More Muscles (Lower bod)

Question 1

Iliocostalis group

Answer 1

one side: laterally flexes vertebral column to the same side as the contracting muscle

both sides: extends vertebral column

Question 2

longissimus group

Answer 2

one side: laterally flexes vertebral column to the same side as the contracting muscle

both sides: extends vertebral column

Question 3

spinalis group

Answer 3

one side: laterally flexes vertebral column to the same side as the contracting muscle

both sides: extends vertebral column

Question 4

quadratus lumborum

Answer 4

one side: laterally flexes lumbar portion of vertebral column

both sides: extends lumbar portion of vertebral column

Question 5

external interncostals

Answer 5

elevates ribs during normal inspiration

Question 6

internal intercostals

Answer 6

depress ribs during forced exhalation

Question 7

diagphram

Answer 7

expands the thoracic cavity during normal inspiration

Question 8

external oblique

Answer 8

both sides: compress abdominal wall/flex vertebral column

one side: laterally flex vertebral column/rotate torso to opposite side

Question 9

transverse abdominis

Answer 9

both sides: compress abdominal wall/flex vertebral column

one side: laterally flex vertebral column/rotate torso to opposite side

Question 10

rectus abdominus

Answer 10

compresses abdominal wall and flexes vertebral column

Question 11

inguinal ligament

Answer 11

formed by aponeurosis of the external oblique; contains tissues coursing from to trunk to the lower limb

Question 12

linea alba

Answer 12

CT connecting L and R rectus abdominis muscles

Question 13

rectus femoris

Answer 13

origin: anterior inferior illiac spine of ilium

insertion: patella via quadriceps tendon/tibial tuberosity via patellar ligament

flexes/extends thigh

Question 14

vastus lateralis

Answer 14

insertion: patella via quadriceps tendon/tibial tuberosity via patellar ligament

extends leg

Question 15

vastus medialis

Answer 15

insertion: patella via quadriceps tendon/tibial tuberosity via patellar ligament

extends leg

Question 16

vastus intermedius

Answer 16

insertion: patella via quadriceps tendon/tibial tuberosity via patellar ligament

extends leg

Question 17

satorious

Answer 17

origin: anterior superior iliac spine of the ilium

insertion: tibial tuberosity, medial side via pes anserinus tendon

flexes, abducts, and laterally rotates thigh

Question 18

iliacus

Answer 18

origin: iliac fossa of ilium

insertion: lesser trochanter of femur
flexes thigh

Question 19

psoas major

Answer 19

origin: T12-L5 vertebrae

insertion: lesser trochanter of femur

flexes thigh

Question 20

pectineus

Answer 20

adducts thigh

Question 21

adductor longus

Answer 21

adducts thigh

Question 22

adductor brevis

Answer 22

adducts thigh

Question 23

adductor magnus

Answer 23

adducts thigh

Question 24

gracillis

Answer 24

origin: inferior ramus/body of pubis

insertion: proximal medial surface of tibia via pes anserinus tendon

flexes leg

Question 25

semitendinousus

Answer 25

origin: ischial tuberosity of ischium

insertion proximal medial surface of tibia via pes anserinus tendon

extends thigh

Question 26

semimembranosus

Answer 26

origin: ischial tuberosity of ischium

insertion: medial condyle of tibia

extends thigh

Question 27

biceps femoris (long)

Answer 27

origin: ischial tuberosity of ischium

insertion: head of fibula and lateral condyle of tibia

extends thigh

Question 28

biceps femoris (short)

Answer 28

origin: linea aspera of femur

insertion: head of fibula and lateral condyle of tibia

flees and laterally rotates leg

Question 29

tensor fasciae latae

Answer 29

orgin: iliac crest/anterior superior iliac spine of ilium

insertion: iliotibial tract

medially rotates thigh

Question 30

gluteus maximus

Answer 30

origin: iliac crest of ilium

insertion: iliotibial tract, linea aspera of femur, gluteal tuberosity of femur

extends and laterally rotates thigh

Question 31

gluteus medius

Answer 31

origin: iliac crest of ilium

insertion: greater trochanter of femur

medially rotates thigh

Question 32

gluteus minimus

Answer 32

origin: lateral surface of ilium

insertion: greater trochanter of femur

medially rotates thigh

Question 33

piriformis

Answer 33

origin: anterolateral surface of sacrum

laterally rotates thigh

Question 34

iliotibial tract/band

Answer 34

thick band of fascia continuous w tensor fascia latae

Question 35

tibialis anterior

Answer 35

origin: lateral condyle/proximal shaft of tibia

insertion: metatarsal I and medial cuneiform bone

dorsiflexes foot

Question 36

extensor hallucis longus

Answer 36

extends hallux

Question 37

extensor digitorum longus

Answer 37

extends distal and middle phalanges 2-5

Question 38

fibularis longus

Answer 38

everts foot

Question 39

fibularis brevis

Answer 39

everts foot

Question 40

gastrocnemius

Answer 40

origin: lateral and medial condyles of femur

insertion: calcaenous via achilles tendon

flexes leg at knee joint

Question 41

soleus

Answer 41

origin: head and proximal shaft of fibula/medial border of tibia

insertion: calcaneus via achilles tendon

plantar flexes foot

Question 42

tibialis posterior

Answer 42

plantar flexes foot

Question 43

popliteus

Answer 43

flexes leg

Question 44

flexor digitorum longus

Answer 44

plantar flexes foot

Question 45

flexor hallucis longus

Answer 45

flexes MP and IP joints of hallux