Blood Vessels Quiz

Question 1

What are the 6 types of blood vessels?

Answer 1

Arteries
Arterioles
Capillaries
Venules
Veins
Vasa vasorum

Question 2

Briefly describe these 6 types of vessels:
1.) arteries
2.) arterioles
3.) capillaries
4.) venules
5.) veins
6.) vasa vasorum

Answer 2

1.) carry blood away from the heart TO tissues
2.) are small Arteries
3.) are microscopic vessels WITHIN tissues
4.) same as veins, just smaller
5.) return blood FROM tissues to heart
6.) vessels which supply O2 and nutrients to larger arteries and veins

Question 3

What is the lumen?

Answer 3

The hollow centre where the blood flows within artieries

Question 4

What are tunicas?

Answer 4

Coats that surround the lumen

Question 5

How many tunica layers surround the arteries? what are they?

Answer 5

3
Tunica interna (or intima)
Tunica media
Tunica externa ( or adventitia)

Question 6

What are the 3 types of arteries?

Answer 6

Elastic (conducting)
Muscular (distributing)
Anastomosis

Question 7

Describe some characteristics and examples of elastic arteries

Answer 7

.Tunica media contains more elastic fibres then smooth
.function to conduct blood from heart to medium sized muscular arteries
.PRESSURE RESERVOIRS

Examples: large arteries such as aorta, carotid, common iliac

Question 8

Describe some characteristics and examples of muscular arteries

Answer 8

. Medium sized thick walled arteries distribute blood from large arteries to body parts
. Tunica media has more smooth muscle
Capable of vasoconstriction and vasodilation to regulate flow of blood to structures

Examples:
Axillary, brachial, radial, splenic, mesenteric, femoral

Question 9

Describe some characteristics and examples of anastomosis arteries

Answer 9

.occurs when branches of two or more arteries supplying same body region are joined
. Permits blood supply to organs from more then one source

Examples:
Found in hand and foot, many joints, pelvis abdomen and brain

Question 10

An alternate route supplied by anastomosis is called___?

Answer 10

Collateral circulation

Question 11

Large arteries such as aorta, carotid and common iliac arteries are examples of what type of artery?

Answer 11

Elastic

Question 12

Medium sized thick walled arteries such as Axillary, brachial, radial, splenic, mesenteric and femoral are examples of what type of artery?

Answer 12

Muscular

Question 13

Arteries found in hands, feet, pelvis, abdomen and brain are called?

Answer 13

Anastomosis

Question 14

Small arteries that transfer blood to capillaries are called what?

Answer 14

Arterioles

Question 15

What is the function of arterioles?

Answer 15

Blood pressure;
Regulates blood flow from arteries to capillaries

Question 16

The artery that leads from the Arterioles to the capillary bed is called____?

Answer 16

Metarteriole

Question 17

Miscroscopic vessels are called____?

Answer 17

Capillaries

Question 18

What type of tissue makes up capillary walls?

Answer 18

Single layer squamous epithelial

Question 19

Where are capillaries found?

Answer 19

Extensive in liver, muscle, brain, kidney
Few in tendons and ligaments
None in epithelia, cornea and lens of eye and cartilage

Question 20

What are 3 types of capillaries?

Answer 20

1. Continuous capillaries
2. Fenestrated capillaries
3. Sinusoids

Question 21

What is the most common type of capillary?

Answer 21

Continuous capillaries

Question 22

Continuous capillary’s are formed by what type of cells?

Answer 22

Endothelial

Question 23

Where are continuous capillaries found?

Answer 23

Skeletal muscle, smooth muscle, connective tissue and lungs

Question 24

What do the fenestrated capillaries allow to cross?

Answer 24

Almost everything; medium proteins, but not formed elements and large proteins
( things can cross at a faster rate)

Question 25

Where are fenestrated capillaries found?

Answer 25

Kidneys, villi of sm intestine and endocrine gland

Question 26

What do sinusoids allow to cross?

Answer 26

Everything can cross including formed elements and large proteins

Question 27

Where are sinusoids found?

Answer 27

Liver, spleen, red bone marrow

Question 28

In what 4 ways to materials pass through capillary walls?

Answer 28

1. Directly across endothelial membranes through phospholipid bilateral or via transport molecules ( continuous capillaries)
2. Pinocytic vesicles ( continuous capillaries)
3. Fenestrations ( fenestrated capillaries)
4. Intercellular clefts ( especially large in sinusoids)

Question 29

What are venules?

Answer 29

When capillaries unite and carry blood from capillaries to veins

Question 30

What 3 veins return deoxygenated blood to the right atrium?

Answer 30

1. Coronary sinus
2. Inferior vena cava
3. Superior vena cava

Question 31

____________ veins return oxygenated blood to the _______ atrium

Answer 31

Pulmonary, left

Question 32

What 3 coats do veins possess?

Answer 32

1. Tunica interna ( thinner then artieries)
2. Tunica media ( much thinner with few smooth mm and elastic fibres)
3. Tunica externa (thickest layer consisting of collagen and elastic fibres)