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Thigh Muscles Flashcards

1
Q

knee joint

A

essentially only capable of flexion and extension (technically a tiny bit of medial and lateral rotation too)

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2
Q

patella

A

knee bone, (sesamoid bone)

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3
Q

lateral collateral ligament

A

cord-like ligament on the lateral (outside) of your knee, attached to the head of fibula

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4
Q

medial collateral ligament

A

in the medial (inside) of knee, runs from the medial epicondyle of femur to the medial condyle of tibia; major function is to resist vagus forces on the knee

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5
Q

anterior cruciate ligament

A

pulled tight in extension; in crossed formation with posterior cruciate ligament

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6
Q

posterior cruciate ligament

A

pulled tight in flexion; attached further back on tibia and further forward on femur

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7
Q

patellar ligament

A

distal portion of the common tendon of the quadriceps femoris which goes from the patella to the tibial tuberosity

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8
Q

medial meniscus

A

more crescent shaped piece of cartilage that spans the knee joint medially

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9
Q

lateral meniscus

A

more circular shaped piece of cartilage that spans the knee joint laterally (covers more surface)

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10
Q

CLINICAL: meniscus tears

A

act as shock absorbers to stabilize the knee; occur when the knee is suddenly twisted while the foot is planted on the ground

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11
Q

note that: the lateral meniscus is…

A

not in contact with the lateral collateral ligament

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12
Q

note that: the medial meniscus attaches…

A

to the medial collateral ligament

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13
Q

CLINICAL: anterior cruciate ligament

A

is taut when the knee is extended, so a blow to the extended knee can tear it

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14
Q

CLINICAL: posterior cruciate ligament

A

is taut when the knee is flexed, so ur isn’t injured very often (hard to hyperflex)

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15
Q

CLINICAL: “unhappy triad”/ blown knee

A

injured: anterior cruciate ligament, medial collateral ligament, and medial meniscus; usually due to a lateral blow to an extended knee when foot is fixed to the ground

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16
Q

illiopsoas

A

refers to the joined psoas and the iliacus muscles; the muscles are separated in the abdomen but merged in the thigh; joins to femur at the lesser trochanter (strongest flexor of the hip)

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17
Q

proximal attachment of iliopsoas

A

psoas major: lumbar vertebrae; iliacus: medial surface of the ilium

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18
Q

distal attachment of iliopsoas

A

lesser trochanter of the femur

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19
Q

action of iliopsoas

A

flexes hop, laterally/externally rotates hip

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20
Q

innervation of iliopsoas

A

femoral n.

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21
Q

blood supply of iliopsoas

A

medial femoral circumflex a.

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22
Q

sartorius

A

(anterior compartment) longest muscle in the human body; long, thin superficial muscle that runs down the length of the thigh

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23
Q

proximal attachment of sartorius

A

ASIS

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24
Q

distal attachment of sartorius

A

anterormedial surface of proximal tibia

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25
action of sartorius
flexion, lateral rotation, and abduction of hip; flexion of knee
26
innervation of sartorius
femoral n.
27
blood supply of sartorius
femoral a.
28
quadriceps femoris
large muscle group that includes the rectus femoris, vastus medialis, vastus lateralis, and vastus intermedius on the front of the thigh; all 4 attach to the patella via quadricep tendon
29
rectus femoris
anterior compartment of thigh
30
proximal attachment of rectus femoris
anterior inferior illiac spine
31
distal attachment of rectus femoris
patellar ligament> tibial tuberosity
32
action of rectus femoris
knee extension; hip flexion
33
innervation of rectus femoris
femoral nerve
34
blood supply of rectus femoris
lateral circumflex femoral artery
35
vastus lateralis
anterior compartment of thigh
36
proximal attachment of vastus lateralis
greater trochanter of femur
37
distal attachment of vastus lateralis
patellar ligament> tibial tuberosity
38
action of vastus lateralis
extension of knee
39
innervation of vastus lateralis
femoral nerve
40
blood supply of vastus lateralis
lateral circumflex femoral artery
41
vastus medialis
anterior compartment of thigh
42
proximal attachment of vastus medialis
medial side of femur
43
distal attachment of vastus medialis
patellar ligament> tibial tuberosity
44
action of vastus medialis
femoral nerve
45
blood supply of vastus medialis
femoral artery
46
vastus intermedius
anterior compartment of thigh
47
proximal attachment of vastus intermedius
anterior surface of the femur
48
distal attachment of vastus intermedius
patellar ligament> tibial tuberosity
49
action of vastus intermedius
extends the knee
50
innervation of vastus intermedius
femoral nerve
51
blood supply of vastus intermedius
femoral artery
52
gracilis
(medial compartment of thigh) “odd ball” most superficial muscle; thin and flattened, broad above, narrow and tapering below
53
proximal attachment of gracilis
near pubic symphosis
54
distal attachment of gracilis
anteriomedial side of proximal tibia
55
action of gracilis
flexes, medially rotates, and adducts hop; flexes knee
56
innervation of gracilis
obturator nerve
57
blood supply of gracilis
medial circumflex femoral artery
58
adductor longus
(medial compartment of thigh) skeletal muscle
59
proximal attachment of adductor longus
near pubic symphosis
60
distal attachment of adductor longus
linea aspera of femur
61
action of adductor longus
adducts thigh; flexes hip
62
innervation of adductor longus
obturator nerve
63
blood supply of adductor longus
deep femoral artery
64
adductor brevis
(medial compartment of thigh) situated immediately deep to the pectin is and adductor longus
65
proximal attachment of adductor brevis
near pubic symphysis
66
distal attachment of adductor brevis
lesser trochanter and linea aspera of femur
67
action of adductor brevis
adduction of thigh
68
innervation of adductor brevis
obturator nerve
69
blood supply of adductor brevis
deep femoral artery
70
adductor magnus
(medial compartment of thigh) large triangular muscle situated on medial side of thigh
71
proximal attachment of adductor magnus
near pubic symphysis
72
distal attachment of adductor magnus
linea aspera of femur
73
action of adductor magnus
adduction of hip, flexion of hip, extension of hip
74
innervation of adductor magnus
obturator nerve, tibial nerve
75
blood supply of adductor magnus
deep femoral artery
76
biceps femoris
(posterior compartment of thigh) 2 parts, one of which (the long head) forms part of the hamstring muscle group
77
proximal attachment of biceps femoris
pelvis-ishial tuberosity; femur- linea aspera
78
distal attachment of biceps femoris
head of fibula
79
action of biceps femoris
flexes knee, rotates knee laterally when knee is flexed
80
innervation of biceps femoris
sciatic nerve; long head: tibial n, short head; common fibular nerve
81
blood supply of biceps femoris
deep artery of thigh
82
semitendinosus
(posterior compartment of thigh)
83
proximal attachment of semitendinosus
ishial tuberosity
84
distal attachment of semitendinosus
pesanerinus-anteromedial surface of proximal tibia
85
action of semitendinosus
flexes knee; extends hip
86
innervation of semitendinosus
sciatic N (tibial)
87
blood supply of semitendinosus
deep artery of thigh
88
semimembranous
(posterior compartment of thigh) medial of the 3; flat tendon and deep to semitendinosus
89
proximal attachment of semimembranosus
ishial tuberosity
90
distal attachment of semimembranosus
medial surface of proximal tibia
91
action of semimembranosus
flexes knee; extends hip
92
innervation of semimembranosus
sciatic n (tibial n)
93
blood supply of semimembranosus
deep artery of thigh
94
pes anserinus
common attachment leads to flexion of the knee; sartorius (anterior), gracilis (medial), semitendinosus (posterior)

Anatomy (16 decks)

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