Biol 2325 - Homework 13

What is the correct route that a drop of blood would follow as it flows through the following vessels? 1. external iliac artery 2. popliteal artery 3. anterior tibial artery 4. common iliac artery 5. femoral artery 6. dorsalis pedis (right dorsal artery of foot) artery

4, 1, 5, 2, 3, 6

Identify the structure which prevents the posterior sliding of the tibia (and anterior sliding of the femur) when the knee is flexed, e.g., when walking down stairs or a steep incline.

B

Which of the following statements regarding the quadriceps femoris is correct?

Rectus femoris originates from the anterior inferior iliac spine.

What is the action of the plantar interossei?

adduct toes

Select the muscle(s) served by the obturator nerve.

adductor muscles of thigh

Which ligament is stretched or torn in about 70% of all serious knee injuries?

anterior crucial ligament

The tibia, fibula, anterior muscles of the leg, dorsal muscles of the foot, tarsal bones, metatarsal bones, and phalanges receive blood directly from the

anterior tibial arteries

Which of the following is NOT a component of the quadriceps femoris?

biceps femoris

Injury of which branch of the sciatic nerve causes foot drop?

common fibular nerve

The muscles of the anterior leg compartment work synergistically to __________ the foot.

dorsiflex

A muscle that crosses the ankle joint anteriorly is capable of primarily ____________ the ankle joint.

dorsiflexing

The muscles of the posterior compartment of the thigh _____ the thigh and _____ the leg.

extend; flex

What is the action of the rectus femoris?

extends leg

The sartorius performs all of the following actions except:

extension of the leg at the knee

The quadriceps femoris is a knee __________ used to rise from a seated position.

extensor

Select the muscle(s) served by the femoral nerve.

extensor muscles of knee joint

The femoral nerve is a branch of the sciatic nerve.

false

The arrow is pointing to the N part of the VAN (vein, artery, nerve) structures of the anterior thigh. What is this nerve called?

femoral

What is the action of the flexor digitorum brevis?

flexes toes (2-5)

Which of the following is a deep muscle of the posterior leg compartment?

flexor hallucis longus

In the figure shown (posterior superficial view), what muscle is indicated?

gastrocnemius

Standing on your tiptoes requires contraction of which lower leg muscle?

gastrocnemius

Select the muscle(s) served by the tibial nerve.

gastrocnemius and soleus muscles

Select the muscle(s) served by the inferior gluteal nerve.

gluteus maximus

Which of the following originates on the pubis and inserts on the medial part of the tibia?

gracillis

Which vein of the lower limb is clinically significant in using it sometimes for artery bypass grafting?

great saphenous vein

The quadriceps femoris in the anterior compartment of the thigh is antagonized by the ___________ in the posterior compartment of the thigh.

hamstring muscles

The knee is considered a modified

hinge joint

The rectus femoris originates on the _________.

ilium

The hamstring muscles all originate at the __________ and insert on the tibia.

ischial tuberosity

The muscles of the posterior leg compartment are responsible for ____________ of the foot.

plantar flexion

Muscles of the distal thigh, skin of the knee region, muscles of the proximal leg, knee joint, femur, patella, tibia, and fibula all receive blood directly from the

popliteal arteries.

The posterior and lateral muscle compartments of the leg, plantar muscles of the foot, tibia, fibula, tarsal, metatarsal, and phalangeal bones all receive blood directly from the

posterior tibial arteries

Which muscle is part of the anterior compartment of the thigh?

rectus femoris

Which of the following muscles would not flex the knee joint?

rectus femoris

The femoral triangle, shown in the figure, is defined superiorly by the inguinal ligament, medially by the lateral border of the adductor longus muscle, and laterally by medial border of what muscle?

sartorius

Which of the following is an anterior muscle that flexes the knee?

sartorius

Which muscle inserts to the calcaneus via the Achilles (calcaneal) tendon?

soleus

Which of the following muscles belongs to the posterior leg compartment?

soleus

Which best describes the sartorius?

tailor's muscle

The sciatic nerve is actually made of two nerves bound together by a common sheath of connective tissue. Which two nerves make up the sciatic nerve?

tibial and common fibular

Select the muscle(s) served by the common fibular nerve.

tibialis anterior and fibularis (peroneal) muscles

The common iliac veins, femoral veins, popliteal veins, and posterior/anterior tibial veins are deep veins of the lower legs.

true

The flexor hallucis brevis, located in the third layer of the intrinsic foot muscles, flexes the big toe.

true

The major artery of the legs is the femoral artery.

true

Tibialis anterior and tibialis posterior muscles both invert the foot.

true