Actions/Origins/Insertions/Innervations (Post Midterm) Flashcards

1
Q

What is the action of the gastrocnemius?

A

It plantar flexes the ankle when the knee is extended and flexes the knee joint

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2
Q

What is the proximal attachment of the medial and lateral head of the gastrocnemius?

A

Medial head: The popliteal surface of the femur, superior to the medial condyle.
Lateral head: The lateral aspect of the lateral condyle of the femur.

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3
Q

What is the distal attachment of the gastrocnemius?

A

The posterior surface of the calcaneus via the calcaneal tendon

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4
Q

What is the innervation of the gastrocnemius?

A

The tibial nerve (S1-S2)

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5
Q

What is the action of the soleus?

A

It plantar flexes the ankle

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6
Q

What is the proximal attachment of the soleus?

A

The posterior surface of the head of the fibula, the superior quarter of the posterior surface of the fibula, the soleal line, and the medial border of the tibia

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7
Q

What is the distal attachment of the soleus?

A

The posterior surface of the calcaneus via the calcaneal tendon

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8
Q

What is the innervation of the soleus?

A

The tibial nerve (S1-S2)

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9
Q

What is the action of the plantaris?

A

It weakly assists the gastrocnemius in plantar flexing the ankle

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10
Q

What is the proximal attachment of the plantaris?

A

The inferior end of the lateral supracondylar line of the femur and oblique popliteal ligament

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11
Q

What is the distal attachment of the plantaris?

A

The posterior surface of the calcaneus via the calcaneal tendon

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12
Q

What is the innervation of the plantaris?

A

The tibial nerve (S1-S2)

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13
Q

What is the action of the flexor digitorum longus?

A

It flexes the lateral four digits and plantarflexes the ankle

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14
Q

What is the proximal attachment of the flexor digitorum longus?

A

The medial part of the posterior surface of the tibia inferior to the soleal line and by a broad tendon of the fibula

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15
Q

What is the distal attachment of flexor digitorum longus?

A

The bases of the distal phalanges of the lateral four digits

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16
Q

What is the innervation of the flexor digitorum longus?

A

The tibial nerve (S2-S3)

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17
Q

What is the action of the flexor hallucis longus?

A

It flexes the great toe at all joints and weakly plantar flexes the ankle

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18
Q

What is the proximal attachment of the flexor hallucis longus?

A

The inferior 2/3 of the posterior surface of the fibula and inferior part of the interosseous membrane

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19
Q

What is the distal attachment of the flexor hallucis longus?

A

The base of the distal phalanx of the great toe (hallux)

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20
Q

What is the innervation of the flexor hallucis longus?

A

The tibial nerve (S2-S3)

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21
Q

What is the action of the tibialis posterior?

A

It plantarflexes the ankle and inverts the foot

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22
Q

What is the proximal attachment of the tibialis posterior?

A

The posterior surface of the tibia inferior to the soleal line, posterior surface of the fibula, and interosseous membrane

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23
Q

What is the distal attachment of the tibialis posterior?

A

Primarily to the tuberosity of the navicular, to the cuneiforms, cuboid, and bases of the 2nd-4th metatarsals.

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24
Q

What is the innervation of the tibialis posterior?

A

The tibial nerve (L4-L5)

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25
What is the action of the popliteus?
It weakly flexes the knee and unlocks it by laterally rotating the femur on the fixed tibia
26
What is the proximal attachment of the popliteus?
The lateral surface of the lateral condyle of the femur and the lateral meniscus
27
What is the distal attachment of the popliteus?
The posterior surface of the tibia, superior to the soleal line
28
What is the innervation of the popliteus?
The tibial nerve (L4-S1)
29
What is the action of the tibialis anterior?
It dorsiflexes the ankle and inverts the foot
30
What is the proximal attachment of the tibialis anterior?
The lateral condyle and superior 2/3 of the lateral surface of the tibia and interosseous membrane
31
What is the distal attachment of the tibialis anterior?
The inferior and medial surfaces of the medial cuneiform and base of the 1st metatarsal
32
What is the innervation of the tibialis anterior?
The deep fibular nerve (L4-L5)
33
What is the action of the extensor digitorum longus?
It extends the lateral four digits and dorsiflexes the ankle
34
What is the proximal attachment of the extensor digitorum longus?
The lateral condyle of the tibia and superior 2/3 of the anterior surface of the fibula and interosseous membrane
35
What is the distal attachment of the extensor digitorum longus?
The middle and distal phalanges of the lateral four digits
36
What is the innervation of the extensor digitorum longus?
The deep fibular nerve (L5-S1)
37
What is the action of the extensor hallucis longus?
It extends the great toe and dorsiflexes the ankle
38
What is the proximal attachment of the extensor hallucis longus?
The middle part of the anterior surface of the fibula and interosseous membrane
39
What is the distal attachment of the extensor hallucis longus?
The dorsal aspect of the base of the distal phalanx of the great toe
40
What is the innervation of the extensor hallucis longus?
The deep fibular nerve (L5-S1)
41
What is the action of the fibularis tertius?
It dorsiflexes the ankle and everts the foot
42
What is the proximal attachment of the fibularis tertius?
The inferior 1/3 of the anterior surface of the fibula and interosseous membrane
43
What is the distal attachment of the fibularis tertius?
The dorsum of the base of the 5th metatarsal
44
What is the innervation of the fibularis tertius?
The deep fibular nerve (L5-S1)
45
What is the action of the fibularis brevis?
It everts the foot and weakly plantarflexes the ankle
46
What is the proximal attachment of the fibularis brevis?
The middle part of the lateral surface of the fibula
47
What is the distal attachment of the fibularis brevis?
The dorsal surface of the tuberosity of the base of the 5th metatarsal
48
What is the innervation of the fibularis brevis ?
The superficial fibular nerve (L5-S2)
49
What is the action of the fibularis longus?
It everts the foot and weakly plantar flexes the ankle
50
What is the proximal attachment of the fibularis longus?
The fibular head and superior 2/3 of the lateral surface of the fibula
51
What is the distal attachment of the fibularis longus?
The medial cuneiform and the base of the 1st metatarsal
52
What is the innervation of the fibularis longus?
The superficial fibular nerve (L5-S2)
53
What is the action of the abductor hallucis?
It abducts and flexes the great toe
54
What is the proximal attachment of the abductor hallucis?
The medial tubercle of the tuberosity of the calcaneus, flexor retinaculum, and plantar aponeurosis
55
What is the distal attachment of the abductor hallucis?
The medial side of the base of the proximal phalanx of the great toe
56
What is the innervation of the abductor hallucis?
The medial plantar nerve (S2-S3)
57
What is the action of the flexor digitorum brevis?
It flexes the lateral four digits
58
What is the proximal attachment of the flexor digitorum brevis?
The medial tubercle of the tuberosity of the calcaneus, plantar aponeurosis, and intermuscular septa
59
What is the distal attachment of the flexor digitorum brevis?
Both sides of the middle phalanges of the lateral four digits
60
What is the innervation of the flexor digitorum brevis?
The medial plantar nerve (S2-S3)
61
What is the action of the abductor digiti minimi?
It abducts and flexes the 5th digit
62
What is the proximal attachment of the abductor digiti minimi?
The medial and lateral tubercles of the tuberosity of the calcaneus, plantar aponeurosis, and intermuscular septa
63
What is the distal attachment of the abductor digiti minimi?
The lateral side of the base of the proximal phalanx of the 5th digit
64
What is the innervation of the abductor digiti minimi?
The lateral plantar nerve (S2-S3)
65
What is the action of the quadratus plantae?
It assists the flexor digitorum longus in flexing the lateral four digits
66
What is the proximal attachment of the quadratus plantae?
The medial surface and lateral margin of the plantar surface of the calcaneus
67
What is the distal attachment of the quadratus plantae?
The posterolateral margin of the tendon of the flexor digitorum longus
68
What is the innervation of the quadratus plantae?
The lateral plantar nerve (S2-S3)
69
What is the action of the lumbricals?
It flexes the proximal phalanges and extends the middle and distal phalanges of the lateral four digits
70
What is the proximal attachment of the lumbricals?
The tendons of the flexor digitorum longus
71
What is the distal attachment of the lumbricals?
The medial aspect of the expansion over the lateral four digits
72
What is the innervation of the lumbricals for the medial one and the lateral three?
Medial one: Medial plantar nerve (S2-S3). Lateral one: Lateral plantar nerve (S2-S3)
73
What is the action of the flexor hallucis brevis?
It flexes the proximal phalanx of the 1st digit
74
What is the proximal attachment of the flexor hallucis brevis?
The plantar surface of the cuboid and lateral cuneiform
75
What is the distal attachment of the flexor hallucis brevis?
Both sides of the base of the proximal phalanx of the 1st digit
76
What is the innervation of the flexor hallucis brevis?
The medial plantar nerve (S2-S3)
77
What is the action of the adductor hallucis ?
It adducts the 1st digit
78
What is the proximal attachment of the adductor hallucis for the oblique head and transverse head?
Oblique head: bases of the 2nd-4th metatarsals. Transverse head: plantar ligaments of the 3rd-5th metatarsophalangeal joints
79
What is the distal attachment of the adductor hallucis?
The tendons of both heads attached to the lateral side of the base of the proximal phalanx of the 1st digit
80
What is the innervation of the adductor hallucis?
Deep branch of the lateral plantar nerve (S2-S3)
81
What is the action of the flexor digiti minimi brevis?
It flexes the proximal phalanx of the 5th digit
82
What is the proximal attachment of the flexor digiti minimi brevis?
The base of the 5th metatarsal
83
What is the distal attachment of the flexor digiti minimi brevis ?
The base of the proximal phalanx of the 5th digit
84
What is the innervation of the flexor digiti minimi brevis?
The superficial branch of the lateral plantar nerve (S2-S3)
85
What is the action of the plantar interossei?
It adducts the 3rd-5th digits and flexes the MTP joints
86
What is the proximal attachment of the plantar interossei?
The medial sides and bases of the 3rd-5th metatarsals
87
What is the distal attachment of the plantar interossei?
The medial sides of the bases of the proximal phalanges of the 3rd-5th digits
88
What is the innervation of the plantar interossei?
The lateral plantar nerve (S2-S3)
89
What is the action of the dorsal interossei?
It abducts the 2nd-4th digits and flexes the MTP joints
90
What is the proximal attachment of the dorsal interossei?
The adjacent sides of all of the metatarsals (1-5)
91
What is the distal attachment of the dorsal interossei for the 1st and 2nd-4th?
1st: Medial side of the proximal phalanx of the 2nd digit. 2nd-4th: Lateral sides of the 2nd-4th digits.
92
What is the innervation of the dorsal interossei ?
Lateral plantar nerve (S2-S3)