blood

Question 1

What are antigens ?

Answer 1

Proteins on the surfaces of cells

Question 2

What is an antibody ?

Answer 2

A protein that is used by the immune system to identify and destro foreign objects

Question 3

Where are antibodies found ?

Answer 3

In the plasma

Question 4

Why are antibodies “Y” shaped ?

Answer 4

So that they can attach on to more than one foreign cell at a time, which forms blood clots

Question 5

What is agglutination ?

Answer 5

When antibodies form clumps while attacking foreign cells.

Question 6

What prevent blood loss by forming clots ?

Answer 6

Platelets

Question 7

Where is the plasma in the blood ?

Answer 7

The upper layer (55%)

Question 8

What is an erythrocyte ?

Answer 8

A red blood cell (RBC)

Question 9

What is the average life span of an RBC ?

Answer 9

120 days

Question 10

Where are old and worn out RBCs destroyed ?

Answer 10

the liver and spleen

Question 11

Where are RBCs produced ?

Answer 11

red bone marrow

Question 12

About how many RBCs are destroyed each second ?

Answer 12

2 million

Question 13

Where are the blood cells in the blood ?

Answer 13

the bottom layer (45%)

Question 14

What cells remove dead and drying cells, attack viruses and bacteria, and fight cancer cells ?

Answer 14

White blood cells

Question 15

What is a normal hematocrit (percentage of RBCs) ?

Answer 15

45%

Question 16

Do RBCs or WBCs have a nucleous ?

Answer 16

WBCs

Question 17

If there is low oxygen in the blood, what happens ?

Answer 17

more RBCs are made

Question 18

What is Polycythemia ?

Answer 18

a disorder where an excessive amount of RBCs are produced, making the blood think and more likely to clot.

Question 19

What is plasma ?

Answer 19

A non living liquid portion of the blood that helps to distribute heat, transport hormones and waste, and helps with clotting.

Question 20

Where are WBCs found ?

Answer 20

tissue fluid of lymphatic tissue, bone marrow, spleen, thymus or other organs

Question 21

How long can WBCs live ?

Answer 21

a couple hours - a year

Question 22

What is a condition where there are not enough RBCs or the RBCs do not have enough hemoglobin ?

Answer 22

Anemia

Question 23

What are the granular leokocytes ?

Answer 23

neutrophils, eosinophils, and basophils

Question 24

What is a lymphocyte’s job ?

Answer 24

to attack infected cells and cancer cells

Question 25

What are fragments of a call called megakaryocyte ?

Answer 25

Platelets