Muscles of the hind limb Flashcards

1
Q

Which 5 muscles insert on the common calcanean tendon.

A

Gastrocnemius, Superficial digital flexor, gracillis, semitendonosus, biceps femoris (and soleus in cats).

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2
Q

Biceps Femoris m.

ORIGIN, INSERTION, ACTION, INNERVATION

A

Origin: tuber ischii and sacrotuberous ligament
Insertion: common calcanean tendon
Action: to extend the hip, stifle, and tarso-crural joint (caudal part of muscle flexes stifle)
Innervation: Sciatic nerve

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3
Q

Semitendinosus m.

Origin, Insertion, Action, Innervation

A

ORIGIN: ischiatic tuberosity
INSERTION: Distocranial border of Tibia, also to the common calcanean tendon (tuber calcanei) by means of crural fascia
ACTION: To extend the hip joint, flex the stifle joint, and extend the tarsal joints
INNERVATION: Sciatic nerve.

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4
Q

Semimebranosus m.

Origin, Insertion, Action, Innervation

A

ORIGIN: The ischiatic tuberostiy
INSERTION: Medial condole of tibia as well as the caudal rough surface of the femur
ACTION: To extend the hip joint
Extend the stifle (the part which attaches to the femur), flexes and extends the stifle (part that attaches to the tibia (depending on the position of the limb)
INNERVATION: Sciatic nerve

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5
Q

Sartorius m.

Action, Innervation (know the 2 parts)

A

Cranial and caudal parts

ACTION: To flex the hip joint, cranial part extends the stifle, caudal part flexes the stifle.
INNERVATION: Femoral nerve

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6
Q

Gracilis m.

Origin, Insertion, Action, Innervation

What is the symphyseal tendon?

A

ORIGIN: The pelvic symphysis by means of the symphyseal tendon.
INSERTION: Cranial border of tibia, and the common calcanean tendon (tuber calcanei)
ACTION: To adduct the limb, flex the stifle joint, and extend the hip and tarsal joints.
INNERVATION: Obturator nerve

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7
Q

Pectineus m.

Action, Innervation

A

ACTION: to adduct the limb
INNERVATION: Obturator nerve

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8
Q

Adductor m.

Origin, Insertion, Action, Innervation

A

ORIGIN: entire pelvic symphysis by means of symphyseal tendon
INSERTION: entire lateral lip of the caudal rough surface of the femur
ACTION: To adduct the limb and extend the hip joint
INNERVATION: Obturator nerve

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9
Q

Tensor Fascia Latae m.

Action, Innervation

A

ACTION: To tense the lateral femoral fascia, flex the hip joint, and extend stifle joint
INNERVATION: Cranial gluteal nerve

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10
Q

Superficial gluteal m.

Insertion, Action, Innervation

A

INSERTION: The third trochanter of the femur
ACTION: to abduct the limb and extend the hip joint
INNERVATION: Caudal gluteal nerve

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11
Q

Middle Gluteal and Piriformis m.

Origin, Insertion, Action, Innervation

A

ORIGIN: The crest and gluteal surface of the Ilium
INSERTION: the greater trochanter of the femur
ACTION: To extend and abduct the hip joint
INNERVATION: Cranial gluteal nerve

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12
Q

Deep Gluteal m.

Origin, Insertion, Action, Innervation

A

ORIGIN: Body of the ilium and ischiatic spine
INSERTION: Cranial aspect of greater trochanter of the femur
ACTION: To extend and abduct the hip joint
INNERVATION: Cranial gluteal nerve

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13
Q

Internal Obturator m.

Origin, Insertion, Action, Innervation

A

ORIGIN: the pelvic symphysis and dorsal aspect of ischium/ pubis
INSERTION: Trochanteric fossa of femur
ACTION: rotate pelvic limb laterally at the hip joint
INNERVATION: Sciatic Nerve

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14
Q

External Obturator m.

Origin, Insertion, Action, Innervation

A

ORIGIN: ventral surface of pubis and ischium
INSERTION: trochanteric fossa
ACTION: rotate the pelvic limb laterally at the hip joint
INNERVATION: Obturator nerve

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15
Q

Quadratus Femoris m.

Action, Innervation

A

ACTION: extend the hip joint and rotate the pelvic limb laterally
INNERVATION: Sciatic nerve

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16
Q

Gemelli m.

Action, Innervation

A

ACTION: rotate the pelvic limb laterally at the hip joint
INNERVATION: Sciatic nerve

17
Q

Quadriceps Femoris m.

Origins (of 4 heads) Insertion (common) Action, Innervation

A

ORIGIN: Vasti muscles- proximal femur, rectus femoris- ilium
INSERTION: tibial tuberosity
ACTION: to extend the stifle, (rectus femoris also flexes hip)
INNERVATION: Femoral nerve

18
Q

Iliopsoas m.

Action, Innervation

A

ACTION: flex the hip joint
INNERVATION: femoral nerve, and ventral branches of lumbar spinal nerves

19
Q

Cranial tibial m.

Origin, Insertion, Action, Innervation

A

ORIGIN: extensor groove and cranial tibial border
INSERTION: The plantar surface of the base of metatarsals I and II???
ACTION: to flex the tarso-crural joint, also rotate the paw laterally
INNERVATION: Fibular nerve

20
Q

Long Digital Extensor m.

Origin, Insertion, Action, Innervation

A

ORIGIN: extensor fossa of the femur
INSERTION: the extensor processes of digit II-V
ACTION: To extend the tarso-crural joint and interdigital joints
INNERVATION: Fibular nerve

21
Q

Fibularis (peroneus) Longus m.

Action, Innervation

A

ACTION: to flex the tarsal joints and rotate the paw medially
INNERVATION: Fibular nerve

22
Q

Gastrocnemius m.

Origin, Insertion, Action, Innervation

A

ORIGIN: Medial and lateral subpracondylar tuberosities of the femur
INSERTION: tuber calcanei (common calcanean tendon_
ACTION: to extend the tarsal joints and flex the stifle joint
INNERVATION: Tibial nerve

23
Q

Superficial Digital flexor m.

Origin, Insertion, Action, Innervation

A

ORIGIN: lateral supracondylar tuberosity of the femur
INSERTION: tuber calcanei (common calcanean tendon) as well as the bases of middle phalanges of digits II-V
ACTION: to flex the first two digital joints, flex the stifle joint, and extend the tarsal joints
INNERVATION: Tibial nerve

24
Q

Deep Digital Flexor m.

Know the names of the 3 heads
Action, Innervation

A

3 heads: lateral digital flexor, caudal tibial m,, medial digital flexor

ACTION: to flex the digits and extend the tarsal joints
INNERVATION: Tibial nerve

25
Q

Popliteus m.

Action, Innervation

A

ACTION: to rotate the leg medially
INNERVATION: Tibial nerve

26
Q

List the muscles that flex the tarsal joint and extend the digits

A

Cranial tibial m

Fibularis Longus

27
Q

List the muscles that extend the tarsal joints and flex the digits

A

Deep digital flexor (3 heads)
Superficial digital flexor
Gastrochnemius (only extends tarsal joint and flexes stifle)
Semitendonosus
Long digital extensor (only extends all joints)