Blood vessels

Question 1

What are the blood vessels

Answer 1

They are are tubes that carry blood away from the heart toward the tissues of the
body and then return the blood to the heart

Question 2

What are the 5 types of blood vessels

Answer 2

1. Arteries - aorta
2. Arterioles
3. Capillaries
4. Venules
5. Veins - superior vena cava and inferior vena cava

Question 3

Where does the blood flows through?

Answer 3

Blood flows through the lumen of blood vessels.

Question 4

What are the 3 major layers of the walls of the blood vessels

Answer 4

1) tunica intima
2) tunica media
3) outer tunica externa

Question 5

What is the tunica intima composed of

Answer 5

1) endothelium and connective tissue

2) continuous with inner lining of heart (endocardium)

Question 6

What is the tunica media composed of

Answer 6

dense irregular collagenous connective tissue
-Vasomotor nerves
-Vaso vasora —small vessels supplying oxygen and nutrients to
tunica media and tunica externa

Question 7

What are some differences between walls of typical artery and typical vein

Answer 7

• Most arteries have much thicker tunica media than do veins

- Internal and external elastic lamina are much more extensive in arteries than in veins

Question 8

What are he two major types of arteries

Answer 8

a) large elastic (conducting) arteries

b) medium-sized muscular (distributing) arteries

Question 9

What are some characteristics of the large elastic arteries

Answer 9

1) Largest arteries in the body
2) The largest diameter among arteries
3) Elastic lamellae
4) Pressure reservoir

Question 10

What are some characteristics of the medium-sized muscular (distributing) arteries

Answer 10

1) Capable of greater vasoconstriction and vasodilation
2) Have a well-defined tunica media
3) Control blood flow

Question 11

What is an arteriole?

Answer 11

a branch of an artery that delivers blood to a capillary
network
1) regulate blood flow from arteries to
capillaries
2) regulate blood pressure

The metartiole is the terminal end
The precapillary sphincter the connective thing

Question 12

Venules

Answer 12

Capillaries unite
1) form post capillary venules
2) venules unite into muscular
venules.
3) venules deliver blood from
capillaries to veins.

Question 13

What are the 2 largest veins

Answer 13

superior vena cava and inferior vena cava

Question 14

2 characteristics of veins

Answer 14

1) Veins lack the external or internal elastic laminae

2) Often have valves

Question 15

What veins travel through the hypodermis

Answer 15

Superficial veins

Question 16

What veins travel below the fascia between skeletal muscles

Answer 16

Deep veins

Question 17

What is the respiratory pump

Answer 17

action of breathing causes pressure changes within the thoracic and
abdominal cavities
resulting in the compression of abdominal veins during inhalation.