Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
24 Cards in this Set
- Front
- Back
|
What is the origin and insertion of psoas major? |
- O: anteriolateral vert. bodies and IVD (T12-L4/5) - I: lesser trochanter of femur |
|
|
What are the actions and innervation of the psoas major? |
- flexes thigh - flexes trunk when sitting - laterally flex vert. - APR L1-L3 |
|
|
What percent have people have the psoas minor? |
60% |
|
|
What is the origin and insertion of the iliacus? |
O: ala of sacrum, anterior 2/3 iliac fossa I: tendon of psoas major and less trochanter |
|
|
What are the actions of the iliacus? |
- flexes thigh, trunk (while sitting) - stabilize hip |
|
|
What O and I of the QL? |
O: 12th rib, TVPs L1-L5 I: internal lip of the posterior iliac crest |
|
|
What are the actions of the QL? Innervation? |
- Action: extends vertebrae, laterally flexes spine, fixes 12th rib during inspiration - Innervation: anterior branches of T12-L4 nerves |
|
|
What is the innervation of the diaphragm? |
- right and left phrenic n. (C3-C5) motor and sensation - peripheral sensation from intercostal and subcostal nerve |
|
|
What is the blood supply to the diaphragm? |
- pericardiacophrenic aa. (from internal thoracic) - musculophrenic aa. - superior phrenic aa. from thoracic aorta - inferior phrenic aa. from abdominal aorta |
|
Label the nerves in blue starting from the top. |
- subcostal n. - iliohypogastric n. - ilioinguinal n. - genitofemoral n. - lateral cutaneous nerve of thigh - obturator n. - femoral n. (big lateral yellow one) - lumbosacral trunk big medial yellow one) |
|
|
What is the path and innervation of the subcostal nerve? |
- under the lateral arcuate ligament along the inferior border of the 12th rib; then passes between 2nd and 3rd layers of the abdominal muscle - innervates mm. of anterolateral abdominal wall and over lying skin |
|
|
What does the lateral cutaneous branch of the subcostal nerve innervate? |
skin below the iliac crest |
|
|
What is the path of the iliohypogastric? |
- splits from the ilioinguinal and pierces TA to travel between it and inferior oblique to the anterior abdomen |
|
|
What does the iliohypogastric nerve innervate? (T12, L1) |
- TA and internal oblique - lateral cut. branch innervates skin over iliac crest and superolateral buttock - anterior cut. branch innervates inguinal ligament and skin in the pubic region |
|
|
What is the path of the ilioinguinal nerve? |
- runs twoard the iliac crest - pierces TA near ASIS and passes through inguinal canal - exits superficial inguinal ring, superior to spermatic cord - divides into femoral and scrotal/labial branch |
|
|
What does the ilioinguinal nerve innervate? (L1) |
- inferior part of internal oblique and TA - skin of lower inguinal region, mons pubis, anterior scrotum/labia major and adjacent superomedial thigh |
|
|
What muscle does the genitofemoral nerve pierce? (L1,L2) |
psoas major |
|
|
What does the femoral banch of the GF nerve pass under? What does it inn. |
- inguinal ligament - skin over lateral half of femoral triangle |
|
|
What does the genital branch of the GF nerve enter? What does it inn. |
- enters deep inguinal ring - inn. cremaster and dartos mm. (skin of scrotum/labia major) |
|
|
What is path of the lateral cutaneous nerve of thigh? (L2,L3) |
inferolaterally across iliacus, passes under inguinal lig. medial to ASIS |
|
|
What is the path of the obturator nerve? (L2-L4) |
- medial border of psoas major and passes into less (true) pelvis - through obturator canal to emerge in the medial thigh |
|
|
What does the obturator nerve innervate? |
- innervates adductor mm of thigh, part of knee joint and skin of medial thigh/knee |
|
|
The femoral nerve is _____ to psoas major, and ______ to iliacus, then passes _____ to inguinal ligament. |
lateral; anterior; deep |
|
|
What does the femoral nerve innervate? (L2-L4) |
- hip flexors and knee extensors - skin of anterior and medial thigh |
