Lower Limb Muscles, Knee Joint, and Muscles of the Trunk Flashcards
What is the diaphragm?
dome-shaped muscle separating the thoracic cavity from the abdominal cavity
What is the phrenic nerve?
thin and long; behind the lung
What are the external intercostals?
In-between the ribs; striations go toward the midline; more in the middle of the back
What are the internal intercostals?
In-between the ribs; striations go away from the midline; more on the sides of the body
What is the transversus thoracis?
all across the inside of the ribs
What is the external oblique?
the most superficial muscle on the side of the abdomen; points down
What is the internal oblique?
the middle muscle on the side of the abdomen; points up
What is the transversus abdominis?
most deep muscle of the lateral abdominal wall; crosses your abdominal below the internal oblique
What is the rectus abdominis?
on the sides of the linea alba; runs vertical
What is the origin of the rectus abdominis?
pubic crest; pubic symphysis
What is the insertion of the rectus abdominis?
costal cartilage of ribs 5-7; xiphoid process
What is the rectus sheath?
Thin sheet that is on both sides of the rectus abdominis
What is the linea alba?
in-between the rectus abdominis
What is the psoas minor?
What is the psoas major?
Round muscle adjacent to the iliacus
What is the iliacus?
on top of the iliac fossa
What is the inguinal ligament?
Goes from the anterior superior iliac spine to the pubic tubercle
What is the quadratus lumborum?
superior to the iliacus, posterior to the kidney
What is the trapezius?
large diamond shaped muscle on the upper back and neck
What is the serratus posterior superior?
What is the serratus posterior inferior?
What is the spinalis?
most medial muscle group of erector spinae; closest to the spine
What is the longissimus?
intermediate muscle group of erector spinae; the longest one
What is the iliocostalis?
most lateral muscle group of erector spinae; closest to the side
What is the splenius?
deep to the trapezius; has two heads
What is the semispinalis?
deep to the splenius on the back and neck
What are the suboccipital muscles?
four small muscles deep to the splenius and semispinalis; attach to the occipital bone
How many suboccipital muscles are there?
4
What is the gluteus Maximus?
largest and most superficial gluteal muscle
What is the gluteus medius?
middle gluteal muscle; under the gluteus maximus
What is the origin of the gluteus medius?
gluteal surface
What is the insertion of the gluteus medius?
greater trochanter
What is the gluteus minimus?
deepest gluteal muscle
What is the tensor fasciae latae?
deep to the iliotibial tract
What is the iliotibial tract?
Sheet that goes down the lateral side of the thigh; also called the IT band
What is the piriformis?
triangle shaped muscle inferior to gluteus medius
What is the superior gemellus?
below the piriformis
What is the obturator internus?
covers the inside of the obturator foramen
What is the inferior gemellus?
inferior to the obturator internus
What muscle splits the superior and inferior gemellus?
obturator internus
What is the quadratus femoris?
inferior to the inferior gemellus; looks like a square at the top of the femur
What is the obturator externus?
covers the external side of the obturator foramen
What is the femoral nerve?
goes on top of the iliopsoas
What is the iliopsoas?
where the posts major and iliacus join; front of the hip; makes a V with pectineus
What is the pectineus?
small muscle medial to the iliopsoas; makes a V with iliopsoas
What is the sartorius?
runs diagonally across the anterior side of the thigh from the anterior superior iliac spine to the medial surface of the tibia
What is the origin of sartorius?
anterior superior iliac spine
What is the insertion of sartorius?
proximal part of medial surface of the tibia
What does PPMST stand for?
proximal part of the medial surface of the tibia
What are the quadricep muscles?
rectus femoris, vastus lateralis, vastus medialis, vastus intermedius
What is the rectus femoris?
runs vertically on the anterior side of the thigh
What is the vastus lateralis?
lateral to the rectus femoris; IT band covers a lot of it
What is the vastus mdialis?
runs vertically on the medial side of the thigh; looks like a tear drop
What is the vastus intermedius?
runs deep the rectus femoris
What muscles are in the anterior compartment of the thigh?
femoral nerve, ilipsoas, pectineus, sartorius
What muscles are part of the medial compartment of the thigh?
gracilis, adductor longus, adductor brevis, adductor magnus
What is the gracilis?
inside the thigh; in the no gracias zone; splits front and back
What is the origin of the gracilis?
inferior pubic ramus
What is the insertion of the gracilis?
proximal part of the medial surface of the tibia
What is the adductor longus?
most superficial adductor on medial side of the thigh; the long one
What is the adductor brevis?
small muscle between the adductor longus and the adductor magnus; brevis in the crevice
What is the adductor magnus?
big one in the back
What muscles are part of the hamstrings?
semimembranosus, semitendinosus, biceps femoris, sciatic nerve, tibial nerve, common fibular nerve
What is the semimembranosus?
medial muscle; looks like a membrane on tops; scales of a fish
What is the semitendinosus?
medial muscle; superficial to semimembranosus; has a long tendon
What is the biceps femoris?
has two heads and helps flex your knee
What is the sciatic nerve?
big nerve on the posterior side and comes out of the greater sciatic notch
What is the tibial nerve?
medial part of the split from the sciatic nerve that goes down the tibia
What is the common fibular nerve?
lateral part of the split from the sciatic nerve
What muscles are part of the knee joint?
medial meniscus, lateral meniscus, anterior cruciate ligament, posterior cruciate ligament, lateral collateral ligament, medial collateral ligament
What is the medial meniscus?
between the tibia and the femur on the medial side
What is the lateral meniscus?
between the tibia and the femur on the lateral side
What is the anterior cruciate ligament?
goes between the inside of the femur and the tibia on the anterior side
What is the posterior cruciate ligament?
goes between the inside of the femur and the tibia on the posterior side
What does ACL stand for?
anterior cruciate ligament
What does PCL stand for?
posterior cruciate ligament
What is the lateral collateral ligament?
lateral surface of the knee joint, smaller than the MCL
What is the medial collateral ligament?
medial surface of the knee joint, larger than the LCL
What does MCL stand for?
medial collateral ligament
What does LCL stand for?
lateral collateral ligament
What are the muscles of the anterior compartment of the leg?
tibialis anterior, extensor hallucis longus, extensor digitorum longus, fibularis tertius
What is the tibialis anterior?
comes anterior to the medial malleolus; goes diagonal; flexes your foot
What is the origin of the tibialis anterior?
lateral surface of the tibia
What is the insertion of the tibialis anterior?
medial cuneiform and 1st metatarsal
What is the extensor hallucis longus?
most superficial that connects to the big toe
What is the extensor digitorum longus?
more lateral muscles that go to the smaller toes
What is the fibularis tertius?
6th toe; lateral side of the foot
What muscles are in the lateral compartment of the leg?
fibularis longus, fibularis brevis
What is the fibularis longus?
superficial muscle of the lateral leg; goes around the ankle
What is the origin of the fibularis longus?
lateral surface of the fibula
What is the insertion of the fibularis longus?
medial cuneiform and 1st metatarsal
What two muscles insert at the medial cuneiform and 1st metatarsal?
tibialis anterior and fibularis longus
What two muscles originate from the lateral surface of the tibia?
tibialis anterior and fibularis longus
What is the fibularis brevis?
wraps around the lateral malleolus and is deep to the fibularis longus
What are the muscles of the posterior compartment of the leg?
gastrocnemius, soleus, planters, calcanea tendon, popliteus, tibialis posterior, flexor digitorum longus, flexor hallucis longus
What is the gastrocnemius?
big calf muscle on the outside that you can see when you flex your calf
What is the soleus?
muscle deep to the gastrocnemius and plantaris
What does Grass is Planted in Soil mean?
gastrocnemius, plantaris, soleus
What is the plantaris?
small muscle on the posterior side of the knee; is a small muscle and has a long tendon
What is the calcaneal tendon?
connects to the calcaneus, runs on the very back of your ankle area; commonly known as the achilles tendon
What is the popliteus?
deep muscle in the posterior region of the knee; table for the plantaris to sit on
What is the tibialis posterior?
first thing that comes posterior to the medial malleolus
What is the flexor digitorum longus?
comes just after the tibialis posterior
What is the flexor hallucis longus?
biggest one that goes to the big toe
What does Tom, Dick, And a Very Nervous Hal stand for?
tibialis posterior, flexor digitorum longus, vein and tibial nerve, flexor hallucis longus
What is the origin of the flexor hallucis longus?
posterior surface of the fibula
What is the insertion of the flexor hallucis longus?
1st digit
What are the muscles of the foot?
extensor hallucis brevis, extensor digitorum brevis
What is the extensor hallucis brevis?
below the extensor hallucis longus; comes from across the foot
What is the extensor digitorum brevis?
below the extensor digitorum longus of the smaller toes
What actions does the gluteal region do?
abduction, extension, and rotation at the hip joint
What actions does the posterior compartment of the thigh do?
extension at the hip joint, flexion at the knee joint
What actions does the anterior compartment of the thigh do?
flexion at the hip joint, extension at the knee joint
What actions does the medial compartment of the thigh do?
adduction at the hip joint
What actions does the anterior compartment of the leg do?
dorsiflexion of the foot, extension of the toes
What actions does the lateral compartment of the leg do?
eversion of the foot
What actions does the posterior compartment of the leg do?
plantar flexion of the foot, flexion of the toes
What nerve innervates the anterior compartment of the thigh?
femoral nerve
What does the femoral nerve innervate?
the anterior compartment of the thigh
What nerve innervates the posterior compartment of the thigh?
sciatic nerve
What does the sciatic nerve innervate?
the posterior compartment of the thigh
What nerve innervates the posterior compartment of the leg?
tibial nerve
What does the tibial nerve innervate?
the posterior compartment of the leg
What nerve innervates the anterior and lateral compartments of the leg?
common fibular nerve
What does the common fibular nerve innervate?
the anterior and lateral compartments of the leg