ZOO 3733C Exam 5: The Lower Limb || with Accurate Answers 100%.
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ZOO 3733C
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ZOO 3733C
Know the importance of the ligament of the head of the femur (aka acetabular ligament) correct answers -before puberty when the epiphyseal plates fuse, the acetabulum ligament is actually an artery (to supply blood to the head of the femur)
-after the epiphyseal line is formed, the acetabulum liga...
know the importance of the ligament of the head of
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ZOO 3733C Exam 5: The Lower Limb || with Accurate
Answers 100%.
Know the importance of the ligament of the head of the femur (aka acetabular ligament) correct
answers -before puberty when the epiphyseal plates fuse, the acetabulum ligament is actually an
artery (to supply blood to the head of the femur)
-after the epiphyseal line is formed, the acetabulum ligament is connective tissue that connects
the acetabulum to the head of the femur
-more stability, less room for mobility bc very secure
Know which nerves are part of the lumbosacral plexus, including the roots. correct answers
lumbar plexus (L1-L4)
-iliohypogastric L1
-ilioinguinal L1
-genitofemoral L1-L2
-lateral femoral cutaneous L2-L3
main branches
-obturator L2-L4
-femoral L2-L4
Know the location, origin and insertion, function, and innervation of the iliopsoas correct
answers 1. psaos major
a. origin: superficial: T12-L4 lateral intervertebral disks
deep: L1-L5 vertebrae- transverse processes
b. insertion: lesser tronchanter
c. innervation: direct branches from the lumbar plexus
2. iliacus
a. origin: iliac fossa
b. insertion: lesser tronchanter
c. innervation: femoral n
function: flexion and rotation of the hip, unilateral contraction of the spine, bends trunk of spine
laterally
, Gluteal muscles: Know the location, origin and insertion, function, and innervation of the gluteus
maximus correct answers a. origin: sacrum (dorsal, lateral), ilium (gluteal, posterior),
thoracolumbar fascia, sacrotuberous ligament
b. insertion: upper fibers: iliotibial tract (abduction)
lower fibers: gluteal tuberosity (adduction)
c. innervation: inferior gluteal n
d. function: extend and rotate hip in sagittal and coronal planes
Gluteal muscles: Know the location, origin and insertion, function, and innervation of the gluteus
medius correct answers a. origin: ilium (gluteal surface below the iliac crest between the gluteal
line)
b. insertion: greater trochanter (lateral)
c. innervation: superior gluteal n
d. function: entire muscle: abducts hip, stabilize pelvis
anterior: flexion and internal rotation
posterior: extension and external rotation
Gluteal muscles: Know the location, origin and insertion, function, and innervation of the gluteus
minimus correct answers a. origin: ilium (gluteal surface below the gluteus medius)
b. insertion: greater trochanter (anterolateral)
c. innervation: superior gluteal n
d. fxn: same as gluteal medius
entire muscle: abducts the hip, stabilizes pelvis
anterior part: flexion and internal rotation
posterior part: extension and external rotation
Gluteal muscles: Know the location, origin and insertion, function, and innervation of the tensor
fascia latte correct answers a. origin: anterior superior iliac spine
b. insertion: iliotibial tract
c. innervation: superior gluteal n.
d. fxn abduction, flexion, internal rotation of the hip, tenses the fascia latte
Gluteal muscles: Know the location, origin and insertion, function, and innervation of the
piriformis correct answers a. origin pelvic surface of the sacrum
b. insertion apex of the greater trochanter of femur
c. innervation direct branches of the sacral plexus
d. fxn stabilization, extension, abduction, and external rotation of the hip
Gluteal muscles: Know the location, origin and insertion, function, and innervation of the
obturator internus correct answers a. origin inner surface of the obturator membrane and its bony
boundaries
b. insertion medial surface of the greater trochanter
c. innervation direct branches of the sacral plexus
d. fxn extension, adduction, external rotation of hip joint (abduction depending on the location)
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