4

Question 1

Forms a closed circuit of tubes that carry blood throughout the body?

Answer 1

Blood vessels

Question 2

Types of Blood Vessels?

Answer 2

• capillaries
• arteries
• veins

Question 3

Arteries?

Answer 3

o Large vessels
o Carry blood from heart to tissues of body.
o Carry oxygenated blood, except pulmonary arteries.
o Thick walls-need to withstand pressure produced when heart pushes blood into them

Question 4

Capillaries?

Answer 4

o Smallest blood vessels
o Connect arteries to veins
o Bring oxygen and nutrients(glucose) to cells and removes CO2, and other wastes from cells.
o Only one cell thick (epithelial cell)

Question 5

Veins

Answer 5

o Transport blood away from capillaries& carry it toward heart. o Have valves
o carry deoxygenated blood except pulmonary veins.
o Thinner vessel walls with less smooth muscles than arteries

Question 6

Layers in the veins and arteries?

Answer 6

1. Tunica adventitia: Outermost layer made up of connective tissue fibers to make the wall of the vessels tighter so that it will not burst under pressure.
2. Tunica media: Middle layer made up of smooth muscle tissue and a thin layer of elastic fibrous tissue.
3. Tunica intima: Is the inner layer and made up of a single layer of squamous epithelial cells.(endothelium)

Question 7

Capillary wall is composed only of one layer……..

Answer 7

the tunica intima or endothelium

Question 8

The force of blood on the wall of the arteries is known as?

Answer 8

blood pressure

Question 9

What is defined as the maximum pressure in the arteries exerted during
ventricular contraction?

Answer 9

Systolic pressure

Question 10

What is the minimum pressure exerted when ventricles relax and fill

Answer 10

Diastolic pressure

Question 11

What’s the normal B.P.

Answer 11

120/80