M11: Bonus Questions - Lower Extremity Muscles & Actions Flashcards

1
Q

What are the muscles that make up the quadriceps?

A

rectus femoris

vastus lateralis

vastus medialis

vastus intermedius

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2
Q

What are the three major hip adductors (for this class)?

A

adductor magnus

adductor longus

adductor brevis

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3
Q

What are the two muscles discussed in this class that do plantar flexion?

A

gastrocnemius and soleus

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4
Q

What are the muscles that make up the “hamstrings”?

A

biceps femoris

semimembranousus

semitendinosus

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5
Q

Which muscles are involved in hip abduction?

(among the muscles on our class list)

A

gluteus medius and tensor fascia lata

Recall:

Gluteus medius does hip abduction and internal/medial rotation

Tensor fascia lata does hip abduction, hip flexion, and helps stabilize the knee)

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6
Q

What are the main muscles responsible for both hip extension and knee flexion?

(among the muscles on our class list)

A

biceps femoris

semimembranousus

semitendinosus

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7
Q

Which muscle performs hip extension, but not knee flexion?

(among the muscles on our class list)

A

gluteus maximus

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8
Q

Which muscles performs hip flexion only?

(among the muscles on our class list)

A

iliopsoas

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9
Q

Which main muscle performs dorsiflexion of the ankle?

A

tibilias anterior

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10
Q

Which muscles perform knee extension only?

(among the muscles on our class list)

A

vastus lateralis, vastus medialis, and vastus intermedius

Note: the rectus femoris does knee extension but also does hip flexion

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11
Q

Which muscles are involved in knee flexion?

(among the muscles on our class list)

A

Answer

  • the “hamstrings” (biceps femoris, semimembranousus, semitendinosus)
  • sartorius

Recall:

The “hamstrings” do knee flexion and hip extension

The sartorius does knee flexion, hip flexion, and external/lateral hip rotation

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12
Q

Which muscle performs ankle eversion?

(among the muscles on our class list)

A

peroneals

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13
Q

Which muscle performs inversion of foot/ankle?

(among the muscles on our class list)

A

tibialis anterior

Recall: the tibialis anterior does dorsiflexion of ankle, inversion of foot, and provides arch support

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14
Q

Which muscle performs hip external/lateral rotation, but not hip extension?

(among the muscles on our class list)

A

Which muscle performs hip external/lateral rotation, but not hip extension?

piriformis (external/lateral rotation of hip)

also sartorius (knee flexion, hip flexion, external/lateral rotation of hip)

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