Lab 11 - Muscle Lab II

Question 1

rectus abdominis

Answer 1

origin: pubis
insertion: ribs
action: flexion of vertebral column

Question 2

erector spinae

Answer 2

iliocostalis group:
origin: ribs
insertion: ribs
action: extension of vertebral column

spinalis/longissimus group:
origin: cervical vertebrae
insertion: cervical vertebrae
action: extension of vertebral column

Question 3

gluteus maximus

Answer 3

origin: ilium
insertion: femur
action: extension of femur

Question 4

gluteus medius

Answer 4

origin: ilium
insertion: femur
action: extension of femur

Question 5

iliopsoas

Answer 5

iliacus:
origin: ilium
insertion: femur
action: flexion of femur at hip

psoas major:
origin: T12 vertebrae
insertion: femur
action: flexion of femur at hip

Question 6

hamstrings

Answer 6

origin: ischium
insertion: tibia
action: flexion of knee

Question 6

gracilis

Answer 6

origin: pubis
insertion: tibia
action: adduction of femur

Question 6

sartorius

Answer 6

origin: ilium
insertion: tibia
action: adduction of femur

Question 6

rectus femoris

Answer 6

origin: ilium
insertion: tibia
action: flexion of femur at hip

Question 6

gastrocnemius

Answer 6

origin: femur
insertion: calcaneus (tarsal) via Achilles tendon
action: plantarflexion

Question 6

soleus

Answer 6

origin: tibia
insertion: calcaneus (tarsal) via Achilles tendon
action: plantarflexion

Question 7

tibialis anterior

Answer 7

origin: tibia
insertion: tarsal
action: dorsiflexion