TO SCORE A+!!
planes of section of the body correct answers - transverse: superior and inferior portions
- saggital plane: left and right halves
frontal/coronal: ant. and post.
components of a reflex arc correct answers receptor, sensory neuron, interneuron, motor
neuron, target organ
components + function of a typical spinal nerve correct answers - gray matter: centrally
located, where cell bodies are located
- white matter: superficially located, location of axons + cell processes
- dorsal horn: cell bodies of interneurons
ventral/ant. horn: motor neuron cell bodies
collateral circulation correct answers collateral vessels and anastomoses
anastomoses correct answers joining of 2 vessels with different orgins
hip bone correct answers - ilium, ischium, pubis which fuse at the acetabulum
- in females the sub-pubic angle is greater than 90 projecting the acetabulum more laterally
sacroiliac joint correct answers - sacrum --> ilium
- synovial
- triangle shape helps with weight transfer
- sacroiliac ligament: prevents inf. dislocation
- sacrotuberous and sacrospinous: prevent rotation
articulation of pelvic region correct answers - lumbosacral joint: btwn L5 and S1,
cartilaginous, supported by iliolumbar ligaments
- sacrolilliac joint: sacrum --> ilium, synovial
hip joint correct answers - acetabulum --> femur
- synovial, multiaxial
- flex/extend, abduct/adduct, rotate
- very stable
- ischiofemoral ligament (post.)
- iliofemoral ligament (ant.)
- pubic symphysis = cartilaginous joint
gluteus maximus function correct answers resist hip flexion, ex: walking
tensor fasciae latae correct answers - resist lateral rotation, stabilization
gluteus medius and minimus correct answers limit hip adduction
hip intrinsics correct answers - piriformis, sup. + inf. gemellus, obturator internus + externus,
quadratus femoris
, - fxn: Proprioception, tell you where your mm. are in space
- action: laterally rotate hip, small amount of hip extension
deep fascia correct answers - no water and fat
- epimysium
- compartmentalized the lower limb
- support system
superficial fascia correct answers - made up of water and fat
- route for nerves and vessels
nerve components of the lumbosacral plexus and their areas of responsibility correct answers
- ant/ventral rami of spinal nerves, L1-S4
- inn: gluteal region, lower limb
arterial supply to lower limb correct answers
venous return of lower limb correct answers - have 1 way vales
- deep set is the same as the artery they run with
- superficial veins, have their own names, great saphenous vein + small saphenous vein
anterior thigh correct answers actions: hip flexion
inn: femoral n.
medial thigh correct answers actions: adductors of hip, hip flexion
fxn: hip stabilizers
inn: obturator n.
posterior thigh correct answers actions: knee flexion, hip extension
fxn: limit hip flexion, limit knee extension
inn: sciatic n.
Knee Joint Ligaments correct answers - tibial/medial collateral lig: limits aBducion
- fibular/lateral collateral lig: limits adduction
- ant. cruciate lig: limits ant. movement of the tibia on the femur
- post. cruciate lig.: limits post. movement of the tibia on the femur
*together limit hyperextension of the knee + rotation
menisci correct answers - c-shaped cartilaginous rings
- don't heal well
- increase stability, shock absorber, allow for a little bit of movement
- medial meniscus is well anchored to the tibia
tibiofibular joint correct answers - non-synovial
- tibia --> fibula
talocrural joint correct answers - tibia/fibula --> talus
- synovial hinge
- plantar flexion and dorsiflexion