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General Anatomy (2nd year) > lower compartment > Flashcards

lower compartment Flashcards

(60 cards)

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1
Q

Gastrocnemius Medial Head Origin

A

superior & posterior part of the medial condyle of femur

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2
Q

Gastrocnemius Lateral Head Origin

A

lateral surface of lateral condyle

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3
Q

Gastrocnemius Insertion

A

middle 1/3 of posterior surface of calcaneus

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4
Q

Gastrocnemius Action

A

knee flexion, plantar flexion of talocrural joint

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5
Q

Gastrocnemius Nerve

A

Tibial Nerve (S1 - S2)

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6
Q

Soleus Origin

A

back of head of fibula, upper 1/4 of posterior surface of fibula, soleal line of tibia

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7
Q

Soleus Insertion

A

tendo calcaneus

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8
Q

Soleus Action

A

plantarflexion of talocrural joint

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9
Q

Soleus Nerve

A

Tibial Nerve (L5, S1-S2)

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10
Q

Plantaris Origin

A

lower part of lateral supracondylar line, oblique popliteal ligament, belly is ~ 7-10cm long

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11
Q

Plantaris Insertion

A

tendo calcaneus

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12
Q

Plantaris Action

A

aids gastrocnemius

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13
Q

Plantaris Nerve

A

Tibial Nerve (L4-L5, S1-S2)

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14
Q

Popliteus Origin

A

lateral condyle of femur (below & behind epicondyle), oblique popliteal ligament, lateral meniscus

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15
Q

Popliteus Insertion

A

triangular area above soleal line

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16
Q

Popliteus Action

A

medial rotation of tibia/lateral rotation of femur, unlocks the knee @ beginning of flexion from full extension, also helps to reinforce posteriorr ligaments of knee joint

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17
Q

Popliteus Nerve

A

Tibial Nerve (L4-L5, S1)

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18
Q

Flexor Hallucis Longus Origin

A

lower 2/3 of posterior surface of fibula, interosseous membrane, adjacent intermuscle septa & fascia, muscles passes obliquely down leg

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19
Q

Flexor Hallucis Longus Insertion

A

plantar aspect of base of distal phalanx of great toe

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20
Q

Flexor Hallucis Longus Action

A

flexion of IP & MTP joints of great toe, plantar flexion of talocrural joint, inversion of subtalar joint

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21
Q

Flexor Hallucis Longus Nerve

A

Tibial Nerve (L5, S1-S2)

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22
Q

Flexor Digitorum Longus Origin

A

posterior surface of tibia (medial to tib. Post, below soleal line), fascia covering tibialis posterior, mm belly extends within 7-8cm of distal end of tibia

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23
Q

Flexor Digitorum Longus Insertion

A

Passes behind the medial malleolus, passes obliquely forward & laterally (medial to FHL), to plantar surfaces of bases of distal phalanges of toes 2-5

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24
Q

Flexor Digitorum Longus Action

A

Flexion of DIP, PIP, MTP joints of 2-5th digits, plantar flexion of talocrural joint, inversion of subtalar joint

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25
Flexor Digitorum Longus Nerve
Tibial Nerve (L5, S1-S2)
26
Tibialis Posterior Origin
posterior surface of tibia, interosseous membrane, adjacent intermuscular septa & deep fascia, upper 2/3 of posterior surface of fibula
27
Tibialis Posterior 1st tendon Insertion
tubercle of navicular, medial cuneiform, cuboid
28
Tibialis Posterior 2nd Tendon Insertion
intermediate cuneiform, bases of 2nd, 3rd & 4th metatarsal
29
Tibialis Posterior Action
inversion of subtalar joint, plantarflexion of talocrural joint, maintains medial longitudinal arch in dynamic work
30
Tibialis Posterior Nerve
Tibial Nerve (L4-L5, S1)
31
Tibialis Anterior Origin
lateral condyle of tibia, upper 1/2 of lateral surface of tibia, anterior interosseous membrane
32
Tibialis Anterior Insertion
medial & plantar surface of medial cuneiform, base of 1st metatarsal
33
Tibialis Anterior Action
dorsi flexion of talocrural joint, inversion of subtalar joint, acts from below to maintain balance, supports medial longitudinal arch in walking
34
Tibialis Anterior Nerve
Deep Peroneal Nerve (L4-L5, S1)
35
Extensor Hallucis Longus Origin
middle 1/2 of anteromedial surface of fibula, middle 1/2 of anterior lateral interosseous membrane
36
Extensor Hallucis Longus Insertion
base of distal phalanx of great toe, slip to base of proximal phalanx
37
Extensor Hallucis Longus Action
extension of phalanges of great toe at IP & MTP joints, dorsiflexion of talocrural joint
38
Extensor Hallucis Longus Nerve
Deep Peroneal Nerve (L4-L5, S1)
39
Extensor Digitorum Longus Origin
Lateral condyle of tibia, upper 3/4 of antermedial surface of fibula, upper anterior lateral surface of interosseous membrane
40
Extensor Digitorum Longus Insertion
base of middle phalanx (intermediate slip), base of distal phalanx (2 lateral slips)
41
Extensor Digitorum Longus Action
extension of toes @ DIP, PIP, MTP joints, dorsiflexion of talocrural joint
42
Extensor Digitorum Longus Nerve
Peroneal Nerve (L4-L5, S1)
43
Peroneus Longus Origin
head of fibula, upper 2/3 of lateral surface of fibula
44
Peroneus Longus Insertion
lateral side of base of 1st metatarsal (plantar aspect), lateral side of medial cuneiform (plantar aspect)
45
Peroneus Longus Action
eversion of subtalar joint, plantar flexion of talocrural joint, helps to maintain longitudinal & transverse arch
46
Peroneus Longus Nerve
Superficial Peroneal Nerve ( L4-L5, S1)
47
Peroneus Brevis Origin
lower 2/3 of lateral surface of fibula, anterior to peroneus longus
48
Peroneus Brevis Insertion
tubercle (styloid) on the base of 5th metatarsal
49
Peroneus Brevis Action
eversion of subtalar joint, plantar flexion of talocrural joint
50
Peroneus Brevis Nerve
Superficial Peroneal Nerve ( L4-L5, S1)
51
The medial surface of the fibula has an articular facet that articulates with what?
The lateral surface of the talus
52
Which tibial condyle is oval & which is circular?
Circular - lateral condyle Oval - medial condyle
53
What % of weight bearing does the fibula account for?
10-15% at most
54
What crosses obliquely at the upper end of the posterior surface of the tibia?
Soleal line
55
How many boarders & surfaces does the tibia have?
3 of each | Triangular
56
What does the horizontal roughened groove on the medial condyle of the tibia posterior surface provide insertion for?
Semimembranosus
57
What 2 borders are the posterior surface of the tibia found between?
Medial & interosseous borders
58
How many degrees is the distal end of the tibia rotated in relation to the proximal end?
30*
59
Where is the fibular notch located on the tibia?
Lateral surface of the lower end of the tibia
60
List 3 characteristics of the tibial tuberosity
1) anterior 2) triangular 3) attachment for patellar tendon

General Anatomy (2nd year) (8 decks)

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