Types, Structure And Function Of Blood Vessels

Question 1

Arteries carry blood in which direction (relating to the heart)

Answer 1

Away from the heart

Question 2

Which artery actually carries blood to the heart instead of away

Answer 2

The pulmonary ateries

Question 3

What are the pulmonary arteries rich in containing

Answer 3

Oxygen-rich blood

Question 4

What do artery walls contain

Answer 4

Several layers of thick elastic fibres and muscle

Question 5

Which is the largest artery

Answer 5

The aorta

Question 6

The aorta’s thick elastic walls deal with what

Answer 6

The surge of blood leaving the heart

Question 7

As blood enters the arteries, what do they do to maintain the flow of blood

Answer 7

Expand and recoil

Question 8

What is the pulse we detect in the neck or wrist (where large arteries are close to the surface)

Answer 8

The arteries expanding and recoiling

Question 9

Arteries branch into smaller distributive arteries, what do these eventually become

Answer 9

Arterioles

Question 10

Arterioles are very small arteries that lead to what

Answer 10

Capillary beds in the tissues

Question 11

Distributive arteries have muscular walls so that what

Answer 11

They can regulate blood flow to where it is needed

Question 12

Arteries take blood with oxygen and nutrients to what

Answer 12

Capillary beds

Question 13

There are masses of interconnected capillaries that surround and interweave between what

Answer 13

Cells and tissues

Question 14

A capillary is a microscopic tube with walls of how many cells thick

Answer 14

One cell thick

Question 15

What are the capillaries covered with

Answer 15

A sieve-like basement membrane

Question 16

Capillaries supply the tissues with oxygen and nutrients whilst removing what

Answer 16

Waste products such as carbon dioxide

Question 17

Plasma leaves the capillaries and enters small blood vessels known as what

Answer 17

Venules

Question 18

Venules join together to form what

Answer 18

Larger tubes or veins

Question 19

Veins have large internal what

Answer 19

Diameters or lumens

Question 20

The walls of a vein are different to arteries, how is this

Answer 20

They are much thinner and contain less muscle and elastic tissue
With the exception of the pulmonary veins, veins carry deoxygenated blood back to the heart

Question 21

Because of the low pressure of blood in the veins, where are they often burried

Answer 21

Between our body muscles, so that movements of the body help squeeze blood along

Question 22

To ensure blood flows in the right direction, veins have valves throughout their length - what is the technical term for this

Answer 22

Preventing backflow

Question 23

Blockages in the veins cause what

Answer 23

Varicose veins