Lessons 8-9 Flashcards
Pelvic Girdle
immobile, weight-bearing foundation for the upper body
hip bones
pair of large, curved bones that form the lateral and anterior parts of the pelvis
the hip bones are made of what three fused bones
ilium, ischium, and pubis
when in life do the hip bones fuse?
late teenage years
illium
large fan-like superior region connected to the sacrum by the sacroiliac joint
iliac crest
arching superior margin of the ilium along the waistline
iliac fossa
shallow depression at the internal surface of the upper ilium
greater sciatic
large inverted u-shaped indention on the posterior margin of the lower ilium
ischium
posteroinferior region of the hip
the ischium supports
the sitting body
ischial tuberosity
large, rough area of the inferior ischium that is the attachment for posterior muscle
ischial ramus
superior and anterior segment above the ischial tuberosity
ischial spine
bony projection separating the sciatic notches
pubis
anterior portion which curves medially to join the opposite pubis at the pubic symphysis joint
pubic body
large medial portion of the pubis
femur
single bone of the thigh bone
the longest and straightest bone in the body is the
femur
head of the femur
round, proximal end that articulates with the acetabulum
fovea capitis
indentation on the medial side of the femoral head where ligaments attach
neck of the femur
narrow region below the head
greater trochanter
large, upward, bony projection at the base of the neck of the femur
lesser trochanter
small, bony prominence on the medial side of the femur
gluteal tuberosity
roughened area extending from the greater trochanter
linea aspera
meets the gluteal tuberosity on the distal posterior side
lateral condyle
smooth portion that covers the distal and posterior parts of the lateral expansion
lateral epicondyle
roughened area on the lateral, outer side of the lateral condyle
medial condyle
smooth portion that covers the distal and posterior part of the medial expansion
medial epicondyle
roughened area on the medial outer side of the medial condyle
adductor tubercle
small bump on the superior margin of the medial epicondyle
intercondylar fossa
deep depression that separates the condyles posteriorly
patellar surface
smooth surface and wide groove where the condyles meet anteriorly
patella
kneecap
what is the largest sesamoid bone in the body
patella
tibia
shin bone that is the medial, weight-bearing bone of the lower leg
medial and lateral condyle
formed by the expanded proximal ends of the tibia
intercondylar eminence
irregular, elevated area at the proximal end of the tibia that is the attachment point for knee ligaments
tibial tuberosity
elevated area on the anterior side of the tibia near the proximal end
interosseous border
small ridge on the lateral side of the shaft that is the attachment site for the interosseous membrane
interosseous membrane
dense connective tissue that connects the tibia and fibula
medial malleolus
large expansion on the medial side of the distal tibia
fibular notch
wide groove on the distal tibia that articulates with the fibula
the articulation of the fibula and tibia forms the
tibiofibular joint
fibula
slender bone on the lateral lower leg that doesn’t bear weight
the fibula functions to
attach muscles
lateral malleolus
bony bump on the lateral side of the ankle
tarsal bones
form the posterior half of the foot
talus
square-shaped, upper surface that articulates with the tibia and fibula at the ankle joint
calcaneus
the heel
cuboidal bone
articulates with the anterior end of the calcaneus bone
navicular bone
articulates posteriorly with the talus
cuneiform bones
wedge shaped bones that articulate anteriorly with the navicular bone
cuneiform bones
medial, intermediate, and lateral
cuneiform bone shape
broad superior surface and narrow inferior surface
metatarsal bone forms
anterior half of the foot
the metatarsals form the
ball of the foot
phalanges
toes
each toe, except the big, has ___ phalanges, called the ___
three, proximal, medial, distal phalanges
hallux
big toe
interphalangeal joint
joint between adjacent phalanges
muscles that act on the hip and femur originate
on the pelvic girdle and gluteus maximus
iliopsoas primary action
flexes and laterally rotate the thigh and flex the torso
iliopsoas origin
psoas: vertebrae
iliacus: lilac and sacrum
iliopsoas insertion
lesser trochanter
iliopsoas innervation
femoral nerve
gluteus maximus primary action
extend thigh
gluteus maximus origin
dorsal ilium, sacrum, coccyxx
gluteus maximus insertion
gluteal tuberosity of femur
gluteus maximus innervation
inferior gluteal nerve
gluteus medius primary action
abduct thigh
gluteus medius origin
ilium
gluteus medius insertion
greater trochanter of femur
gluteus medius innervation
superior gluteal nerve
gluteus minimus
adduct thigh
gluteus minimus origin
ilium
gluteus minimus insertion
superior gluteal nerve
tensor fascia latae primary action
flex and abduct thigh
tensor fascia latae origin
iliac crest and spine
tensor fascia latae insertion
illiobital tract
tensor fascia latae innervation
superior gluteal nerve
adductor longus primary action
adduct and medially rotate thigh, flex thigh
adductor longus origin
pubis, near pubic symphysis
adductor longus insertion
linea aspera
adductor longus innervation
obturator nerve
adductor brevis primary action
adduct and flex thigh
adductor brevis origin
pubis
adductor brevis insertion
linea aspera
adductor brevis innervation
obturator nerve
adductor magnus primary action
adduct and medially rotate thigh, extend thigh
adductor magnus origin
ischial rami, pubic rami, ischial tuberosity
adductor magnus insertion
linea aspea
adductor magnus innervation
obturator nerve
pectineus primary action
adduct, flex, and medially rotate thigh
pectineus origin
pubis
pectineus insertion
lesser trochanter and linea aspera
pectineus innervation
femoral nerve
way to remember gluteus medius
middle
way to remember gluteus minimus
minimal
gluteus medius is deep to the gluteus ____, gluteus minimus is deep to the gluteus ____
gluteus maximus, gluteus medius
pectineus is ____ and ____ to the gluteus minimus
medial and deep
quadriceps femoris group muscles
rectus femoris, vastus lateralus, vastus medials, vastus intermedius
quadriceps femoris function
extend and stabilize the knee
most superficial quad muscle
rectus femoris
vastus intermedius location and way to remember
deep to the rectus femoris and forms a V
tensor fascia latae recognition trick
medial side, top is meaty, bottom is more fascia
Sartorius location
band-like muscle extending from the superior iliac spine to the medial side of the tibia
sartorius function
flexes the knee, flexes, abducts, and laterally rotates the hip
hamstring group function
flex the knee
hamstring group muscles
biceps femoris, semitendinosus, semimembranosus
most superficial hamstring group
biceps femoris
biceps femoris unique characteristic
two heads
semitendinosus has a long ____ end and semimembranosus has more ____
tendon, fascia
is semitendinosus or semimembranosus more medial
semimembranosus
gracilis primary action
adduct thigh and flex knee
gracilis origin
body of pubis and ischial ramus
gracilis insertion
medial surface of tibia
gracilis innervation
obturator nerve
sartorius primary action
flex, abduct, and laterally rotate thigh and flex knee
sartorius origin
superior iliac spine
sartorius insertion
proximal tibia
sartorius innervation
femoral nerve
rectus femoris primary action
extend knee, flex thigh
rectus femoris origin
inferior iliac spine, acetabulum
rectus femoris insertion
patella, tibial tuberosity
vastus lateralis primary action
extend knee
vastus lateralis origin
greater trochanter and linea aspera
vastus lateralis insertion
patella, tibial tuberosity
vastus lateralis innervation
femoral nerve
rectus femoris innervation
femoral nerve
vastus medialis primary action
extend knee
vastus medialis origin
linea aspera
vastus medialis insertion
patella and tibial tuberosity
vastus medialis innervation
femoral nerve
vastus intermedius primary action
extend knee
vastus intermedius origin
proximal femur shaft
vastus intermedius insertion
patella, tibial tuberosity
vastus intermedius innervation
femoral nerve
biceps femoris primary action
extend and laterally rotate thigh, flex knee
biceps femoris origin
ischial tuberosity, linea aspera, distal femu
biceps femoris insertion
fibular head, lateral condyle of tibia
biceps femoris innervation
sciatic nerve
semitendinosus primary action
extend and medially rotate thigh, flex knee
semitendinosus origin
ischial tuberoisty
semitendinosus insertion
medial, upper tibial shaft
semitendinosus innervation
sciatic nerve
semimembranosus primary action
extend and medially rotate thigh, flex knee
semimembranosus origin
ischial tuberosity
semimembranosus insertion
medial condyle of tibia
semimembranosus innervation
sciatic nerve
extensors are more ____, flexors are more ____
anterior, posterior
anterior muscles of the lower leg
tibialis anterior, extensor hallicus longus, extensor digitorum longus
lateral muscles of the lower leg
fibularis longus, fibularis brevis
posterior muscles make up the
calf
superficial muscles of the posterior lower leg
gastrocnemius, soleus, plantaris
gastrocnemius
most superficial and visible calf muscle
soleus
wide and flat, deep to the gastrocnemius
plantaris runs ____, and is ____
obliquely and is deep and small
deep calf muscles
popliteus, flexor digitorum longus, flexor hallicus longus, tibialis posterior
gastrocnemius primary action
plantar flexes foot, flexes knee
gastrocnemius origin
condyles of femur
gastrocnemius insertion
posterior calcaneus
gastrocnemius innervation
tibial nerve
soleus primary action
plantar flex foot
soleus origin
superior tibia and fibula, interosseous membrane
soleus insertion
posterior calcaneus
soleus innervation
tibial nerve
plantaris primary action
flex knee, plantar flex foot
plantaris origin
posterior femur, above the lateral condyle
plantaris insertion
calcaneus
plantaris innervation
tibial nerve
tibialis anterior primary action
dorsiflex and invert foot
tibialis anterior origin
lateral condyle, upper tibial shaft, interosseus membrane
tibialis anterior insertion
medial cuneiform, first metatarsal
tibialis anterior innervation
fibular nerve
tibialis posterior primary action
plantar flex foot
tibialis posterior origin
superior tibia and fibula, interosseous membrane
tibialis posterior insertion
tarsal bones
tibialis posterior innervation
tibial nerve
flexor hallucis longus primary action
plantar flex foot and flex big toe
flexor hallucis longus origin
midshaft of fibula, interosseous membrane
flexor hallucis longus insertion
distal phalanx of big toe
flexor hallucis longus innervation
tibial nerve
flexor digitorum longus primary action
plantar flex and invert foot, flex toes
flexor digitorum longus origin
posterior tibia
flexor digitorum longus insertion
distal phalanges
flexor digitorum longus innervation
tibial nerve
fibularis longus primary action
plantar flex and evert foot
fibularis longus origin
upper portion of lateral fibula
fibularis longus insertion
first metatarsal and medial cuneiform
fibularis longus innervation
fibular nerve
the tibialis anterior is most ___ and runs next to the ___
superficial, tibia
flexors start on the same/opposite side as the action they cause
opposite
flexor digitorum starts on the lateral/medial side of the leg, but flips to run into the lateral/medial digits
medial, lateral
flexor fibularis connects to the ____, on the medial/lateral side
fibula, lateral
plantar aponeurosis
deep fascia that supports the longitudinal arch of the foot