chpt 8: pelvic girdle Flashcards
which 4 bones is the pelvis made of
- sacrum
- coccyx
- right and left ossa coxae
function of pelvis
- protect and support the viscera in the inferior part of the ventral body cavity
how many bones is the pelvic girdle made of + names
2 osa coxae
which body structure supports the weight of body from the vertebral column
pelvic girdle
which fuses bones is the osa coxae made of ?
- ilium
- ischium
- pubis
which pelvic girdle/ osa coxae structure is the large and the most superior
ilium
structures of the ilium
- iliac crest
- gluteal lines
- ala
- body of ilium
- spines
- iliac fossa
- iliac tuberosity
- acetabulum
- greater sciatic nerve
which ilium structure is the hip pointer and forms the ant superior iliac spine
iliac crest
greater sciatic notch function
sciatic nerve passes through
gluteal lines function
muscle attachment
which ilium structure forms the superior portion
ala
function of spines
serve as attachment of muscles and ligaments of trunk, hip and thigh
attachment point of iliac muscles
-iliac fossa
iliac tuberosity function
attachment for the sacroiliac ligament
where does the sacrum articulate to form the sacroiliac joint
artiulcar surface on ilium
what structure is the socket for the head of femur
acetabulum
acetlablum location
made of all three bones (ilium, ischium, pubis)
ischium location
- inferior, posterior part of hip
structures of the ischium
- ischium tuberosity
- superior body
- inferior ramus
- lesser sciatic notch
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ischium function
- touches chair
- origin of hamstring/ post flexor muscles
which ischium structure joins pubis
inferior ramus
function/ purpose of less sciatic notch
- sciatic + other nerves pass through
which pelvic girdle/ osa coxae structures form the obturator foramen
pubis and ischium
function of obtuurtor foramen
- bv and nerves pass through
which pelvic girdle/ osa coxae is the anterior inferior structure of hip
pubis
structures of the pubis
- superior ramus, body, inferior ramus
- pubic symphysis
- acetoblar notch
what is the pubis symphysis
- pubis joining
- covered by fibrocartilage
which structure allows bv and nerves to pass is the attachment for ligaments of the head of the femur
- acetabular notch on pubis
location of the pelvic brim / what is it
line from the sacral promontory to the upper part of the pubis symphsis
what is above the pelvic brim
greater/ false
function of the greater/ false pelvis
- contains NO sex organs
- contains uterus during pregnancy and bladder when full
location of lesser/ true pelvis
inferior to pelvic brim
what pelvic contains sex organs + bladder
- lesser/ true pelvis
what pelvic structure is the path way of a baby during birth
pelvic axis
where is the greater/ false pelvis shallow
females
when is the pelvic brim/ inlet narrow and heart shaped
males
structure of the acetabulum in females
small and faces anteriorly
structure of acetabulum In males
larger and faces laterally
when is the obturator foramen more oval than round
females
pubic arch in females
greater than 90
when is the iliac crest more curved
men
lilac structure in females
less vertical
when is the greater sciatic notch around 70 degrees and inverted
in males
coccyx structure in females
more moveable and more curved anteriorly
when is the sacrum longer, narrower and more curved anteriorly
men
pelvic outlet structure in females
wider
structure of iliac tuberosity in females
shorter, farther apart, more medially projected
when is the ischial tuberosity narrower, closer, more lateral projecting
men
function of muscles that move that coxal joint/ thigh
- stablize joint
- provide support of body during movement
- iliacus
- psoas major and minor
- sartoruis
- rectus femoris
are a part of
- anterior muscles that move the femur
iliacus origin
iliac fossa of ilium
lesser trochanter of femur is the ___ for Iliacus muscle
insertion
function of iliacus
- flex and rotate thigh lateral
transverse process and body of lumbar vert is
the origin of the psoas major and minor muslcles
what is the insertion of psoas major and minor muslcles
lesser trochanter of femur
which anterior muscle that moves the femur is the longest and as an organ from the anterior superior iliac spine and an insertion on the meidal surface of body of tibia
sartorius
posterior gluteal muscles
- gluteus maximus
- gluteus medias and minimus
which muscles contributes to the round of the booty
gluteus maximus
function of gluteal Maximus
- hip extensor
- lateral rotate femur
what gluteal structure abducts and medially rotes thigh at hip joint
gluteus medius and minmus
main function of medial groups of muscles
adduct
what is the common origin of the medial groups
pubic bone
shaft of femur is the common insertion for
medial muscles that move the femur
medial muscles that move the femur
- adductor Magnus
- adductor longus
- adductor brevis
- gracilis
- pectinous
which medial muscle is the largest, deepest and adducts, rotates and extends thigh
adductor magnus
which medial muscle is near the pubis symphysis
- adductor longus
function of adductor longus and adductor brevis
-adduct, rotate and flex thigh
adductor brevis location ish
near ramus and body of pubis
which medial muscle is responsible for flexing knee and leg
gracilis
origin of pectineus
pectoral line of pubis ramus
function of pectineus
- adduct and flex thigh at hip joint
what muscle belongs to the lateral group
- tensor fasciae latae
tensor fasciae latae origin
iliac crest/ spine
tensor fasciae latae insertion
tibia (ilotibal tract)
function of tensor fasciae latae
- flex and abduct thigh medially
what forms the mediall and lateral plantar nerve
lumbar plexus
what plexuses innervates the pelvic girdle
-sacral plexus
cultaneous innervation of lumbar plexus
- calf of leg
- plantar surface of foot
- posterior thigh and leg
- intrinsic muscles of foot
are from __ innervation of lumbar plexus
- motor
lumbar plexus origin
L1-L5
what nerves emerge from the lumbar plexus
- femoral nerve
- oburator nerve
femoral nerve is the ___ division of the lumbar plexus
posterior
femoral nerve innervation
- anterior and medial portion of thigh
- medial side of leg and foot
which nerve makes up the anterior division of the lumbar plexus
obturator nerve
which nerve innervates the medial and adductor muscles of thigh
obturator nerve
