Unit 7 muscles of the inferior limb

Question 1

anterior muscles of the hip

Answer 1

this “group”of muscles includes only two large muscles bellies and they are so closely related that they are given a combined name- iliopsoas muscle

Question 2

iliopsoas muscle

Answer 2

located on the anterior aspect of the proximal thigh

Question 3

iliacus muscle

Answer 3

Origin: iliac fossa Insertion: lesser trochanter and adjacent body of the femur Action: flex coxal joint, rotate thigh lateral (externally)

Question 4

psoas major muscle

Answer 4

Origin: bodies of vertebrae T12-L5 Insertion: lesser trochanter of the femur bone Action: flex coxal joint, rotate thigh laterally (externally), flex the vertebrae joints in the lumbar region (weakly)

Question 5

posterior and lateral muscles of the hip

Answer 5

four muscles include the three gluteal muscles and the tensor fasciae latae muscle

Question 6

gluteus maximus muscle

Answer 6

Origin: bony sacrum, iliac crest, coccyx Insertion: proximolateral aspect of the body of the femur bone and iliotibial tract Action: extend coxal joint, rotate thigh laterally (externally) some adduction of inferior limb at coxal joint

Question 7

gluteus medius muscle

Answer 7

Origin: gluteal surface of the ilium Insertion: greater trochanter of the femur bone Action: abduct inferior limb at coxal joint, rotate thigh laterally (externally)

Question 8

gluteus minimus muscle

Answer 8

Origin: gluteal surface of the ilium Insertion: greater trochanter of the femur bone Action: abduct inferior limb at coxal joint

Question 9

tensor fasciae latae muscle

Answer 9

Origin: anterior superior iliac spine Insertion: lateral condyle of the tibia Action: flex coxal joint, medial rotation of thigh, abduct inferior limb at coxal joint

Question 10

fascia lata

Answer 10

broad flat sheet of deep fascia on the lateral aspect of the thigh

Question 11

iliotibial tract

Answer 11

dense band within the fascia lata

Question 12

anterior muscles of the thigh

Answer 12

3 muscles that are located on the anterior aspect of the thigh

Question 13

sartorius muscle

Answer 13

Origin: anterior superior iliac spine, Insertion: medial aspect of the tibial tuberosity Action: flex coxal joint rotate thigh laterally (externally), felt genial joint, rotate crus medially (internally) at knee joint

Question 14

quadriceps femoris muscle

Answer 14

4 headed muscles which occupies most of the anterior thigh region

Question 15

rectus femoris muscle

Answer 15

Origin: anterior inferior iliac spine Insertion: tibial tuberosity Action: flex coxal joint, extend genual joint

Question 16

vastus intermedius muscle

Answer 16

Origin: anterior aspect of body of the femur bone Insertion: tibial tuberosity Action: extend genual joint

Question 17

vastus lateralis muscle

Answer 17

Origin: lateral aspect of body of the femur bone Insertion: tibial tuberosity Action: extend genual joint

Question 18

vastus medialis muscle

Answer 18

Origin: medial aspect of body of the femur bone Insertion: tibial tuberosity Action: extend genual joint

Question 19

posterior muscles of the thigh

Answer 19

3 large muscles on the back of the thigh “hamstrings”

Question 20

biceps femoris muscle

Answer 20

large muscle on post lateral aspect of the thigh it has two heads

Question 21

long head of the biceps femoris muscle

Answer 21

Origin: ischiatica tuber Insertion: head of the fibula, lateral condyle of the tibia Action: extend coxal joint (long head), flex genual joint, rotate crus laterally (externally)

Question 22

short head of the biceps femoris muscle

Answer 22

Origin: lateral lip of linea aspera of the femur bone head of the fibula, lateral condyle of the tibia Action: flex genual joint, rotate crus laterally (externally)

Question 23

semitendinosus muscle

Answer 23

Origin: ischiatic tuber Insertion: medial aspect of the proximal part of the tibia body Action: extend coxal joint, flex genual joint, rotate crus medially (internally)

Question 24

semimembranosus muscle

Answer 24

Origin: ischiatic tuber Insertion: medial condyle of the tibia Action: extend coxal join, flex genual joint, rotate crus medially (internally)

Question 25

medial muscles of the thigh

Answer 25

6 mules in this group

Question 26

gracilis muscle

Answer 26

Origin: inferior rams of the pubis Insertion: medial aspect of proximal part of the tibial body Action: adduct inferior limb at coxal joint, flex genual joint rotate crus medially (internally)

Question 27

pectineus muscle

Answer 27

Origin: pecten of the pubis Insertion: proximal end of the posterior aspect of the femoral body Action: adduct inferior limb at coxal join, flex coxal joint

Question 28

adductor longus muscle

Answer 28

Origin: pubic symphysis and adjacent body of the pubis Insertion: middle third of the medial lip of linea aspera of the femur bone Action: adduct inferior limb at coxal joint

Question 29

adductor brevis muscle

Answer 29

Origin: inferior famous of the pubis Insertion: medial lip of linea aspera of the femur bone Action: adduct inferior limb at coxal joint

Question 30

adductor Magnus muscle

Answer 30

Origin: ischiatic tuber, inferior rams of the pubis, rams of the ischium Insertion: linea aspera and adductor tubercle o the femur bone Action: adduct inferior limb at coxal joint, extend coxal joint

Question 31

anterolateral muscles of the crus

Answer 31

6 muscles are flexors

Question 32

anterior tibial muscles

Answer 32

Origin: proximal tibia and crural interosseous membrane Insertion: medial cuneiform bone and first metatarsal bone Action: flex (dorsiflex) the talocrural joint, invert the foot

Question 33

long digital extensor muscle

Answer 33

Origin: laterally condyle of the tibia, proximal fibula and crural interosseous membrane Insertion: distal phalanges of digits 2-5 Action: flex ( dorsiflex) talocrural joint, extend digit joints of digits 2-5

Question 34

extensor hallucis longus muscle

Answer 34

Origin: middle of the fibula and crural interosseous membrane Insertion: base of the distal phalanx of the big toe Action: extend digital joints of big toe, flex (dorsiflex) talocrural joint

Question 35

peroneus (fibularis) longus muscle

Answer 35

Origin: proximal 3rd of the fibula Insertion: medial cuneiform bone and base of the 1st metatarsal bone Action: extend (planter flex) talocrural joint, evert pes

Question 36

peroneus (fibularis) brevis muscle

Answer 36

Origin: lateral half of the fibula Insertion: base of the 5th metatarsal bone Action: evert foot, extend (plantar flex) the talocrural joint

Question 37

peroneus tertius muscle

Answer 37

Origin: lower 3rd of the body of the fibula Insertion: dorsal of the ase of the 5th metatarsal bone Action: flex (dorsiflex) the talocrural joint, evert the pes

Question 38

posterior muscles of the crus

Answer 38

7 muscles are flexors of the digital joints

Question 39

gastrocnemius muscle

Answer 39

muscles which form much of the contour of the calf of the leg

Question 40

soleus muscle

Answer 40

Origin: posteroproximal aspect of the tibia ad fibula Insertion: tuber calcanei Action: extend (plantar flex) talocrural joint, flex genual joint

Question 41

plantaris muscle

Answer 41

Origin: lateral epicondyle of the femur bone Insertion: tuber calcanei Action: extend (planter flex) talocrural joint

Question 42

popliteus muscle

Answer 42

Origin: lateral epicondyle of the femur bone Insertion: posterior aspect of the tibia above the live of the soleus muscle Action: flex genual joint, rotate crus medially (internally)

Question 43

flexor hallucis longus muscle

Answer 43

Origin: distal 2-thirds of the fibula and crural interosseous membrane Insertion: base of the distal phalanx of the 1st digit Action: flex digital joints of the 1st digit, extend (plantar flex) talocrural joint, invert pes

Question 44

flexor digitorum longus muscle

Answer 44

Origin: 3rd of posterior surface of the tibia Insertion: digital phalanges of digits 2-5 Action: flex digital joins of minor toes, extend (plantar flex) talocrural joint

Question 45

posterior tibial muscle

Answer 45

Origin: posterior aspect of the tibia and fibula Insertion: tarsal bones (except talus) and metatarsal bones 2-4 Action: extend ( plantar flex) talocrural joint, invert pes

Question 46

posterior tibial muscle

Answer 46

Origin: posterior aspect of the tibia and fibula Insertion: tarsal bones (except talus) and metatarsal bones 2-4 Action: extend ( plantar flex) talocrural joint, invert pes