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The lower limb consists of the following regions:
Hip
Gluteal region
Thigh
Knee
Leg
Ankle
Foot
gluteal region
The gluteal region is an area of transition from the trunk to the lower limb.

why is the gluteal region part of the lower limb
Because many structures here act on the lower limb, it is considered to be a part of the lower limb.
latin for hip
coxa
latin for buttock
clunis
latin for thigh
femur
latin for knee
genu
latin for leg
crus
latin for calf
sura
latin for ankle
talus
latin for foot
pes
latin for heel
calx
latin for sole
planta
latin for toes
digiti pedis
latin for big toe
hallux
functions of lower limb
support body weight
locomotion
Lower limb is connected to the trunk by ________, it is formed by ______
Like the upper limb, the lower limb is connected to the trunk by a girdle.
It is formed by the 2 hip bones, which are joined in front, but are separated behind by the sacrum
Pelvic girdle is formed by the _____ hip bones, which are joined in ____, but are separated ________
2
front
behind the sacrum
Muscles of the gluteal region
gluteus maximus
gluteus medius
gluteus minimus
tensor fasciae latae

gluteus maximus: action
extend and laterally rotate thigh at hip

gluteus maximus: innervation
inferior gluteal nerve

gluteus medius: action
abduct and medially rotate thigh at hip

gluteus medius: innervation
superior gluteal nerve

gluteus minimus: action
abduct and medially rotate thigh at hip

gluteus minimus: innervation
superior gluteal nerve

tensor fasciae latae: action
flex and medially rotate thigh at hip

tensor fasciae latae: innervation
superior gluteal nerve

lateral rotators
Piriformis,
superior Gemellus,
Obturator internus,
inferior Gemellus,
quadratus femoris,
obturator externus
6 muscles
Pee GO GO Quickly

piriformis: action
laterally rotates thigh at hip

piriformis: innervation
nerve to piriformis

superior gemellus: action
laterally rotates thigh at hip

superior gemellus: innervation
nerve to obturator internus and superior gemellus

obturator internus: action
laterally rotates thigh at hip

obturator internus: innervation
nerve to obturator internus and superior gemellus

inferior gemellus: action
laterally rotates thigh at hip

inferior gemellus: innervation
nerve to quadratus femoris and inferior gemellus

quadratus femoris: action
laterally rotates thigh at hip

quadratus femoris: innervation
nerve to quadratus femoris and inferior gemellus

obturator externus: action
laterally rotates thigh at hip

obturator externus: innervation
posterior branch of obturator nerve

anterior thigh muscles
Iliopsoas
Sartorius
Quadriceps femoris
--> rectus femoris
--> vastus lateralis
--> vastus medialis
--> vastus intermedius
(I Start Quizzing Random Vaccinated Vegan Valedictorians)

iliopsoas: action
flexion of trunk

iliopsoas: innervation
femoral nerve

What is iliopsoas muscle composed of
iliacus muscle and psoas major muscle
sartorius: action
flexes, abducts, and laterally rotates thigh at hip
flexes leg at knee
(tailors muscle)

sartorius: innervation
femoral nerve

quadriceps femoris parts
rectus femoris, vastus lateralis, vastus medialis, vastus intermedius

rectus femoris: action
flex thigh at hip, extend leg at knee

rectus femoris: innervation
femoral nerve

vastus lateralis: action
extend leg at knee

vastus lateralis: innvervation
femoral nerve

vastus medialis: action
extends leg at knee

vastus medialis: innervation
femoral nerve

vastus intermedius: action
extend leg at knee

vastus intermedius: innervation
femoral nerve

medial thigh muscles
Gracilis
Pectineus
Adductor longus
Adductor brevis
Adductor magnus
(GPA Always Awesome)
(In order of the way they appear on body:
Pectineus
Add Magnus
Add Brevis
Add Longus
Gracilis)

gracilis: action
adducts thigh at hip
flex leg at knee

gracilis: innervation
anterior branch of obturator nerve

pectineus: action
adducts and flexes thigh at hip

pectineus: innervation
femoral nerve

adductor longus: action
adduct and flex thigh at hip

adductor longus: innervation
anterior branch of obturator nerve

adductor brevis: action
adduct and flex thigh at hip

adductor brevis: innervation
anterior branch of obturator nerve

adductor magnus parts
adductor part (ischiopubic ramus) and extensor part (ischial tuberosity)

adductor magnus (adductor part): action
adduct and flex thigh at hip

adductor magnus (extensor part): action
extend thigh at hip

adductor magnus (adductor part): innervation
posterior branch of obturator nerve

adductor magnus (extensor part): innervation
tibial part of sciatic nerve

posterior thigh muscles (hamstrings)
Semitendinosus
Semimembranosus
Biceps femoris (long head and short head)

semitendinosus: action
extend thigh at hip
flex leg at knee

semitendinosus: innervation
tibial part of sciatic nerve

semimembranosus: action
extends thigh at hip
flex leg at knee

semimembranosus: innervation
tibial part of sciatic nerve

biceps femoris parts
long head and short head

biceps femoris LONG HEAD: action
extend thigh at hip, flex leg at knee

biceps femoris LONG HEAD: innervation
tibial part of sciatic nerve

biceps femoris SHORT HEAD: action
lateral rotation of leg at knee

biceps femoris SHORT HEAD: innervation
common fibular part of sciatic nerve

anterior leg compartment
tibialis anterior,
extensor hallucis longus,
extensor digitorum longus,
fibularis (peroneus) tertius
(Tina has 2 Erasers and 1 Folder)

tibialis anterior: action
dorsiflexes and inverts foot at ankle

tibialis anterior: innervation
deep fibular nerve

extensor hallucis longus: action
extend big toe

extensor hallucis longus: innervation
deep fibular nerve

extensor digitorum longus: action
extends toes 2-5

extensor digitorum longus: innervation
deep fibular nerve

fibularis (peroneus) tertius: action
dorsiflexes and everts foot at ankle

fibularis (peroneus) tertius: innervation
deep fibular nerve

lateral leg compartment
Fibularis (peroneus) longus
Fibularis (peroneus) brevis

fibularis (peroneus) longus: action
evert foot at ankle

fibularis (peroneus) longus: innervation
superficial fibular nerve

fibularis (peroneus) brevis: action
evert foot at ankle

fibularis (peroneus) brevis: innervation
superficial fibular nerve

superficial posterior leg compartment
Gastrocnemius
Plantaris (freshman nerve)
Soleus
GPS

gastrocnemius: action
plantar flexes foot at ankle

gastrocnemius: innervation
tibial nerve

soleus: action
plantar flexes foot at ankle

soleus: innervation
tibial nerve

plantaris: action
plantar flex foot at ankle

plantaris: innervation
tibial nerve
