Ch 61 Consolidated Regions and Musculature of the Lower Limb Flashcards
Regions of the lower limbs (7 items)
hip
gluteal region (transition area between trunk and lower limb)
thigh
knee
leg
ankle
foot
“coxa”
hip
“clunis”
buttock
“femur”
thigh
“genu”
knee
“crus”
leg
“sura”
calf
“talus”
ankle
“pes”
foot
“calx”
heel
“planta”
sole
“digiti pedis”
toes
“hallux”
big toe
Lower limb functions (2 items)
support weight
locomotion
Pelvic girdle connects the _ and the _ _ and is formed by 2 _ bones.
trunk
lower limb
hip
The 2 hip bones are joined in the _ and separated behind by the _
front
sacrum
The gluteal region group of the lower limb contains 4 muscles:
Gluteus Maximus m
Gluteus Medius m
Gluteus Minimus m
Tensor Fasciae Latae m
The Lateral Rotator group of the lower limb contains 6 muscles:
Piriformis m
Superior Gemellus m
Obturator Internus m (OI)
Inferior Gemellus m
Quadratus Femoris m
Obturator Externus m
The Anterior Thigh group of the lower limb contains 3 main muscles (7 total)
Iliopsoas m (made of Iliacus and Psoas Major m)
Sartorius m
Quadriceps Femoris m (made of Rectus Femoris, Vastus Lateralis, Vastus Medialis, and Vastus Intermedius mm)
The Medial Thigh group of the lower limb contains 5 muscles:
Gracilis m
Pectineus m
ADDuctor Longus m
ADDuctor Brevis m
ADDuctor Magnus m
The Posterior Thigh (Hamstrings) group of the lower limb contains 3 main muscles
Semitendinosus m
Semimembranosus m
Biceps Femoris m (contains a long and a short head)
The Anterior Leg Compartment group of the lower limb contains 4 muscles:
Tibialis Anterior m
Extensor Hallucis Longus m
Extensor Digitorum Longus m
Fibularis (peroneus) Tertius m
The Lateral Leg Compartment group of the lower limb contains 2 muscles:
Fibularis (peroneus) Longus m
Fibularis (peroneus) Brevis m
The Superficial Posterior Leg Compartment group contains 3 muscles:
Gastrocnemius m
Soleus m
Plantaris m (aka freshman nerve)
The Deep Posterior Leg Compartment group contains 4 muscles:
Popliteus m
Tibialis Posterior m
Flexor Digitorum Longus m
Flexor Hallucis Longus m
The Dorsum of the Foot contains 1 muscle:
Extensor Digitorum Brevis
The Plantar Surface of the Foot group has _ layers of muscle.
4 layers
The 1st layer of the plantar surface of the foot contains 3 muscles:
ABDuctor Hallucis m
Flexor Digitorum Brevis m
ABDuctor Digiti Minimi m
The 2nd layer of the plantar surface of the foot contains 5 muscles:
Quadratus Plantae m
Lumbricals 1-4
The 3rd layer of the plantar surface of the foot contains 3 muscles:
Flexor Hallucis Brevis m
ADDuctor Hallucis m
Flexor Digiti Minimi Brevis m
The 4th layer of the plantar surface of the foot contains 7 muscles:
Plantar Interossei 1-3
Dorsal Interossei 1-4
Gluteus Maximus m
-group
-action
-innervation
G: Gluteal Region
A: Extend and laterally rotate thigh at hip
I: Inferior Gluteal n
Gluteus Medius m
-group
-action
-innervation
G: Gluteal Region
A: ABDuct and medially rotate thigh at hip
I: Superior Gluteal n
Gluteus Minimus m
-action
-innervation
A: ABDuct and medially rotate thigh at hip
I: Superior Gluteal n
Tensor Fasciae Latae m
-action
-innervation
A: Flex and medially rotate thigh at hip
I: Superior Gluteal n
Piriformis m
-group
-action
-innervation
G:Lateral Rotator
A: Laterally rotate thigh at hip
I: Nerve to piriformis
Superior Gemellus m
-group
-action
-innervation
G: Lateral Rotator
A: Laterally rotate thigh at hip
I: Nerve to obturator internus and superior gemellus
Obturator Internus (OI) m
-action
-innervation
A: Laterally rotate thigh at hip
I: Nerve to obturator internus and superior gemellus
Inferior Gemellus m
-group
-action
-innervation
G: Lateral Rotators
A: Laterally Rotate thigh at hip
I: Nerve to quadratus femoris and inferior gemellus
Quadratus Femoris m
-action
-innervation
A: Laterally rotate thigh at hip
I: Nerve to quadratus femoris and inferior gemellus
Obturator Externus m
-group
-action
-innervation
G: Lateral Rotators
A: Laterally rotate thigh at hip
I: Posterior branch of obturator n
Iliopsoas m
-group
-action
-innervation
G:Anterior Thigh
A: Flexion of the trunk
I: Femoral n
Sartorius m
-group
-action
-innervation
G: Anterior Thigh
A: Flex, ABDuct, laterally rotate thigh at hip and flex leg at knee
I: Femoral n
Rectus Femoris m
-group
-action
-innervation
G: Anterior Thigh (Quadriceps Femoris)
A: Flex thigh at hip and extend leg at knee
I: Femoral n
Vastus Lateralis m
-action
-innervation
A: Extend leg at knee
I: Femoral n
Vastus Medialis m
-action
-innervation
A: Extend leg at knee
I: Femoral n
Vastus Intermedius m
-action
-innervation
A: Extend leg at knee
I: Femoral n
Gracilis m
-action
-innervation
A: ADDuct thigh at hip and flex leg at knee
I: Anterior branch of obturator n
Pectineus m
-action
-innervation
A: ADDuct and flex thigh at hip
I: Femoral n
ADDuctor Longus m
-action
-innervation
A: ADDuct and flex thigh at hip
I: Anterior branch of obturator n
ADDuctor Brevis m
-group
-action
-innervation
G:Medial Thigh
A: ADDuct and flex thigh at hip
I: Anterior branch of obturator n
ADDuctor Magnus m (adductor and extensor parts)
-group
-action
-innervation
G: Medial Thigh
A: ADDuct and flex thigh at hip (adductor part) and extend thigh at hip (extensor part)
I: Posterior branch of obturator n (adductor n) and tibial part of sciatic n (extensor part)
Semitendinosus m
-action
-innervation
A: Extend thigh at hip and flex leg at knee
I: Tibial part of sciatic n
Semimembranosus m
-group
-action
-innervation
G:Posterior Thigh (Hamstring)
A: Extend thigh at hip and flex leg at knee
kickbutt
I: Tibial part of sciatic n
Biceps Femoris m (long and short head)
-action
-innervation
A: Extend thigh at hip and flex leg at knee (long head) and laterally rotate leg at knee (short head)
I: Tibial part of sciatic n (long head) and common fibular part of sciatic n (short head)
Tibialis Anterior m
-group
-action
-innervation
G: Anterior Leg Compartment
A: Dorsiflex and invert foot at ankle
I: Deep fibular n
Extensor Hallucis Longus m
-action
-innervation
A: Extend big toe
I: Deep Fibular n
Extensor Digitorum Longus m
-group
-action
-innervation
G: Anterior Leg Compartment
A: Extend toes 2-5
I: Deep fibular n
Fibularis (Peroneus) Tertius m
-group
-action
-innervation
G: Anterior Leg Compartment
A: Dorsiflex and evert foot at ankle
I: Deep fibular n
Fibularis (Peroneus) Longus m
-group
-action
-innervation
G: Lateral Leg Compartment
A: Evert foot at ankle
I: Superficial fibular n
Fibularis (Peroneus) Brevis m
-group
-action
-innervation
G: Lateral Leg Compartment
A: Evert foot at ankle
I: Superficial fibular n
Gastroctnemius m
-group
-action
-innervation
G: Superficial Posterior Leg Compartment
A: Plantar flex foot at ankle
I: Tibial n
Soleus m
-group
-action
-innervation
G: Superficial Posterior Leg Compartment
A: Plantar flex foot at ankle
I: Tibial n
Plantaris m (nickname - freshman nerve)
-group
-action
-innervation
G:Superficial Posterior Leg Compartment
A: Plantar flex foot at ankle
I: Tibial n
Popliteus m
-action
-innervation
A: Medially rotate leg at knee
I: Tibial n
Tibialis Posterior m
-action
-innervation
A: Plantar flex and invert foot at ankle
I: Tibial n
Flexor Digitorum Longus m
-group
-action
-innervation
G: Deep Posterior Leg Compartment
A: Flex toes 2-5
I: Tibial n
Flexor Hallucis Longus m
-group
-action
-innervation
G:Deep Posterior Leg Compartment
A: Flex toe 1
I: Tibial n
Extensor Digitorum Brevis m
-action
-innervation
A: Extend toes 1-4
I: Deep Fibular n
ABDuctor Hallucis m
-group
-action
-innervation
G: Plantar Surface Layer 1
A: ABDuct big toe
I: Medial Plantar n (MPN)
Flexor Digitorum Brevis m
-group
-action
-innervation
G: Plantar Surface Layer 1
A: Flex toes 2-5
I: MPN
ABDuctor Digiti Minimi m
-group
-action
-innervation
G:Plantar Surface Layer 1
A: ABDuct toe 5
I: Lateral plantar n (LPN)
Quadratus Plantae m
-action
-innervation
A: Flex toes 2-5
I: LPN
Lumbricals 1-4
-group
-action
-innervation
G: Plantar Surface Layer 2
A: Flex toes 2-5
I: LPN and MPN
Flexor Hallucis Brevis m
-group
-action
-innervation
G: Plantar Surface Layer 3
A: Flex big toe
I: MPN
ADDuctor Hallucis m
-action
-innervation
A: ADDuct big toe
I: LPN
Flexor Digiti Minimi Brevis m
-action
-innervation
A: Flex little toe
I: LPN
Plantar Interossei 1-3
-action
-innervation
A: ADDuct toes
I: LPN
Dorsal Interossei 1-4
-group
-action
-innervation
G: Plantar Surface Layer 4
A: ABDuct toes
I: LPN
Femoral Triangle is found in the upper _ of the _ surface of the thigh
1/3
anterior
3 boundaries of the femoral triangle:
Lateral: Sartorius m
Medial: ADDuctor Longus m, medial border
Superior: Inguinal Ligament
The inguinal ligament is derived from the_ of the _ _ muscle from the anterior abdominal wall
aponeurosis
external oblique muscle
The inguinal ligament extends from the _ _ _ _ (ASIS) to the _ _
anterior superior iliac spine
pubic tubercle
The roof of the femoral triangle is the _ _ muscle
Fascia Lata
The floor of the femoral triangle (laterally to medially) [3 items]:
Iliopsoas m
Pectineus m
ADDuctor Longus m
Contents of the femoral triangle (4 items)
Femoral n
Femoral a
Femoral v
Femoral canal
The pes anserinus is the collective insertion of 3 muscles into the upper medial surface of the tibia:
Satorius m
Gracilis m
Semiteninosus m
The _ _ is a diamond shaped area on the posterior aspect of the knee
popliteal fossa
The 4 boundaries of the popliteal fossa are:
Superior-Medial: Semimembranosus m and Semitendinosus m
Superior-Lateral: Biceps Femoris m
Inferior-Medial: Medial Head of Gastrocnemius m
Inferior-Lateral: Lateral head of gastrocnemius m and plantaris m
The roof of the popliteal fossa is merely the _ over the popliteal fossa
fascia
The floor of the popliteal fascia is composed of 2 items:
Popliteal surface of the femur
Oblique popliteal ligament
The oblique popliteal ligament is part of the tendon of insertion of the _ muscle which is reflected upwards and laterally to reach the _ condyle of the femur and involves the _ muscle
semimembranosus m
lateral
popliteus m
The oblique popliteal ligament contains 4 items:
Popliteal a
Popliteal v
Tibial n
Common Fibular n
From anterior to posterior 3 structures in the oblique popliteal ligament relate to each other:
Popliteal a
Popliteal v
Tibial n
The leg is subdivided into _ due to arrangements of bones, interosseus membrane, and fascia
compartments
2 Fascial extensions attach to the fibula laterally:
Anterior Intermuscular septum
Posterior Intermuscular Septum
One layer of fascia connects the posterior portion of the tibia with the fibula:
deep transverse fascia of the leg
The 3 fascia of the leg _ _ _ , _ _ _, and _ _ _ and the interosseus membrane subdivide the leg into compartments
Anterior intermuscular septum
Posterior intermuscular septum
Deep transverse fascia
The 4 compartments of the leg are:
Anterior compartment
Lateral Compartment
Superficial Posterior Compartment
Deep Posterior Compartment
The _ is the part of the lower limb distal to the ankle
foot
The _ of the foot is the superior surface
dorsum
The _ surface of the foot is the inferior surface
plantar
The _ is the posterior part of the plantar surface
heel
The _ is the anterior part of the plantar surface
sole
Toes are numbered 1-5 from _ to _
medial to lateral
The skin of the dorsum of the foot is _ and _.
thin and mobile
The skin of the plantar part of the foot is _ and _ bound to the subcutaneous tissue (fibrofatty pads)
thick and firmly
The plantar aponeurosis is a _ shaped connective tissue membrane between the _ _ of the plantar surface of the foot and the _ of the muscles in this area
triangle
subcutaneous tissue
tendons
The apex of the plantar aponeurosis attaches to the calcaneus _; its base is continuous with the fascia of the five toes _.
posteriorly
anteriorly