Blood vessels and lymphatics

Question 1

What are the three layers of tunics in arteries?

Answer 1

intima
media
adventitia

Question 2

What is the structure of veins?

Answer 2

thin media with only a few small muscle fibres

Question 3

What are venules?

Answer 3

smaller veins that contain valves to prevent backflow

Question 4

What is the function of the lymphatic system?

Answer 4

helps the veins to remove tissue fluid (lymph) which is then filtered by lymph nodes

Question 5

What are the 3 main lymph node clusters?

Answer 5

inguinal - lower limb, buttock, lower back and abdominal wall
axillary - upper limb, thoracic walls and breast
cervical - drains head and neck

Question 6

What are arterioles?

Answer 6

arteries less than 0.5mm in diameter

Question 7

What do muscular arteries do when injured?

Answer 7

contract to prevent haemorrhage

Question 8

What are the main arteries of the upper limb?

Answer 8

subclavian 
axillary 
brachial 
radial 
ulnar

Question 9

What are the main arteries of the hand?

Answer 9

deep palmar arch

superficial palmar arch

Question 10

What are the main arteries of the lower limb?

Answer 10

femoral
popliteal
anterior and posterior tibial
fibular

Question 11

What are the main veins of the lower limb?

Answer 11

great saphenous

small saphenous

Question 12

What are the main veins of the upper limb?

Answer 12

the median cubital vein links the cephalic and basilic veins

Question 13

What do arteries become as they become thinner walled?

Answer 13

arterioles
metarterioles
capillaries
postcapillary venules