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Anatomy LAB > Legs and Abs Muscles > Flashcards

Legs and Abs Muscles Flashcards

(90 cards)

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1
Q

Gluteus maximus

A

largest of the three gluteal muscles and one of the largest muscles in the body

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2
Q

What is the origin point of gluteus maximus?

A

ilium, sacrum, coocyx

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3
Q

What is the insertion point of gluteus maximus?

A

gluteal tuberosity of femur

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4
Q

What is the action of gluteus maximus?

A

Major extensor of thigh; laterally rotates thigh

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5
Q

Gluteus medius

A

located deep to the gluteus maximus

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6
Q

What is the origin point of gluteus medius?

A

ilium

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7
Q

What is the insertion point of the gluteus medius?

A

greater trochanter of the femur

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8
Q

What is the action of gluteus medius?

A

Abduction and medial thigh rotation

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9
Q

Tensor fasciae lateae

A
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10
Q

What is the origin point of tensor fasciae lateae?

A

iliac crest and anterior superior iliac spine

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11
Q

What is the insertion point of tensor fasciae latae?

A

iliotibial tract - the fascia lata that ensheathes all the muscles of the thigh

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12
Q

What is the action of tensor fasciae latae?

A

steadies trunk on thigh

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13
Q

Biceps femoris

A

two headed muscle that attaches to the lateral side of the leg

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14
Q

What is the origin point of biceps femoris?

A

ischial tuberosity and femur

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15
Q

What is the insertion point of biceps femoris?

A

fibula

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16
Q

What is the action of biceps femoris?

A

extends thigh, flexes knee; laterally rotates thigh

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17
Q

Semimembranosus

A

deep to the semitendinosus; extends from the ischial tuberosity to the medial side of the leg

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18
Q

What is the origin point of semimembranosus?

A

ischial tuberosity

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19
Q

What is the insertion point of semimembranosus?

A

medial condyle of tibia

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20
Q

What is the action of semimembranosus?

A

extends thigh. flexes knee; medially rotates thigh

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21
Q

Semitendinosis

A

superficial to the semimembranosus and is attached to the medial leg

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22
Q

Vastus lateralis

A

forms the anterolateral surface of the thigh

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23
Q

What are the origin points of vastus lateralis?

A

greater trochanter and linea aspera

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24
Q

What are the insertion points of vastus lateralis?

A

patella and tibial tuberosity

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25
What are the actions of vastus lateralis?
extends knee
26
Rectus femoris
located on the anterior surface of the thigh; this muscle proximally attaches the os coxae
27
What are the origin points of rectus femoris?
anterior inferior iliac spine
28
What are the insertion points of rectus femoris?
patella and tibial tuberosity
29
What are the actions of rectus femoris?
extends knee and flexes thigh
30
Vastus medialis
forms the anteromedial surface of the thigh
31
What are the origin points of vastus medialis?
linea aspera
32
What are the insertion points of vastus medialis?
patella and tibial tuberosity
33
What are the actions of vastus medialis?
extends knee
34
Iliopsoas
a collective of psoas major and iliacus to merge and attach to the femur; work synergistically to flex the thigh
35
Sartorius
long, thin muscle that crosses over the anterior thigh anf helps flex the thigh
36
What are the origin points of sartorius?
anterior superior iliac spine
37
What are the insertion points of sartorius?
tibia
38
What are the actions of the sartorius?
flexes and laterally rotates thigh; flexes knee
39
Gracilis
one of the six muscles located in the medial compartment of the thigh
40
What are the origin points of gracilis?
pubis
41
What are the insertion points of gracilis?
medial tibia
42
What are the actions of gracilis?
flexes knee; adducts and flexes thigh
43
Pectineus
one of the six muscles located in the medial compartment of the thigh
44
What are the origin points of pectineus?
pubis
45
What are the insertion points of pectineus?
posterior femur
46
What are the actions of pectineus?
adducts, flexes thigh
47
Adductor magnus
one of six muscles that are located in the medial compartment of the thigh
48
What are the origin points of adductor magnus?
ischium and pubis
49
What are the insertion points of adductor magnus?
linea aspera of femur
50
What are the actions of adductor magnus?
adducts, flexes and medially rotates thigh
51
Adductor femoris
same as adductor magnus but in cats i'm assuming
52
Tibialis anterior
primary dorsiflexor of the foot at the ankle and is attached to the medial plantar side of the foot
53
Wha are the origin points of tibialis anterior?
lateral condyle and tibial shaft
54
What are the insertion points of tibialis anterior?
medial cuneiform and first metatarsals
55
What are the actions of tibialis anterior?
prime mover of dorsiflexion; inverts foot
56
Fibularis longus
long, flat muscle that is a superficial lateral muscle that covers the fibula
57
What are the origin points of fibularis longus?
head of fibula
58
What are the insertion points of fibularis longus?
first metatarsal and medial cuneiform
59
What are the actions of fibularis longus?
plantarflexion and foot eversion
60
Gastrocnemius
most superficial muscle of the superfical later of posterior compartment; has two thick muscle bellies, the lateral head and the medial head, that collectively form the prominence known as the calf
61
What are the origin points of gastrocnemius?
medial and lateral condyles of femur
62
What are the insertion points of gastrocnemius?
via calcaneal (achilles) tendon onto calcaneus
63
What are the actions of gastrocnemius?
plantarflexes foot; flexes lower leg
64
Soleus
broad, flat muscle deep to teh gastrocnemius that resembles a flat fish
65
What are the origin points of the soleus?
head of fibula and tibula
66
What are the insertion points of the soleus?
calcaneal tendon onto calcaneous
67
What are the actions of soleus?
plantarflexes foot
68
Rectus abdominus
these muscles and intersections are referred to as six pack abs
69
What are the origin points of rectus abdominus?
superior surface of pubis near symphysis
70
What are the insertion points of rectus abdominis?
costal cartilages of ribs 5-7 and xiphoid process
71
What are the actions of rectus abdominis?
flexes vertebral column
72
External oblique
located on the outer surface on the sides of the abdomen
73
What are the origin points of the external oblique?
inferior 8 ribs
74
What are the insertion points of the external oblique?
linea alba and iliac crest
75
What are the actions of the external oblique?
flexion and rotation of vertebral column; lateral flexion
76
Internal oblique
an abdominal muscle in the abdominal wall that lies below the external oblique muscle and just above the transverse abdominal muscle.
77
What are the origin points of the internal oblique?
lumbar fascia; inguinal ligamen; iliac crest
78
What are the insertion points of the internal oblique?
inferior 4 ribs; linea alba; pubic crest
79
What are the actions of the internal oblique?
flexion and rotation of vertebral column; lateral flexion
80
Transversus abdominis
broad paired muscular sheet found on the lateral sides of the abdominal wall
81
What are the origin points of transversus abdominis?
iliac crest, cartilages of inferior 6 ribs
82
What are the insertion points of transversus abdominis?
linea alba and pubic crest
83
What are the actions of transversus abdominis?
flexion of vertebral column; lateral flexion
84
What is the origin point of semitendinosus?
ischial tuberosity
85
What is the insertion point of the semitendinosus?
proximal medial surface of tibia
86
What is the action of the semitendinosus
extends thigh, flexes knee; medially rotates thigh
87
Vastus intermedius
positioned deep to the rectus femoris and sandwiched between the other two vastus muscles
88
What are the origin points of vastus intermedius?
anterolateral femur
89
What are the insertion points of vastus intermedius?
patella and tibial tuberosity
90
What are the actions of vastus intermedius?
extends knee

Anatomy LAB (28 decks)

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