ORIGINS/INSERTION/ACTION - LOWER LIMBS

Question 1

Diaphragm (breathing)

Answer 1

• Origin: Costal cartilage
• Insertion: Ribs
• Action: Increase thoracic cavity space

Question 2

External intercostal (breathing)

Answer 2

• Origin: Lower margin of 11 ribs
• Insertion: Superior border of ribs below
• Action: Elevation of ribs for inspiration

Question 3

Internal intercostal (breathing)

Answer 3

• Origin: Ridge of inner surface of ribs and corresponding costal cartilage
• Insertion: Superior border of ribs below
• Action: Depression of ribs for expiration

Question 4

Rectus Abdominis (in moving vertebral column; anterior)

Answer 4

• Origin: Pubis
• Insertion: Ribs
• Action: Compression of abdomen

Question 5

Transverse Abdominis (in moving vertebral column; anterior)

Answer 5

• Origin: Ilium
• Insertion: Midline of body (lines alba)
• Action: Compression of abdomen

Question 6

External oblique (in moving vertebral column; anterior)

Answer 6

• Origin: Ribs
• Insertion: Ilium
• Action: Compression of abdomen

Question 7

Internal Oblique (in moving vertebral column; anterior)

Answer 7

• Origin: Ilium
• Insertion: Lower 4 ribs
• Action: Compression of abdomen

Question 8

3 parts of erector spinae

Answer 8

• Iliocostalis group
• Spinalis group
• Longissimus group

Question 9

Iliocostalis group (in moving the vertebral column; posterior)

Answer 9

• Origin: Sacrum
• Insertion: Cervical vertebrae
• Action: Extension of vertebral column

Question 10

Spinalis group (in moving vertebral column; posterior)

Answer 10

• Origin: Cervical vertebrae
• Insertion: Cervical vertebrae
• Action: Extension of vertebral column

Question 11

Longissimus group (in moving vertebral column; posterior)

Answer 11

• Origin: Cervical vertebrae
• Insertion: Cervical vertebrae
• Action: Extension of vertebral column

Question 12

Adductor Magnus (in moving the thigh)

Answer 12

• Origin: Pubis
• Insertion: Femur
• Action: Adduction of femur

Question 13

Adductor Longus (in moving thigh)

Answer 13

• Origin: Pubis
• Insertion: Femur
• Action: Adduction of femur

Question 14

Sartorius (in moving thigh)

Answer 14

• Origin: Ilium
• Insertion: Tibia
• Action: Flexion of femur

Question 15

Gluteus Maximus (in moving thigh)

Answer 15

• Origin: Ilium
• Insertion: Femur
• Action: Extension of femur

Question 16

Gluteus Medius (in moving thigh)

Answer 16

• Origin: Ilium
• Insertion: Femur
• Action: Extension of femur

Question 17

Gluteus Minimus (in moving thigh)

Answer 17

• Origin: Ilium
• Insertion: Femur
• Action: Medial rotation femur

Question 18

2 parts of iliopsoas

Answer 18

• Iliacus
• Psoas major

Question 19

Iliacus (in moving thigh)

Answer 19

• Origin: Ilium
• Insertion: Femur
• Action: Flexion femur at hip

Question 20

Psoas major (in moving thigh)

Answer 20

• Origin: T12 vertebrae
• Insertion: Femur
• Action: Flexion femur at hip

Question 21

Gracilis (in moving lower leg)

Answer 21

• Origin: Pubis
• Insertion: Tibia
• Action: Flexion lower leg

Question 22

Vastus Medialis (in moving lower leg)

Answer 22

• Origin: Femur
• Insertion: Tibia
• Action: Extension lower leg

Question 23

Rectus Femoris (in moving lower leg)

Answer 23

• Origin: Ilium
• Insertion: Tibia
• Action: Extension lower leg

Question 24

Hamstrings (in moving lower leg)

Answer 24

• Origin: Ischium
• Insertion: Tibia
• Action: Medial rotation knee

Question 25

Gastrocnemius (in moving foot)

Answer 25

• Origin: Femur
• Insertion: Calcaneus via Achilles tendon
• Action: Plantarflexion

Question 26

Soleus (in moving foot)

Answer 26

• Origin: Tibia
• Insertion: Calcaneus via Anchiles tendon
• Action: Plantarflexion

Question 27

Tibialis Anterior (in moving foot)

Answer 27

• Origin: Tibia
• Insertion: Tarsal
• Action: Dorsiflexion