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ANATOMY exam3 > muscles OIA > Flashcards

muscles OIA Flashcards

1
Q

Tibialis anterior

A

O: lateral tibia, interosseous membrane and deep crural fascia

I: medial cuneiform, base of 1st met

N: deep peroneal

Function: Dorsiflex and invert, supinator

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2
Q

EHL

A

O: ANterior surface of fibula
I: base of distal phalanx of 1st digit , w/ additional slip of insertion into base of 1st met
N: deep peroneal

F: Extension of 1st MPJ, dorsiflexion and supination

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3
Q

Extensor hallucis capsularis

A

O: arise as extension of extensor hallucis longus tendon
I: capsule of 1st MPJ

F: lift capsule out of joint to prevent entrapment of capsule

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4
Q

EDL

A

O: Lateral condyle of tibia, ant fib head and surface of fibula

I: extensor expansion of 2-5th digits

N: deep peroneal
F: extension of MPJ of four lateral digits
DOrsiflex and EVERT ankle, pronation

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5
Q

Peroneus tertius

A

O: ant surface of fibula
I: base of 5th met
N: deep peroneal
F: dorsiflex and evert ankle

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6
Q

Peroneus Longus

A

O: head and upper lat surface of fibula, laterla tibial condyle

I: lateral side of base of 1st met and lateral side of medial cuneiform

F: plantarflex and evert ankle, pronation

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7
Q

peroneus brevis

A

O: lateral surface of fibula

I: styloid process of 5th met
A:plantarflex and evert ankle, pronation

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8
Q

gastrocnemus

A

O: medial and lateral head: medail/lateral condyle

I: Central part of posterior surface of calcanues

N: plantarflex ankle, supinate, FLEX knee

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9
Q

Soleus

A

O: posterior surface of head and body of fibula from soleal line. middle 2/3 tibia

I: calcaneus
N: tibial n
F: plantarflex ankle

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10
Q

plantaris

A

O: lateral supracondylar line of femur and oblique popliteal lig

I: medial to achilles tendon
A: plantarflex ankle, flex knee

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11
Q

Popliteus

A

O: lateral condyle of femur, arcuate popliteal ligament and lateral meniscus

I: proximal to soleal line on tibia 
A: flexor and rotator @ knee
UNLOCKS knee 
weight bearing: rotates thigh laterally 
nonweight bearing: rotates leg medially
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12
Q

Psoas major O/I/A/ nerve

A

O: transverse processes of all lumbar vertebrae
I: apex of lesser trochanter
A: flex @ hip and flex lumbar spine

N: L2-L3

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13
Q

Iliacus:

A

O: iliac fossa, iliac crest, ASIS, AIIS, superolateral portion of sacrum
I: base of lesser trochanter of femur

A: flexion @ hip

N: femur

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14
Q

Gluteus maximus OIA/N

A

O: posterior gluteal line of ilium, posterior surface of sacrum and coccyx

I: superficial fibers–>IT BAND, deep fibers: gluteal tuberosity

A: extends, laterally rotate and ABduct thigh @ hip

N: inferior gluteal N

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15
Q

gluteus medius

A

O: between posterior and anterior gluteal line
I: oblique bony ridge on greater trochanter

A:laterally and medially rotates extended hip, ABduct thigh

muscle stabilize pelvis during locomotion

N: superior gluteal N

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16
Q

Gluteus minimus

A

O: between anterior and inferior gluteal line
I: anterior border of greater trochanter
A: ABductor of hip, medially rotate extended hip

stabilize pelvis during locomotion

17
Q

Tensor fascia latae

A

O: iliac crest, ASIS
I: lateral tibial condyle
A: hip flexor and medial rotator

N: superior gluteal n

18
Q

Piriformis

A

O: sacrum 1-4
I: superior border of greater trochanter

A: lateral rotator, abduct flexed hip, assist extension at hip

N: S1-S2, or just S2

19
Q

Obturator internus

A

O: superior and inferior pubic ramus, ischial ramus
I:medial surface of greater trochanter anterior to trochanteric fossa
A: lateral rotator, abduct flexed hip. extend hip

20
Q

Gemilli

A

O: outer surface of ischial spine(superior)
(inferior): upper part of ischial tuberosity
I: fusion with obturator internus into medial surface of greater trochanter
A: lateral rotator of hip

N:

inferior: n. quadraturs femoris
superior: n to obturator internus

21
Q

quadratus femoris

OIA/N, and what muscles is it between

A

between inferior gemmellus and upper fibers of adductor magnus

O: lateral edge of ischial tuberosity
I” quadrate tubercle of femur
n: L4-S1

A: ADducts and laterally rotate hip

22
Q

Obturator externus

A

O: ischium and pubis
I: trochanteric fossa of femur
A: ADDuct and laterally rotate hip (same as quad femoris)
N: POSTERIOR division of obturator nerve

23
Q

EDB OIA/ innervation

A

HAS ONLY 4 tendons!!!
O: tarsal sinus, interosseous talocalcaneal ligament, , frondiform ligament

I:
EHB: base of prox phalanx of 1st digit
EDB: lateral side (3 other tendons) of 2-4 of EDL

N: lateral terminal br of deep peroneal nerve

24
Q

abductor hallucis OIA/innervation

A

O: medial process of calcaneal tuberosity
I: medial side of the plantar surface of base of proximal phalanx of 1st digit (common with FHB)
some fibers may attach to tibial sesamoid

I: medial plantar nerve
Abduct 1st digit

25
Q

Flexor digitorum brevis

A

(lateral plantar vessels and nerves run deep to it)

O: Medial process of calcaneal tuberosity
I: middle phalanges of lateral 4 digits

innervation: medial plantar nerve
Function: flex PIPJ and MPJ

26
Q

abductor digit minimi

abductor os metatarsi digiti minimi

A

O: lateral and medial process of calcaneal tuberosity and from depression of lateral and medial processes of calcaneal tuberosity and from the depression.

I: lies in groove on plantar surface of 5th met/ inserts on lateral plantar side of base of proximal phalanx

F: abduct and FLEX 5th digit

I: lateral plantar nerve

insertion for accessory: base of 5th met

27
Q

quadratus plantae

what separates the head

A

long plantar ligament

O: larger medial head arrises from medial process, lateral head from lateral process

I: FDL

A: accessory flexor to straighten the pull of long flexor

Innervation: trunk of lateral plantar n

28
Q

2 tendons in 2nd layer

2 tendons in 4th

A

FHL and FDL:2nd layer

4th layer: peroneus longus
tib posterior tendon

29
Q

Lumbricals

A

O: FDL
1st lumbrical originate from MEDIAL sidte of the most medial tendon only
2-4 arise from adjacent sides
course SUPERFICIAL to deeptransverse metatarsal ligament

I: inserts on medial surface of extensor expansion

A: flex MPJ, extend IPJ

innervation
1st lumbrical: medial plantar nerve
2-4: deep branch of lateral plantar nerve

30
Q

FHB

A

O: lateral head: cuboid and lateral cuneiform
medial head: tendon of tibialis posterior

I: medial head inserts on medial side of plantar surface of base of proximal phalanx (common with abductor hallucis)
Lateral head: lateral side of of base of proximal phalanx) common with adductor hallucis

A: flex 1st mpj
I: medial plantar nerve

31
Q

Adductor hallucis

opponens hallucis muscle

A

O:
oblique head: base of 2-4 metatarsal and peroneus longus

transverse head: plantar plates, metatarsophalangeal ligaments

I: lateral side of base of prox phalanx of 1st digit

A: adduct 1st toe

innervation: deep branch of lateral plantar nerve

opponens hallucis muscle may insert into 1st met

32
Q

FDMB

A

O: plantar surface of base of 5th met, peroneus longus
I: plantar surface of prox phalanx of 5th dig with abductor digiti minimi
F: flex and ABDUCT 5th digit

I: superficial branch of lateral plantar nerve

33
Q

Plantar interossei

A

O: 3 plantar arise from base s and medial side of shaft of 3-5 met

I: each insert on medial side of base of proximal phalanges

I:
deep branch of lateral plantar nerve: 1st and 2nd interrosei,
superficial branch 3rd

Function: ADDUCT 3-5 digits

34
Q

Dorsal interossei

A

BIPENNATE MUSCLES!!!
O: arise from adjacentsides of met bones
I: base of proximal phalanx
1st doral interosseous to the medial side of 2nd, 2nd to the lateral side of 2nd digit, 3rd to lat side fo 3rd 4th to lat side of 4th dig

F: abductor

I: all but 4th dorsal interossi by deep branch of deep branch of lateral plantar nerve

4th by superficial branch of lateral plantaer nerve

ANATOMY exam3 (13 decks)

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