A&P 2 Unit 19 (Lab) [Blood]

Question 1

Describe blood as a connective tissue.

Answer 1

Formed elements are suspended in the fluid plasma.

Question 2

List the 3 classes of formed elements present in blood, and state where they originate.

Answer 2

• Erythrocytes (Red Blood Cells; RBCs)
• Leukocytes (White Blood Cells; WBCs)
• Thrombocytes (Platelets)

All originate from Red Bone Marrow.

Question 3

Compare the relative abundance of blood cell types in the blood.

Answer 3

• RBCs- Most abundant
• WBCs- Relatively few
• Platelets- Relatively fewe

Question 4

Describe the role of hemoglobin in erythrocytes function.

Answer 4

• Transports oxygen
• Hemoglobin has a reversible binding with oxygen

Question 5

Observe and describe the physical appearance of RBCs in a peripheral blood smear.

Answer 5

• Big
• Rounded
• Disc-shaped
• Indented
• Biconcave Disc

Question 6

Observe and describe the physical appearance of platelets in a peripheral blood smear.

Answer 6

• Smallest
• Scattered
• Less than RBCs

Question 7

State the overall function of leukocytes in the body.

Answer 7

Play a role in the Immune System.

Question 8

Name the 5 types of WBCs

Answer 8

1. Neutrophils
2. Lymphocytes
3. Monocytes
4. Eosinophils
5. Basophil

Question 9

Which WBCs are Agranulocytes?

Answer 9

1. Lymphocytes
2. Monocytes

Question 10

Which WBCs are Granulocytes?

Answer 10

1. Neutrophils
2. Eosinophils
3. Basophils

Question 11

State the relative abundance of each type of WBC in blood.

Answer 11

1. Neutrophils
2. Lymphocytes
3. Monocytes
4. Eosinophils
5. Basophils

Question 12

Answer 12

Neutrophil

Question 13

Answer 13

Monocyte

Question 14

Answer 14

Basophil

Question 15

Answer 15

Lymphocyte

Question 16

Answer 16

Eosinophil

Question 17

Discuss RBC surface antigens that are relevant to the ABO and Rh blood groups.

Answer 17

• ABO Group
  
  • A antigen
  • B antigen
• Rh Group
  
  • Rh antigen

Question 18

*Antigens present in Type A

Answer 18

Anti- B antibodies

Question 19

*Antigens present in Type B

Answer 19

Anti- A antibodies

Question 20

*Antigens present in Type AB

Answer 20

No antibodies

Question 21

*Antigens present in Type O

Answer 21

Both Anti- A and Anti- B antibodies

Question 22

*Blood Typing

Answer 22

Blood samples are mixed with antisera (Anti-A, Anti-B, or Anti-D)

Question 23

*Agglutination

Answer 23

Occurs when the antibodies bind the corresponding RBC surface antigen. No agglutination means the antibodies did not detect the RBC surface antigen.

Question 24

*Transfusion Reaction

Answer 24

Antibodies in the recipient’s plasma agglutinate donor RBCs leading to hemolysis.

Question 25

*Describe when an Rh negative individual will produce anti-Rh antibodies.

Answer 25

• Persons with Rh negative blood do not have pre-formed antibodies against Rh factor. However, an Rh negative individiual will make anti-Rh antibodies if ever exposed to Rh positive blood.
• Clinically, we must assume that the Rh negative person may have been exposed to Rh positive blood at some point.
• Rh positive donor blood should never be given to an Rh negative recipient

Question 26

*Describe the etiology of hemolytic disease of the newborn.

Answer 26

Rh imcompatibility- between Rh negative mother and Rh positive fetus- is the cause of hemolytic disease of the newborn (HDN)

Question 27

*

Answer 27