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Y2 Anatomy > Lower limb muscles > Flashcards

Lower limb muscles Flashcards

1
Q

What muscles are in the anterior compartment of the thigh? (AKA quadriceps)

A

Vastus lateralis
Vastus intermedius
Vastus medialis
Rectus femoris

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2
Q

What is the innervation of the anterior compartment of the thigh?

A

Femoral nerve

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3
Q

What are the actions of the anterior compartment of the thigh?

A

Hip flexion
Hip rotation
Knee extension

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4
Q

What are the muscles in the medial compartment of the thigh?

A

Gracilis
Adductor magnus
Adductor longus
Adductor brevis
Obturator externus

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5
Q

What is the innervation of the medial compartment of the thigh?

A

Obturator nerve

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6
Q

What is the action of the medial compartment of the thigh?

A

Hip adduction

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7
Q

What is the common origin & attachment of the medial compartment of the thigh? (what is the exception?)

A

Origin: Pubic & ischial bones
Attachment: Posterior femoral shaft
Except gracilis, which attaches to the medial tibia

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8
Q

What are the muscles in the posterior compartment of the thigh? (AKA hamstrings)

A

Semitendinosis
Semimembranosis
Biceps femoris

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9
Q

What is the innervation of the posterior compartment of the thigh?

A

Sciatic nerve

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10
Q

What is the action of the posterior compartment of the thigh?

A

Hip extension
Knee flexion

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11
Q

What is the common attachment of the posterior compartment of the thigh? (what is the exception?)

A

Ischial tuberosity (except short head of biceps femoris - posterior femoral shaft)

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12
Q

What are the muscles of the superficial gluteal region?

A

Gluteus maximus
Gluteus medius
Gluteus minimus
Tensor fasciae latae

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13
Q

What are the actions of the superficial gluteal region? (3)

A

Hip abduction
Hip extension
Stabilises knee

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14
Q

What are the muscles of the deep gluteal region?

A

Piriformis
Obturator internus
Superior gemellus
Inferior gemellus
Quadratus femoris

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15
Q

What is the action of the deep gluteal region?

A

External rotation of the hip

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16
Q

What innervates the muscles of the superficial gluteal region? (what is the exception?)

A

Superior gluteal nerve
Except gluteus maximus - inferior gluteal nerve

17
Q

Where is the ‘safe area’ for intramuscular injection in the buttock? Which muscle would be injected?

A

Upper lateral quadrant of the buttock
Gluteus medius

18
Q

What muscles are in the anterior compartment of the leg?

A

Tibialis anterior
Extensor digitorum longus
Extensor hallucis longus
Peroneus tertius

19
Q

What are the functions of the anterior compartment of the leg?

A

Dorsiflexion
Inversion of foot
Extend toes

20
Q

What is the innervation of the anterior compartment of the leg?

A

Deep fibular nerve

21
Q

What are the muscles in the lateral compartment of the leg?

A

Peroneus longus
Peroneus brevis

22
Q

What is the function of the lateral compartment of the leg?

A

Foot eversion

23
Q

What is the innervation of the lateral compartment of the leg?

A

Superficial fibular nerve

24
Q

What is the function of the superficial posterior compartment of the leg?

A

Plantarflexion
(Knee flexion - plantaris and gastrocnemius)

25
Q

What muscles are in the superficial posterior compartment of the leg?

A

Gastrocnemius
Soleus
Plantaris

26
Q

What is the innervation of the posterior compartment of the leg?

A

TIbial nerve

27
Q

What is the common insertion of the superficial posterior compartment of the leg? Which tendon is involved?

A

Posterior surface of calcaneus
Via calcaneal (Achilles) tendon

28
Q

What muscles are in the deep posterior compartment of the leg?

A

Tibialis posterior
Flexor hallucis longus
Flexor digitorum longus
Popliteus

29
Q

What are the functions of the deep posterior compartment of the leg?

A

Plantarflexion
Flexion of toes
Foot inversion
Stabilises knee joint (popliteus)

30
Q

Which artery supplies the anterior compartment of the leg?

A

Anterior tibial artery

31
Q

Which artery supplies the posterior compartment of the leg?

A

Posterior tibial artery

Y2 Anatomy (8 decks)

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