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MUSC Anatomy Exam 2 > Muscle Innervations, Actions, Insertions, and Origins > Flashcards

Muscle Innervations, Actions, Insertions, and Origins Flashcards

1
Q

Sartorius Muscle

A

Innervation: Femoral Nerve

Origin: Anterior Superior Iliac Spine (ASIS)

Insertion: Medial Shaft of Tibia

Action: Flexes, ABDucts, medially rotates thigh

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2
Q

Iliac Muscle

A

Innervation: Femoral Nerve

Origin: Iliac Fossa

Insertion: Lesser Trochanter

Action: flexes thigh

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3
Q

Psoas Major Muscle

A

Innervation: femoral nerve

Origin: transverse process and intervertebral disks of T12-L5

Insertion: Lesser trochanter

Action: flexes thigh

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4
Q

Pectineus Muscle

A

Innervation: Femoral Nerve

Origin: Pectin Pubis of Superior Ramus of Pubis

Insertion: below the lesser trochanter

Action: flex and adduct thigh

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5
Q

Rectus Femoris Muscle

A

Innervation: Femoral Nerve

Origin: Anterior inferior Iliac Spine

Insertion: quadriceps tendon into patella

Action: flexes thigh, extends knee

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6
Q

Vastus Lateralis Muscle

A

Innervation: femoral nerve

Origin: upper end of femur, upper half linea aspera, lateral intermuscular septum

Insertion: quadriceps tendon into patella

Action: extends leg

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7
Q

Vastus Medialis Muscle

A

Innervation: femoral Nerve

Origin: upper end of femur, linea aspera, medial supracondylar line, medial intermuscular septum

Insertion: quadriceps tendon into patella

Action: extension of leg

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8
Q

Vastus Intermedialis Muscle

A

Innervation: Femoral Nerve

Origin: upper femur, anterior and lateral surface of femur shaft

Insertion: quadriceps tendon into patella

Action: extension of leg at knee joint, articulates genuine retracts synovial membrane during knee motion

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9
Q

Gluteus Maximus Muscle

A

Innervation: inferior gluteal nerve

Origin: ilium behind posterior gluteal line, Sarum, coccyx, sacrotuberous ligament

Insertion: iliotibial tract and gluteal tuberosity of femur

Action: extension thigh, laterally rotates thigh, extends knee

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10
Q

Gluteus Medius Muscle

A

Innervation: superior gluteal nerve

Origin: ilium between posterior and anterior gluteal line

Insertion: greater trochanter

Action: abducts thigh, tilts pelvis when walking, medially rotate thigh

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11
Q

Gluteus Minimus Muscle

A

Innervation:superior gluteal nerve

Origin: ilium between anterior and inferior gluteal line

Insertion: greater trochanter

Action: abducts thigh, tilts pelvis when walking, medially rotate thigh

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12
Q

Tensor Fasciae Latae Muscle

A

Innervation: superior gluteal nerve

Origin: iliac crest

Insertion: iliotibial tract

Action: flex thigh, abduct thigh, extend knee

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13
Q

Piriformis

A

Innervation: Nerve to piriformis

Origin: sacrum

Insertion: greater trochanter

Action: lateral rotates thigh

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14
Q

Obturator Internus

A

Innervation: nerve to obturator internus

Origin:obturator membrane and obturator foramen

Insertion: greater trochanter

Action: lateral rotator of thigh

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15
Q

Gemellus Superior

A

Innervation: nerve to obturator internus

Origin: spine of ischium

Insertion: blends with tendon of obturator internus

Action: lateral rotator of thigh

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16
Q

Gemellus Inferior

A

Innervation: nerve to quadratus femoris

Origin: ischial tuberosity

Insertion: blends with tendon of obturator internus

Action: lateral rotator of thigh

17
Q

Quadratus Femoris

A

Innervation: nerve to quadratus femoris

Origin: ischial tuberosity

Insertion: intertrochanteric crest and quadrate tubercle of femur

Action: lateral rotator of thigh

18
Q

Gracilis

A

Innervation: anterior division of obturator nerve

Origin:ramus of pubis, ramus of ischium

Insertion: upper tibia shaft between sartorial and semitendinosis

Action: adducts thigh, flex leg, rotate tibia medially

19
Q

Adductor Longus

A

Innervation: anterior division of obturator nerve

Origin: body of pubis between pubic crest and symphysis

Insertion: medial lip of linea aspera

Action: adducts thigh, assists in medial rotation

20
Q

Adductor Brevis

A

Innervation: anterior division of obturator nerve

Origin: body and inferior ramus of pubis

Insertion: upper half of linea aspera

Action: adducts thigh, assists in medial rotation

21
Q

Adductor Magnus

A

Innervation: adductor portion- posterior division of obturator nerve; hamstring portion- tibial nerve

Origin: inferior ramus of pubis, ramus of ischium, ischial tuberosity,

Insertion: posterior surface of femur, adductor tubercle

Action: adducts thigh, medially rotates thigh, extend thigh

22
Q

Obturator Externus

A

Innervation: posterior division of obturator nerve

Origin: obturator membrane

Insertion: trochanteric fossa

Action: laterally rotates thigh

MUSC Anatomy Exam 2 (10 decks)

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