Blood vessels - cardiovascular system

Question 1

Blood is a connective tissue, what is it divided into?

Answer 1

55 percent plasma, 45 percent red blood cell (Erythrocytes), <1percent white blood cells and platelets

Question 2

What is albumin?

Answer 2

Big protein that is responsible for the maintenance of appropriate osmotic pressure, binding and transporting of various substances like hormones.

Question 3

Where is the protein albumin?

Answer 3

The plasma

Question 4

What are fibrinogens?

Answer 4

Protein that holds platelets together which helps clot the blood.

Question 5

Where is the protein fibrinogen found?

Answer 5

In the plasma

Question 6

What is plasma made out of?

Answer 6

91% water, 7% proteins such as albumin, 2% nutrients such as glucose, amino acid and hormones.

Question 7

How much blood do the coroted arteries take to the brain?

Answer 7

About 70 percent

Question 8

How many main arteries are there?

Answer 8

6

Question 9

What blood vessel can regulate how much blood goes to each organ and can dictate where the blood needs to go?

Answer 9

Arteries

Question 10

How big is a red blood cell in diameter?

Answer 10

8 micron

Question 11

What is another name for a red blood cell?

Answer 11

Erythrocytes

Question 12

What do the erythrocytes do?

Answer 12

Go through the capillaries to pick up oxygen and carbon dioxide

Question 13

Whats another name for a white blood cell?

Answer 13

Lymphocyte

Question 14

How thick is the red blood cell?

Answer 14

one cell thick

Question 15

What does sickle cell do the the erthrocytes?

Answer 15

makes the cells abnormally shaped meaning less oxygen can be picked up.

Question 16

What is a fibroblast?

Answer 16

A cell that helps the formation of connective tissue

Question 17

How many layers does the blood vessels have?

Answer 17

They all have 3 apart from the capillaries.

Question 18

How many layers do the capillaries have?

Answer 18

The capillary wall is one cell thick.

Question 19

What is the outside layer of a blood vessel called?

Answer 19

Tunica Adventitia (externa)

Question 20

What does the tunica adventitia consist of?

Answer 20

Loose connecitve tissue that can often merge with neighboring blood vessels, nerves and other organs.

Question 21

What is the middle layer called?

Answer 21

Tunica media

Question 22

What does the tunica media consist of?

Answer 22

Smooth muscle, collagen and elastic tissue

Question 23

What does the middle layer do?

Answer 23

Strengthens vessel, prevents blood pressure from rupturing them.

Question 24

What can vasomotion do?

Answer 24

Change the vessel in diameter brought about by the smooth muscle.

Question 25

What is the inside layer?

Answer 25

Tunica intima

Question 26

Where is the tunica intima?

Answer 26

Lines the blood vessel and is exposed to the blood endothelium.

Question 27

What is the blood endothelium?

Answer 27

Simple squamous epithelium overlying a basement membrane and a sparse layer of loose connective tissue.

Question 28

What acts as a selectively permaeble barrier?

Answer 28

Tunica intima

Question 29

What does the tunica intima do?

Answer 29

Secretes chemicals that stimulate the dilation and constriction of the blood vessel.

Question 30

What happens when the tissue around the vessel is inflamed?

Answer 30

The endothelial cells in the tunica intima produce adhesion molecules that induce leukocytes to adhere to the surface.