Lab Practical 2

origin of diaphragm

xiphoid process, lower costal cartilages, upper lumbar vertebrae, medial and lateral acruate ligaments

insertion of diaphragm

central tendon of diaphragm

action of diaphragm

expands thorax during inspiration

nerve supply to diaphragm

phrenic nerve

origin of rectus abdominus

pubic symphysis and crest

insertion of rectus abdominus

costal cartilages of ribs 5-7, xiphoid process

action of rectus abdominus

flexes vertebral column, compresses abdomen

nerve supply to rectus abdominus

intercostal nerves T7-T12

origin of external abdominal oblique

lower 8 ribs

insertion of external abdominal oblique

abdominal aponeurosis to linea alba, pubis, anterior iliac crest

action of external abdominal oblique

flexes vertebral column and compresses abdomen, ipsilateral flexion and contralateral rotation of vertebral column

nerve supply to external abdominal oblique

intercostal nerves T7-T12, iliohypogastric and ilioinguinal nerves

origin of internal abdominal oblique

inguinal ligament, iliac crest, thoracocolumnar aponeurosis

insertion of internal abdominal oblique

costal cartilages of lower ribs, abdominal aponeurosis to linea alba

action of internal abdominal oblique

flexes vertebral column and compresses abdomen, ipsilateral flexion and rotation of vertebral column

nerve supply to internal abdominal oblique

intercostal nerves T7-T12, iliohypogastric and ilioinguinal nerves

origin of transverse abdominus

inguinal ligament, iliac crest, thoracocolumnar aponeurosis, costal cartilage of ribs 7-12

insertion of transverse abdominus

abdominal aponeurosis to linea alba, pubis

action of transverse abdominus

compresses abdomen

nerve supply to transverse abdominus

intercostal nerves T7-T12, iliohypogastric and ilioinguinal nerves

origin of quadratus lumborum

iliac crest

insertion of quadratus lumborum

12th rib, transverse processes L1-L4

action of quadratus lumborus

lateral flexion of vertebral column, elevates hip

nerve supply to quadratus lumborum

ventral rami of T12-L4

origin of iliacus

iliac fossa

insertion of iliacus

lesser trochanter of femur

action of iliacus

flexion of hip, flexion of lumbar vertebral column

nerve supply to iliacus

femoral nerve

origin of psoas major

T12-L5 vertebral bodies and discs, L1-L5 transverse processes

insertion of psoas major

lesser trochanter of femur

action of psoas major

flexion of hip, flexion of lumbar vertebral column

nerve supply to psoas major

anterior rami of spinal nerves L2-L3

origin of psoas minor

vertebral body of T12-L1

insertion of psoas minor

superior ramus of pubis

action of psoas minor

flexion of lumbar vertebral column

nerve supply to psoas minor

spinal nerves L1

origin of gluteus maximus

posterior sacrum and sacrotuberous ligament, superior posterior ilium

insertion of gluteus maximus

gluteal tuberosity of femur, lateral condyle of tibia via iliotibial tract

action of gluteus maximus

extension of hip, external rotation of hip

nerve supply to gluteus maximus

inferior gluteal of hip

origin of gluteus medius

middle posterior ilium

insertion of gluteus medius

greater trochanter of femur

action of gluteus medius

abduction of hip, internal rotation of hip

nerve supply to gluteus medius

superior gluteal nerve

origin of gluteus minimus

inferior posterior ilium

insertion of gluteus minimus

anterior surface of greater trochanter of femur

action of gluteus minimus

abduction of hip, internal rotation of hip

nerve supply to gluteus minimus

superior gluteal nerve

origin of tensor fascia lata

anterior iliac crest

insertion of tensor fasica lata

lateral condyle of tibia bia iliotibial tract

action of tensor fascia lata

stabilizes extended knee, flexion of hip, abduction of hip, internal rotation of hip

nerve supply to tensor fascia lata

superior gluteal nerve

origin of piriformis

anterior sacrum

insertion of piriformis

greater trochanter of femur

action of piriformis

external rotation of hip

nerve supply to piriformis

anterior rami of S1-S2

origin of quadratus femoris

ischial tuberosity

insertion of quadratus femoris

quadrate tubercle

action of quadratus femoris

external rotation of hip

nerve supply to quadratus femoris

nerve to quadratus femoris, L4, L5, S1

origin of obturator internus

obturator membrane, superior pubic ramus

insertion of obturator internus

greater trochanter of femur

action of obturator internus

external rotation of hip

nerve supply to obturator internus

sacral plexus, L5, S1, S2

origin of obturator externus

obturator membrane, pubic and ischial rami

insertion of obturator externus

greater trochanter of femur

action of obturator externus

external rotation of hip

nerve supply to obturator externus

obturator nerve

origin of semimembranosus

ischial tuberosity

insertion of semimembranosus

posterior medial tibial condyle

action of semimembranosus

flexion of knee, internal rotation of flexed knee, extension of hip

nerve supply to semimembranosus

tibial division of sciatic nerve

origin of semitendinosus

ischial tuberosity

insertion of semitendinosus

pes anserinus

action of semitendinosus

flexion of knee, internal rotation of flexed knee, extension of hip

nerve supply to semitendinosus

tibial division of sciatic nerve

origin of biceps femoris

long head: ischial tuberosity, short head: linea aspera

insertion of biceps femoris

lateral surface of head of fibula, lateral condyle of tibia

action of biceps femoris

flexion of knee, external rotation of flexed knee, long head: extension of hip

nerve supply to biceps femoris

long head: tibial division of sciatic nerve, short head: common peroneal division of sciatic nerve

origin of sartorius

anterior superior iliac spine

insertion of sartorius

pes anserinus

action of sartorius

flexion of hip, abduction of hip, external rotation of hip, flexion of knee, internal rotation of knee

nerve supply to sartorius

femoral nerve

origin of rectus femoris

anterior inferior iliac spine, ilium above acetabulum

insertion of rectus femoris

patella, tibial tuberosity via patellar ligament

action of rectus femoris

extension of knee, flexion of hip

nerve supply to rectus femoris

femoral nerve

origin of vastus lateralis

linea aspera, greater trochanter and intertrochanteric line of femur

insertion of vastus lateralis

patella, tibial tuberosity via patellar ligament

action of vastus lateralis

extension of knee

nerve supply to vastus lateralis

femoral nerve

origin of vastus medialis

linea aspera, intertrochanteric line of femur

insertion of vastus medialis

patella, tibial tuberosity via patellar ligament

action of vastus medialis

extension of knee

nerve supply to vastus medialis

femoral nerve

origin of vastus intermedius

anterior and lateral femoral shaft

insertion of vastus intermedius

patella, tibial tuberosity via patellar ligament

action of vastus intermedialis

extension of knee

nerve supply to vastus intermedius

femoral nerve