Muscles of the Trunk and Lower Limbs

Question 1

the anterior superior iliac spine is a shared attachment site for (2)

Answer 1

sartorius, tensor fasciae latae

Question 2

the ischial tuberosity is a shared attachment site for (3)

Answer 2

semitendinosus, semimembranosus, long head biceps femoris

Question 3

the iliac crest is a shared attachment site for (3)

Answer 3

gluteus medius, gluteus maximus, tensor fasciae latae

Question 4

the iliotibial band is a shared attachment site for (2)

Answer 4

gluteus maximus, tensor fasciae latae

Question 5

the lesser trochanter of the femur is a shared attachment site for (2)

Answer 5

iliacus, psoas major

Question 6

the greater trochanter of the femur is a shared attachment site for (3)

Answer 6

gluteus minimus, gluteus medius, piriformis

Question 7

the tibial tubersoity is a shared attachment site for (6)

Answer 7

sartorius, quadriceps femoris group

Question 8

the patella is a shared attachment site for (4)

Answer 8

quadriceps femoris group

Question 9

The quadriceps femoris group includes (4)

Answer 9

rectus femoris, vastus lateralis, vastus medialis, vastus intermedius

Question 10

the calcaneus is a shared attachment site for (2)

Answer 10

gastrocnemius, soleus

Question 11

the proximal medial surface of the tibia is a shared attachment site for (3)

Answer 11

gracilis, semitendinosus, sartorius

Question 12

erector spinae groups (3)

Answer 12

iliocostalis, longissimus, spinalis

Question 13

erector spinae groups action

Answer 13

one side: laterally flexes
vertebral column to the same
side as the contracting muscle, both sides: extends vertebral
column

Question 14

quadratus lumborum action

Answer 14

one side: laterally flexes
lumbar portion of vertebral
column, both sides: extends lumbar
portion of vertebral column

Question 15

external intercostals action

Answer 15

elevate ribs during normal inspiration
(inhalation)

Question 16

internal intercostals action

Answer 16

depress ribs during forced exhalation

Question 17

diaphragm action

Answer 17

expands the thoracic cavity during normal inspiration

Question 18

external oblique, internal oblique and transverse abdominus action

Answer 18

both sides: compress abdominal wall &
flex vertebral column, one side: laterally flex vertebral column & rotate torso to opposite side

Question 19

rectus abdominis action

Answer 19

compresses abdominal wall & flexes
vertebral column

Question 20

significance of the inguinal ligament

Answer 20

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

Question 21

significance of the linea alba

Answer 21

connective tissue connecting left and right rectus abdominis muscles

Question 22

rectus femoris orgin; insertion

Answer 22

anterior inferior iliac spine of ilium;

Question 23

sartorius origin

Answer 23

anterior superior iliac spine of ilium

Question 24

iliacus origin

Answer 24

iliac fossa of ilium

Question 25

psoas major origin

Answer 25

T12–L5 vertebrae

Question 26

gracilis origin

Answer 26

inferior ramus & body of pubis

Question 27

gracilis insertion

Answer 27

proximal medial surface of tibia

Question 28

semitendinosus insertion

Answer 28

proximal medial surface of the tibia

Question 29

semimembranosus insertion

Answer 29

medial condyle of tibia

Question 30

semitendinosus and semimembranosus action

Answer 30

extends thigh, flexes and medially rotates leg

Question 31

long head of biceps femoris origin

Answer 31

ischial tuberosity of ischium

Question 32

long head of biceps femoris action

Answer 32

extends thigh, flexes leg

Question 33

short head of biceps femoris origin

Answer 33

linea aspera of femur

Question 34

short head of biceps femoris action

Answer 34

flexes and laterally rotates leg

Question 35

tensor fasciae latae action

Answer 35

abducts, flexes, & medially rotates thigh

Question 36

tensor fasciae latae insertion

Answer 36

iliotibial band

Question 37

gluteus maximus origin

Answer 37

iliac crest of ilium, sacrum, coccyx

Question 38

gluteus maximus insertion

Answer 38

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

Question 39

gluteus minimus, gluteus medius action

Answer 39

abducts & medially rotates thigh

Question 40

gluteus minimus origin

Answer 40

lateral surface of ilium

Question 41

piriformis origin

Answer 41

anterolateral surface of sacrum

Question 42

significance of the iliotibial band

Answer 42

thick band of fascia continuous with tensor fasciae latae

Question 43

tibialis anterior origin

Answer 43

lateral condyle and proximal shaft of the tibia

Question 44

tibialis anterior insertion

Answer 44

metatarsal I, medial cuneiform bone

Question 45

muscles that dorsiflex the foot (4)

Answer 45

tibialis anterior, extensor hallucis
longus and extensor digitorum
longus action

Question 46

muscles that plantar flex the foot (6)

Answer 46

gastrocnemius, soleus, tibialis posterior, flexor hallucis longus, fibularis longus and fibularis brevis

Question 47

gastrocnemius origin

Answer 47

lateral and medial condyles of femur

Question 48

soleus origin

Answer 48

head & proximal shaft of fibula, medial border of tibia

Question 49

popliteus action

Answer 49

flexes leg, medially rotates tibia

Question 50

Muscles that adduct the thigh (5)

Answer 50

gracilis, pectineus, adductor longus, adductor brevis, adductor magnus action

Question 51

Muscles that laterally rotate the thigh (4)

Answer 51

gluteus maximus, piriformis, sartorius, iliacus, psoas major

Question 52

Muscles that extend the leg (4)

Answer 52

vastus lateralis, vastus medialis, vastus intermedius, rectus femoris