Lower Extremity (lecture/lab)

Question 1

What Limits Expansion of muscle, increase muscle efficiency, promotes return of Venus blood.

Answer 1

Deep / Investing Fascia

Question 2

Name the four compartments of innervation

Answer 2

Anterior, Posterior, Medial, Lateral

Question 3

What is the innervation of the posterior thigh muscles? (Except the short head-biceps femoris)

Answer 3

Sciatic nerve-tibial division OR tibial nerve

Question 4

The the Iliotibial tract of the fascia lata has a shared aponeurosis with what two areas of the body?

Answer 4

Gluteus Maximus, Tensor Fascial Lata (TFL)

Question 5

What posterior thigh muscle is the most superficial?

Answer 5

Semitendinosus

Question 6

What is the action and innervation of the biceps femoris (short head)?

Answer 6

Action: Knee flexion
Innervation: Common fibular division

Question 7

What is the most posterior of the posterior thigh muscles?

Answer 7

Semimembranosus

Question 8

List the muscles of the inferior posterior leg from superficial to deep.

Answer 8

Gastrocnemius, Plantaris, Soleus, Popliteus, Tibialis Posterior, Flexor digitorum Longus & Flexor Hallicus Longus

Question 9

What posterior thigh muscles insert into the pes anserine?

Answer 9

-Sartorius
-Gracilis
-Semitendinosus

Question 10

Biceps Femoris LH origin

Answer 10

ischial tuberosity

Question 11

Biceps Femoris LH insertion

Answer 11

head of fibula

Question 12

Biceps Femoris LH actions

Answer 12

knee flexion
rotation of tibia (when knee is flexed)

Question 13

Biceps Femoris LH innervation

Answer 13

sciatic nerve tibial division

Question 14

Biceps Femoris (LH & SH) artery

Answer 14

deep femoral artery

Question 15

Biceps Femoris SH origin

Answer 15

linea aspera

Question 16

Biceps Femoris SH insertion

Answer 16

head of fibula

Question 17

Biceps Femoris SH actions

Answer 17

knee flexion
rotation of tibia (when knee is flexed)

Question 18

Biceps Femoris SH innervation

Answer 18

common fibular nerve

Question 19

What muscles contribute to posterior pelvic tilt?

Answer 19

Hamstring, gluteus maximus, adductor Magnus

Question 20

What is the origin of the hamstrings?
(With exception of the BF short head)

Answer 20

Ischial Tuberosity

Question 21

What muscles insert at the pes anserine?
(proximal, medial, anterior tibial shaft)

Answer 21

Sartorius, gracilis, Semitendinosus

Question 22

What arteries innnervate the hamstrings?

Answer 22

Deep femoral artery (proximally) and popliteal artery (distally)

Question 23

What nerves innervation the hamstrings?

Answer 23

Sciatic nerve, Tibial division [L4-S3] <—Sacral Plexus [L4-S4]

Question 24

What actions do the hamstrings carry out?

Answer 24

Knee Flexion, Hip Extension (with exception of BF SH)

Question 25

Insertion of the Semimembranosus

Answer 25

Posterior Medial Condyle (Tibia); Medial Meniscus

Question 26

What is the insertion of the Biceps Femoris?

Answer 26

Fibular Head

Question 27

What nerve innervation the Biceps Femoris-SH?

Answer 27

Common Fibular Nerve (Sciatic Nerve [L4-S2], Fibular Division)

Question 28

What is the origin of the Biceps Femoris-SH?

Answer 28

Linea Aspera

Question 29

What arteries innervate the quadriceps muscles?

Answer 29

Lateral Femoral Cutaneous Artery<—Femoral Artery

Question 30

What nerves innervate the quadriceps?

Answer 30

Femoral Nerve [L2-L4]<—Lumbar Plexus [T12-L4]

Question 31

*What is the insertion of the iliopsoas?

Answer 31

Lesser Trochanter

Question 32

*What is the origin of the psoas major?

Answer 32

T12 vertebral body; L1-L5 IVD, Vertebral Bodies & Transverse Processes

Question 33

*What is the origin of the iliacus?

Answer 33

Iliac crest & Fossa; Anterior SI Ligaments

Question 34

What is the origin of the vastus lateralis?

Answer 34

Femoral greater trochanter & Linea Aspera (upper lateral lip)

Question 35

What is the role of the tensor vastus intermedius?

Answer 35

Increases the contractile efficiency of the quad muscles

Question 36

What is the origin of Sartorius?

Answer 36

ASIS

Question 37

What is the origin of rectus femoris?

Answer 37

AIIS

Question 38

What makes the rectus femoris different than all the other quadriceps muscles?

Answer 38

Is crosses two joints: both the knee and hip

Question 39

What is the purpose of the articularis genu?

Answer 39

Pulls suprapatellar bursa out of the way, allowing for complete knee extension

Question 40

What artery innervates the adductors?

Answer 40

Obturator artery

Question 41

What nerve innervates the adductors?

Answer 41

Obturator Nerve [L2-L4]<—Lumbar Plexus

Question 42

Where does the gracilis originate?

Answer 42

Inferior Pubic Symphysis

Question 43

Where does the pectineus originate?

Answer 43

Superior ramus of pubis

Question 44

Where does the pectineus insert?

Answer 44

Femoral pectineal line

Question 45

What is significant about the nerves that innervates the pectineus?

Answer 45

Innervates the femoral nerve 2/3 of the time and the Obturator nerve 1/3 of the time