Lab 29-Blood

Question 1

Three types of formed elements found in blood include ____________, ____________, and ____________

Answer 1

erythrocytes (RBC), leucocytes (WBC), and platelets

Question 2

Why is blood classified as a type of connective tissue?

Answer 2

Because it consists of a nonliving fluid matrix (the plasma) in which living cells (formed elements) are suspended

Question 3

Which formed element found in blood are the most numerous blood cells and do not have a nucleus?

Answer 3

Erythrocytes (RBCs)

Question 4

The least numerous but largest of all agranulocytes is the ____________

Answer 4

monocyte

Question 5

When determining the ____________, you will centrifuge whole blood in order to allow the formed elements to sink to the bottom of the sample.

Answer 5

hematocrit

Question 6

Blood typing is based on the presence of proteins known as ____________ on the outer surface of the red blood cell plasma membrane

Answer 6

antigens

Question 7

True or False: If an individual is transfused with the wrong type blood, the recipient’s antibodies react with the donor’s antigens, eventually clumping and hemolyzing the donated RBCs.

Answer 7

true

Question 8

Individuals whose RBCs carry the ____________ are positive

Answer 8

Rh antigen (negative don’t have the Rh antigen)

Question 9

Once a blood sample is centrifuged, the blood separates into what three layers? (top to bottom)

Answer 9

plasma (~55%), buffy coat (<1%), erythrocytes (~45%) (hematocrit)

Question 10

The only formed element considered complete cells are ____________

Answer 10

WBCs, because they have a nucleus

Question 11

What is one way to test for anemia?

Answer 11

FInd the ratio of RBC volume (RBC count divided by total test tube volume). If lower than average that means anemia

Question 12

Why do anemics tire fast?

Answer 12

Because they have low RBCs which carry oxygen.

Question 13

If you have a high RBC count you have ____________

Answer 13

polycythemia (usually occurs in high altitude to compensate for less oxygen)

Question 14

What blood type is this? (which antigen(s) does this sample contain?)

Answer 14

Type AB (As ou can see, both Antigen and B are present because both have visible clumping)

Question 15

What blood type is this? (Anti-A typing serum is on the left, Anti-B typing serum is on the right)

Answer 15

Type B (because clumping only occurred with Anti B)

Question 16

What blood type is this? (Anti-A typing serum is on the left, Anti-B typing serum is on the right)

Answer 16

Type A (because clumping only occurred with ant-A serum)

Question 17

What blood type is this? (Anti-A typing serum is on the left, Anti-B typing serum is on the right)

Answer 17

Type O because no clumping occurred with anti-A or anti-B