abduct hip

Innervation: N. gluteus cranialis

Blood supply:

• A. circumflexa femoris lateralis
• A. iliolumbalis
• A. glutea cranialis
• A. glutea caudalis

Question 2

Answer 2

M. gluteus superficialis

Origin: Sacrum, first caudal vertebrae, gluteal fascia

Insertion: Tuberostitas glutea

Action: Extend hip, draw limb backwards

Innervation: N. gluteus caudalis

Blood supply:

• A. circumflexa femoris lateralis
• A. glutea caudalis

Question 3

Answer 3

M. semitendinosus

Origin: Tuber ischiadicum

Insertion: Crista tibialis, tuber calcanei (via fascia cruralis)

Action: Extend hip, flex stifle, extend hock

Innervation: N. gluteus caudalis, n. cutaneus femoris caudalis

Blood supply: A. glutea caudalis, a. caudalis femoris distalis

Question 4

Answer 4

M. abductor cruris caudalis (Ca)

Origin: Sacrotuberous ligament pars distalis

Insertion: Crural fascia

Action: Abduct Hindlimb

Innervation: N. tibialis

Blood supply:

• A. glutea caudalis
• A. caudalis femoris distalis

Question 5

Answer 5

M. biceps femoris (Pars cran + caud)

Origin:

• Cran: Lig. sacrotuberale latum
• Caud: Tuber ischiadicum

Insertion: Via fascia lata et cruris: Patella, lig. patellae, corpus tibiae; tendo accessorus: CCT

Action: Extend hip, flex stifle, extend tarsus

Innervation:

• Cran: N. gluteus caudalis
• Caud: N. tibialis

Blood supply:

• A. glutea caudalis
• A. caudalis femoris distalis

Question 6

Answer 6

M. semimembranosus

Origin: Tuber ischiadicum (ventral)

Insertion: Labium mediale of femur, proximal tibia

Action: Extend hip and stifle

Innervation: N. gluteus caudalis

Blood supply: A. gluteus caudalis, aa. femoris media et distalis

Question 8

Answer 8

Mm. gemelli

Origin: Lateral border of ischium

Insertion: Fossa trochanterica

Action: Supinate hindlimb laterally

Innervation: N. ischiadicus

Blood supply: A. glutea caudalis

Question 9

Answer 9

M. obturatus internus (Eq/Ca)

Origin: Foramen obturatum (inner surface)

Insertion: Fossa trochanterica

Action: Supinate hindlimb laterally

Innervation: N. obturatorius, n. ischiadicus

Blood supply: A. glutea caudalis

Question 10

Answer 10

M. Gluteus Medius

Origin: Crista et facies g**lutea of Illium

Insertion: Trochanter major

Action: Extend hip, abduct hip

Innervation: N. gluteus cranialis

Blood supply:

• A. circumflexa femoris lateralis
• A. iliolumbalis
• A. glutea cranialis
• A. glutea caudalis

Question 11

Answer 11

M. piriformis (Ca)

Origin: Sacrum, lig. sacrotuberale

Insertion:Trochanter major

Action: Extend hip, abduct limb

Innervation: N. gluteus cranialis

Blood supply: A. glutea cranialis

Question 12

Answer 12

M. quadratus femoris

Origin: Tabula ossis ischii

Insertion: Distal to fossa trochanterica

Action: Extend hip, supinate hindlimb laterally

Innervation: N. obturatorius

Blood supply: A. glutea caudalis

Question 13

Answer 13

M. obturatorius externus

Origin: Foramen obturatum (outer surface)

Insertion: Fossa trochanterica

Action: Supinates hindlimb laterally

Innervation: N. obturatorius

Blood supply: A glutea caudalis

Question 19

Answer 19

M. gluteus profundus

Origin: Spina ischiadica

Insertion: Trochanter major

Action: Extend Hip

Innervation: N. gluteus cranialis

Blood supply: A. glutea cranialis

Question 20

Answer 20

N. ischiadicus/ Sciatic nerve

• Passes between m. gluteus medius et profundus
• Transect m. biceps femoris, nerve should be visible
• Branches from truncus lumbosacralis

Question 21

Answer 21

N. gluteus caudalis

• Medial to m. gluteus medialis et profundus

Question 22

Answer 22

N. gluteus cranialis

• Cut m. gluteus medius
• See nerve supplying m. gluteus superficialis

Question 23

Answer 23

N. ischiadicus/ Sciatic nerve

• Passes between m. gluteus medius et profundus
• Transect m. biceps femoris, nerve should be visible

Question 24

Answer 24

N. gluteus cranialis

• Cut m. gluteus medius
• See nerve supplying m. gluteus superficialis

Question 25

Answer 25

N. cutaneus surealis lateralis

• Passes through m. biceps femoris
• Found on the lateral side

Question 26

Answer 26

N. tibialis

Question 27

Answer 27

N. cutaneous surealis caudalis

Question 28

Answer 28

N. fibularis communis

Question 29

Answer 29

M. Gluteus Medius

Origin: Crista et facies g**lutea of Illium

Insertion: Trochanter major

Action: Extend hip, abduct hip

Innervation: N. gluteus cranialis

Blood supply:

• A. circumflexa femoris lateralis
• A. iliolumbalis
• A. glutea cranialis
• A. glutea caudalis

Question 30

Answer 30

M. biceps femoris (Pars cran + caud)

Origin:

• Cran: Lig. sacrotuberale latum
• Caud: Tuber ischiadicum

Insertion: Via fascia lata et cruris: Patella, lig. patellae, corpus tibiae; tendo accessorus: CCT

Action: Extend hip, flex stifle, extend tarsus

Innervation:

• Cran: N. gluteus caudalis
• Caud: N. tibialis

Blood supply:

• A. glutea caudalis
• A. caudalis femoris distalis

Question 31

Answer 31

**N.** **ischiadicus****/ Sciatic nerve** * Passes between *m.* *gluteus* *medius et* *profundus* * Transect *m. biceps femoris*, nerve should be visible