The vessels and nerves of the lower limb Flashcards Preview

Human Form and Function > The vessels and nerves of the lower limb > Flashcards

Flashcards in The vessels and nerves of the lower limb Deck (53):
1

How does the abdominal aorta end?

By dividing into the right an left common iliac arteries

2

What do the right and left common iliac arteries divide into?

The internal and external iliac arteries

3

What do the external iliacs become?

The femoral arteries in the thighs

4

Which artery comes off the femoral artery?

The popiteal artery (posterior to the knee)

5

Which artery follows after the popiteal artery?

The anterior and posterior tibial arteries

6

Overall what is the sequence of arteries of the lower limb from the aorta to the iliac arteries?

Abdominal aorta-> left and right common iliac artery-> right internal iliac and right external iliac

7

Overall what is the sequence of arteries of the lower limb from the iliac arteries to the leg?

Right external iliac-> right femoral-> right popilteal-> right anterior and right posterior tibial

8

Where do the common iliac arteries arise from?

Abdominal aorta, about level of fourth lumbar vertebrae

9

What is the internal iliac artery ?

Primary arteries of the pelvis

10

Where does the internal iliac artery begin?

At the bifurcation of common iliac arteries anterior to sacroiliac joint at level of lumbosacral intervertebral disc

11

Where does the internal iliac artery pass?

Pass posteriorly as they descend into pelvis and divide into anterior and posterior divisions

12

Is the external iliac artery smaller or larger than the internal iliac artery?

Larger

13

Where does the external iliac artery delay?

Descend along medial border of psoas major muscles following from pelvic brim, pass posterior to midportion of inguinal ligaments, and become femoral arteries as they pass beneath inguinal ligaments and enter the thigh

14

What is the femoral artery?

Continuation of external iliac artery as they enter the thigh

15

Where does the femoral artery pass?

Pass beneath sartorius muscle as they descend along anteromedial aspects of thighs

16

Where does the femoral artery follow after its passed the satorius muscle

Follow its course to distal end of thigh where they pass through opening in tendon of adductor magnus muscle to end at posterior aspect of knee

17

What happens when the femoral artery reaches the posterior artery of the knee?

Becomes popilteal artery

18

What is the popliteal artery?

Continuation of femoral arteries through popliteal fossa

19

What is the popliteal fossa?

Space behind the knee

20

Where does the popliteal artery descend?

Descend to inferior border of popliteus muscles, where they divide into anterior and posterior tibial arteries

21

What is the anterior tibial artery?

Descend from bifurcation of popliteal arteries at distal borders of popliteus muscles

22

Is the anterior tibial or posterior tibial artery the largest?

Posterior tibial artery

23

Where does the anterior tibial artery pass?

Pass over interosseous membrane of tibia and fibula

24

What does the anterior tibial artery become?

Dorsalis pedis arteries at ankles

25

What do the dorsal arteries branch into?

Give off transverse branch at first medial cuneiform bone called arcuate arteries that run laterally over the metatarsals

26

What do the arcurate arteries branch to?

Branch dorsal metatarsal arteries, which course along metatarsal bones.

27

What do dorsal metatarsal arteries branch into?

Terminate by dividing into dorsal digit arteries, which pass into toes

28

What are posterior tibial arteries?

Direct continuations of popliteal arteries, descend from bifurcation of popliteal arteries

29

Where do the posterior tibial arteries?

Pass down posterior muscular compartment of legs deep to soleus muscles
Pass posterior to medial malleolus at distal end of leg and curve forward toward plantar surfaces of feet
Pass deep to flexor retinaculum on medial side of feet

30

Where do posterior tibial arteries terminate?

Terminate by branching into medial and planar arteries

31

What other artery do the posterior tibial arteries give rise to

Fibular (perinoeal) arteries in upper third of leg

32

Where do the smaller medial plantar arteries pass?

Along the medial side of sole

33

Where do the larger lateral plantar arteries pass?

Angle toward lateral side of the sole and unite with branch of dorsalis pedis arteries of foot to form plantar arch

34

Where does the plantar arch begin?

Begins at the base of fifth metatarsal and extends medially across metatarsals

35

What artery branches of the plantar arch?

Plantar metatarsal arteries, which course along plantar surface of metatarsal bones

36

Where do plantar metatarsal arteries terminate?

Terminate by dividing into plantar digit arteries that pass into the toes

37

Where's the obturatory artery?

Emerges out of the pelvis- travel interiorly from iliac artery
Supply anterior portion of femoral

38

What does the internal iliac artery supply?

Goes down into pelvis and provides blood

39

What do the superior and inferior gluteal artery supply?

The buttocks

40

Is the amount of blood higher in the internal or external iliac?

External iliac

41

Where do the deep veins drain?

Converge and drain eventually into the femoral vein

42

How many veins flank an artery?

Two deep veins for each artery

43

Where does the small saphenous drain?

Popliteal

44

Where does the great saphenous drain?

Femoral

45

Why are there valves in veins?

Allows undirectional flow
Prevents the backflow of blood

46

What do perforating (communicating) veins do?

Connect the two systems

47

Do perforating veins have valves?

Yes

48

Why do perforating veins have valves

Allow flow from the superficial to the deep network

49

What are the three major nerves for motor and sensory innervation?

Femoral
Obturator
Sciatic

50

What are the characteristics of the Sciatic nerve?

Longest and thickest of the body

51

What are the characteristics of the Femoral and Obturator nerves?

Have the most innervation

52

What are the cutaneous nerves?

Lateral cutaneous of the thigh
Posterior cutaneous of the thigh
Other cutaneous branches of the 3 major nerves

53

What is meant by cutaneous supply?

Cutaneous supply- supply of skin and nerves