Anatomy Muscles 1 Flashcards
Bulbospongiosus anterior attachment (male)
Contralateral bulbospongiosus muscle at the midline raphe
Bulbospongiosus posterior attachment
Perineal body
Bulbospongiosus action (male)
Compress the bulb of the penis to expel urine or semen
Bulbospongiosus innervation
Deep branch of the perineal n
Ischiocavernosus anterior attachment (male)
crus of the penis
Ischiocavernosus posterior attachment
ischial tuberosity and ischiopubic ramus
Ischiocavernosus action (male)
Forces blood from the crus of the penis into the distal part of the corpus cavernosum penis
Ischiocavernosus innervation
Deep branch of the perineal n
Superficial transverse perineal anterior attachment
Perineal body
Superficial transverse perineal posterior attachment
Ischial tuberosity
Superficial transverse perineal action
Provides support to the perineal body
Superficial transverse perineal innervation
Perineal n
Deep traverse perineal anterior attachment
perineal body
Deep transverse perineal posterior attachment
ischial tubersotiy
Deep transverse perineal action
provides support to the perineal body
Deep transverse perineal innervation
Perineal n
External urethral sphincter anterior attachment
Attaches to itself around the urethra
External urethral sphincter posterior attachment
Attaches to itself around the urethra
External urethral sphincter action
compresses the membranous urethra and stops the flow of urine
External urethral sphincter innervation
Deep branch of the perineal n.
Bulbospongiosus Anterior attachment (female)
Corpus cavernosum clitoris
Bulbospongiosus action (female)
compress the bulb of the clitoris
Ischiocavernosus anterior attachment (female)
crus of the clitoris
Ischiocavernosus action (female)
foces blood from the crus of the clitoris into the distal part of the corpus cavernosum
Pectineus proximal attachment
Pecten pubis and superior ramus of the pubis
Pectineus distal attachment
Pectineal line of the femur
Pectineus action
adducts the thigh, hip flexion, assists in medial rotation of hip
Pectineus innervation
Femoral n and obturator n
Illiopsoas distal attachment
lesser troachanter of the femur
Illiopsoas action
flexes the thigh
Sartorius proximal attachment
Anterior superior iliac spine
Sartorius distal attachment
medial surface of the proximal tibia
Sartorius action
flexes and lateral rotates the thigh, flexes and medially rotates the leg
Illiopsoas innervation
femoral n
Sartorius innervation
femoral n
Tensor fasciae lata proximal attachment
anterior superior iliac spine
Tensor fasciae lata distal attachment
Iliotibial tract
Tensor fasciae lata action
Abducts, medially rotates, and flexes the thigh
Tensor fasciae lata innervation
Superior gluteal
Rectus femoris proximal attachment
Anterior inferior iliac spine
Rectus femoris distal attachment
tibial tuberosity
Rectus femoris action
flexes the thigh and extends the leg
Rectus femoris innervation
femoral n
Vastus medialis proximal attachment
Medial lip of the linea aspera and intertrochanteric line
Vastus medialis distal attachment
Tibial tuberosity
Vastus medialis action
Extends the leg
Vastus medialis innervation
Femoral n
Vastus lateralis proximal attachment
Lateral lip of the linea aspera and greater trochanter
Vastus lateralis distal attachment
Tibial tuberosity
Vastus lateralis action
Extends the leg
Vastus lateralis innervation
Femoral n
Vastus intermedius proximal attachment
anterior and lateral surfaces of the femur
Vastus intermedius distal attachment
tibial tuberosity
Vastus intermedius action
Extends the leg
Vastus intermedius innervation
Femoral n
Gracilis proximal attachment
Body of pubis and inferior pubic ramus
Gracilis distal attachment
Superior part of medial surface of tibia
Gracilis action
Adducts the thigh; flexes and internally rotates the leg
Gracilis innervation
Obturator n
Adductor longus proximal attachment
Body of pubis inferior to pubic crest
Adductor longus distal attachments
Middle third of linea aspera
Adductor longus actions
Adducts the thigh
Adductor longus innervation
Obturator n
Adductor brevis proximal attachment
body of pubis and inferior pubic ramus
Adductor brevis distal attachment
pectineal line and proximal part of linea aspera
Adductor brevis action
Adducts the thigh
Adductor brevis innervation
Obturator n
Adductor magnus proximal attachment
Ischiopubic ramus and ischial tuberostiy
Adductor magnus distal action
adducts and extends the thigh
Adductor magnus innervation
Obturator n (adductor part), tibial division of the sciatic n (hamstring part)
Obturator externus proximal attachment
External margins of obturator foramen and obturator membrane
Obturator externus distal attachments
Trochanteric fossa of femur
Obturator externus actions
Laterally rotates the thigh
Obturator externus innervation
Obturator n.
Gluteus maximus distal attachment
Illiotibial tract and gluteal tuberosity
Gluteus maximus action
extends and laterally rotates the thigh
Gluteus maximus innervation
Inferior gluteal n
Gluteus medius proximal attachment
external surface of ilium between anterior and posterior gluteal lines and gluteal fascia
Gluteus medius distal attachment
Lateral surface of greater trochanter of the femur
Gluteus medius action
Abducts and medially rotates the thigh, keeps contralateral side from sagging
Gluteus medius innervation
Superior gluteal n
Gluteus minimus proximal attachment
Lateral surface of the ilium between the anterior and inferior gluteal lines
Gluteus minimus distal attachment
Anterior surface of greater trochanter of the femur
Gluteus minimus action
Abducts and medially rotates thigh, keeps contralateral side from sagging
Gluteus minimus innervation
Superior gluteal n
Tensor of fasciae lata proximal attachment
Anterior superior iliac spine
Tensor of fasciae lata distal attachment
Illiotibial tract
Tensor of fasciae lata action
abducts, medially rotates and flexes the thigh
Tensor of fasciae lata innervation
Superior gluteal n
Piriformis proximal attachment
Anterior surface of the sacrum
Piriformis distal attachment
Greater troachanter of the femur
Piriformis action
Laterally rotates the extended thigh, abducts the flexed thigh
Piriformis innervation
Anterior rami of S1 and S2
Obturator internus proximal attachment
internal margin of the obturator foramen and inner surface of the obturator membrane
Obturator internus distal attachment
Greater trochanter of the femur
Obturator internus actions
Laterally rotates the extended thigh, abducts the flexed thigh
Obturator internus innervation
Nerve to obturator internus
Superior gemellus proximal attachment
Ischial spine
Superior gemellus distal attachment
Greater trochanter of the femur and obturator internus tendon
Superior gemellus action
Laterally rotates the extended thigh, abducts the flexed thigh
Superior gemellus innervation
Nerve to obturator internus
Inferior gemellus proximal attachment
ischial tuberosity
Inferior gemellus distal attachment
greater trochanter of the femur and obturator internus tendon
Inferior gemellus action
Laterally rotates the extended thigh, abducts the flexed thigh
Inferior gemellus innervation
Nerve to quadratus femoris
Quadratus femoris proximal attachment
Ischial tuberosity
Quadratus femoris distal attachment
Quadrate tubercle
Quadratus femoris action
Laterally roates the thigh
Quadratus femoris innervation
Nerve to quadratus femoris
Biceps femoris proximal attachment
ischial tuberosity (long head), lateral lip of the linea aspera of femur (short head)
Biceps femoris action
Extends the thigh (only long head) and flexes the leg
Bicep femoris innervation
Tibial division of the sciatic n (long head) and common fibular division of the sciatic n (short head)
Semitendinosus proximal attachments
Ischial tuberosity
Semitendinosus distal attachments
Medial surface of the superior part of the tibia
Semitendinosus action
Extends the thigh and flexes and medially rotates the leg
Semitendinosus innervation
Tibial division of the sciatic n
Semimembranosus proximal attachment
Ischial tuberosity
Semimembanosus distal attachment
Posterior part of the medial condyle of the tibia
Semimembranosus action
extends the thigh and flexes and medially rotates the thigh
Semimembranosus innervation
tibial division of the sciatic n
Popliteus proximal attachment
Lateral surface of lateral condyle of femur and lateral meniscus
Popliteus distal attachment
Posterior surface of tibia superior to soleal line
Popliteus action
Unlocks fully extended leg, weak flexor of leg
Popliteus innervation
tibial n
Gastrocnemius proximal attachment
superior to the lateral and medial femoral condyles
Gastrocnemius distal attachment
posterior surface of calcaneus via calcaneal tendon
Gastrocnemius action
Plantarflexes the foot and flexes the knee
Gastrocnemius innervation
Tibial n
Plantaris proximal attachment
Lateral supracondylar line of the femur
Plantaris distal attachment
posterior surface of calcaneus via calcaneal tendon
Plantaris action
Plantarflexes the foot and flexes the knee
Plantaris innervation
tibial n
Soleus proximal attachment
soleal line of the tibia and head of the fibula
Soleus distal attachment
posterior surface of calcaneus via calcaneal tendon
Soleus actions
Plantarflexes the foot
Soleus innervation
Tibial n
Tibialis posterior proximal attachment
Tibia, fibula, and interosseus membrane
Tibialis posterior distal action
inverts and plantarflexes the foot
Tibialis posterior innervation
tibial n
Flexor digitorum longus proximal attachment
Medial part of posterior surface of tibia inferior to the soleal line
Flexor digitorum longus distal attachment
bases of the distal phalanges of the lateral four toes
Flexor digitorum longus innervation
tibial n
Flexor hallucis longus proximal attachment
inferior two thirds of the fibula and interosseous membrane
Flexor hallucis longus distal attachment
base of the distal phalanx of the great toe
Flexor hallucis longus actions
flexes the great toe and plantarflexes the foot
Flexor hallucis longus innervation
tibial n
Fibularis longus proximal attachments
head and superior two-thirds of lateral surface of fibula
Fibularis longus distal attachments
base of first metatarsal and medial cuneiform
Fibularis longus actions
Evert and plantarflex the foot
Fibularis longus innervation
Superficial fibular n
Fibularis brevis proximal attachment
inferior two thirds of lateral surface of fibula
Fibularis brevis distal attachment
Tuberosity of the fifth metatarsal bone
Fibularis brevis actions
Everts and plantarflexes the foot
Fibularis brevis innervation
Superficial fibular n.
Tibialis anterior proximal attachments
Lateral condyle and superior half of lateral surface of tibia
Tibialis anterior distal attachments
Base of first metatarsal and medial and inferior surfaces of medial cuneiform
Tibialis anterior actions
Dorsiflexes and inverts the foot
Tibialis anterior innervation
Deep fibular n
Extensor hallucis longus proximal attachment
middle part of anterior surface of fibula and interosseous membrane
Extensor hallucis longus distal attachment
dorsal aspect of base of distal phalanx of great toe
Extensor hallucis longus actions
extends great toe and dorsiflexes foot
Extensor hallucis longus innervation
Deep fibular n
Extensor digitorum longus proximal attachments
lateraly condyle of tibia and superior three-fourths of anterior surface of interosseous membrane
Extensor digitorum longus distal attachments
extensor expansion to distal phalanges of lateral four digits
Extensor digitorum longus actions
extends lateral four digits and dorsiflexes foot
Extensor digitorum longus innervation
deep fibular n
Fibularis tertius proximal attachments
inferior third of anterior surface of fibular and interosseous membrane
Fibularis tertius distal attachments
dorsum of base of fifth metatarsal
Fibularis tertius actions
dorsiflexes and everts foot
Fibularis tertius innervation
Deep fibular n
Extensor digitorum brevis proximal attachments
calcaneus, floor of tarsal sinus
Extensor digitorum brevis distal attachments
extensor expansions of digits 2-5
Extensor digitorum brevis actions
extends digits
Extensor digitorum brevis innervation
deep fibular n
Extensor hallucis brevis proximal attachments
calcaneus, floor of the tarsal sinus
Extensor hallucis brevis distal attachments
extensor expansion of digit 1
Extensor hallucis brevis action
extends great toe
Extensor hallucis brevis innervation
deep fibular n
Flexor digitorum brevis proximal attachments
calcaneal tuberosity and plantar aponeurosis
Flexor digitorum brevis distal attachments
middle phalanges of the lateral four toes
Flexor digitorum brevis action
Flexes toes 2-5
Flexor digitorum brevis innervation
medial plantar n
Abductor hallucis proximal attachments
medial process of tuberosity of calcaneus, flexor retinaculum, and plantar aponeurosis
Abductor hallucis distal attachments
medial side of base of proximal phalanx of first digit
Abductor hallucis action
Abducts and flexes first digit
Abductor hallucis innervation
medial plantar n
Abductor digiti minimi proximal attachments
medial and lateral processes of tuberosity of calcaneous, plantar aponeurosis, and intermuscular septa
Abductor digiti minimi distal attachments
lateral side of base of proximal phalanx of fifth digit
Abductor digiti minimi actions
abducts and flexes fifth digit
Abductor digiti minimi innervation
lateral plantar n
Quadratus plantae proximal attachments
medial surface and lateral margin of plantar surface of calcaneus
Quadratus plantae distal attachments
Posterolateral margin of tendon of flexor digitorum longus
Quadratus plantae action
flexes lateral four digits
Quadratus plantae innervation
lateral plantar n
Lumbricals proximal attachments
tendons of flexor digitorum longus
Lumbricals distal attachments
medial aspect of extensor expansion of lateral four digits
Lumbricals actions
Flexes proximal phalanges and extends middle and distal phalanges of digits 2-4
Lumbricals innervation
Medial plantar n (first), lateral plantar n (2-4)
Flexor hallucis brevis proximal attachment
plantar surfaces of cuboid and lateral cuneiforms
Flexor hallucis brevis distal attachment
both sides of base of proximal phalanx of first digit
Flexor hallucis brevis action
Flexes proximal phalanx of first digit
Flexor hallucis brevis innervation
medial plantar n
Adductor hallucis proximal attachments
bases of metatarsals 2-4 (oblique head), plantar ligaments of MTP (transverse head)
Adductor hallucis distal attachments
lateral side of base of proximal phalanx of first digit
Adductor hallucis actions
adducts first digit
Adductor hallucis innervation
deep branch of lateral plantar n
Flexor digit minimi proximal attachments
base of fifth metatarsal
Flexor digiti minimi distal attachments
base of proximal phalanx of fifth digit
Flexor digiti minimi actions
flexes proximal phalanx of fifth digit
Flexor digiti minimi innervation
superficial branch of lateral plantar n
Plantar interossei proximal attachments
plantar surface of metatarsals 3-5
Plantar interossei distal attachments
medial sides of bases of phalanges of digits 3-5
Plantar interossei actions
adducts digits 3-5 and flexes metatarsophalangeal joint
Plantar interossei innervation
lateral plantar n
Dorsal interossei proximal attachment
Adjacent sides of metatarsals 1-5
Dorsal interossei distal attachment
Medial side of proximal phalanx of second digit (first), lateral sides of proximal phalanx of digits 2-4 (second to forth)
Dorsal interossei actions
abducts digits 2-4 and flexes metatarsophalangeal joints
Dorsal interossei innervation
lateral plantar n