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Anatomy > Exam II Lecture 1 > Flashcards

Exam II Lecture 1 Flashcards

1
Q

Muscles of the superficial posterior compartment

A

Plantaris
Med/Lat gastrocnemius
Soleus
Tendo calcaneus

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2
Q

Gastrocnemius crosses

A

Both knee and ankle joint

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3
Q

Two heads of gastrocnemius come from

A

Inferior boundary of popliteal fossa

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4
Q

Deep posterior compartment muscles

A 
Popliteus
Tibialis posterior
Peroneus longus
Flexor digitorum longus
Peroneus brevis
Flexor hallucis longus
People bitch pop took players for drinks for having long practices lately
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5
Q

Popliteus function/location

A

Floor of popliteal fossa

Flexes/rotates knee

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6
Q

Flexor digitorum longus location/function

A

Posterior to medial malleolus and tendon of tibialis posterior
Plantarflexes foot at ankle joint

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7
Q

Tibia characteristics

A

Most commonly fractured long bone
Poor blood supply
Anteromedial surface is bare (available for bone graft)
Soleal (oblique) line on posterior surface

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8
Q

Fibula characteristics

A

Lateral malleolus important in ankle stability

Site for muscle attachment

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9
Q

Crural fascia is continuous with ___ which

A

Fascia latae, which attaches to anterior and medial borders of tibia
Forms retinacula in foot

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10
Q

Superior retinaculum

A

Binds tendons in anterior crural compartment

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11
Q

Inferior (extensor) retinaculum

A

Y-shaped

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12
Q

Flexor retinaculum

A

Binds tendons of deep posterior compartment

DPC

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13
Q

Superior/inferior peroneal retinacula

A

Binds tendons of lateral crural compartment

LCC

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14
Q

Superficial posterior compartment cutaneous nerves

A

Lateral sural cut nerve- from common peroneal

Medial sural cut nerve- from tibial nerve

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15
Q

Sural nerve runs with

A

Lesser saphenous vein

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16
Q

Flexor hallicus longus

A

Tendon occupies groove on posterior surface of talus
Passes posterior to medial malleolus
Passes b/w two sesamoid bones
-Push-off muscle for walking/jumping/running

17
Q

Tibialis posterior function

A

Plantar flexion and foot inversion

Maintain medial longitudinal arch

18
Q

Nerve/blood supply tibialis posterior

A

Nerve- tibialis nerve

Blood- Posterior tibial artery

19
Q

Tibialis anterior location/function/paralysis result

A

Lateral to crest of tibia
Foot dorsiflexion/inversion
Paralysis leads to foot drop

20
Q

Extensor digitorum longus tendons/function

A

4 tendons that insert on extensor expansion like in hand

-Toe extension at MTP and dorsiflexion

21
Q

Anterior compartment muscles

A 
Tibialis anterior
Extensor digitorum longus
Extensor hallucis longus
Peroneus tertius
TAEDL EHL PT
22
Q

Peroneus tertius part of what/function

A

Part of extensor digitorum longus
Sometimes missing
Foot dorsiflexion/eversion

23
Q

Innervation of anterior compartment is done by, location of nerve, accompanies what

A

Deep peroneal nerve
Runs deep to extensor digitorum longus
Accompanies anterior tibial artery b/w EHL and TA

24
Q

Blood supply of anterior compartment by, branch of what, begins where, becomes what

A

Anterior tibial artery
Branch of popliteal artery
Begins at inferior border of popliteus
Becomes dorsalis pedis artery at ankle joint

25
Q

Lateral compartment muscles

A

Peroneus (fibularis) longus

Peroneus (fibularis) brevis

26
Q

Peroneus longus vs brevis

A

More superficial, easily palpated

27
Q

Peroneus longus tendon

A

Tendon uses lateral malleolus as a pulley

Crosses sole of foot and inserts of first metatarsus and cuneiform

28
Q

Peroneus longus function

A

Helps maintain transverse and longitudinal arches of the foot

29
Q

Peroneus brevis location/insert/function

A

Deep to peroneus longus
Inserts on lateral tuberosity
Plantar flexion and foot eversion

30
Q

Lateral compartment nerve supply-location/insert

A

Superficial peroneal nerve
Deep to peroneus longus
Inserts on lateral tuberosity

31
Q

Blood supply to lateral compartment

A

No major arteries in this compartment

Muscular branches arise from peroneal artery

32
Q

Peroneal artery is branch of

A

Posterior tibial artery

Anatomy (34 decks)

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