A&P 2 lab exam 2

Carol is a healthy 20-year-old female with no history of bleeding disorders. Which coagulation time is most likely hers?

4 minutes

Which would be a normal hematocrit value for a healthy adult female?

40

Which of the following statements concerning blood is true? White blood cells outnumber red blood cells.Red blood cells function in immunity.All formed elements are produced in red bone marrow.Platelets transport oxygen.Lymphocytes are the most numerous type of white blood cell

All formed elements are produced in red bone marrow

Which of the following substances is found in plasma? Oxygen All of these substances are found in plasma .Sodium ions Insulin Glucose

All of these substances are found in plasma.

What might a low hematocrit value indicate?

Anemia

What antibodies are present in the plasma of a patient with O+ blood?

Anti-A, Anti-B

What protein is responsible for tagging foreign particles, pathogens, or blood for destruction?

Antibodies

Patient JT's blood-typing chart showed agglutination only to the anti-B serum. What is the patient's blood type?

B-

Which leukocyte becomes a mast cell when it moves into connective tissue?

Basophil

Which leukocyte type migrates from the blood into the tissues and becomes a mast cell? Lymphocyte Eosinophil Monocyte Basophil Neutrophil

Basophil

In this activity the formed elements will be separated using what type of lab instrument? Fume hood Sphygmomanometer Centrifuge Stethoscope

Centrifuge

What is the purpose of a differential white blood cell count?

Determine the percentage of each leukocyte in a sample of blood

You are examining a human blood smear under the microscope and note a large cell with a bilobed nucleus and orange-red granules in the cytoplasm. Identify the cell

Eosinophil

You are about to examine a blood smear from a patient who is suspected of being infected by a parasitic worm. What white blood cells would be present in elevated numbers due to such an infection?

Eosinophils

Of the descriptions given, which is consistent with an abnormal blood smear?

Eosinophils outnumbered lymphocytes.

Which formed element contains hemoglobin? Thrombocyte Erythrocyte Leukocyte

Erythrocyte

What is hemostasis?

It is the process of blood clotting to reestablish a closed vascular system

You are examining a human blood smear under the microscope and note a cell with a large, un-lobed nucleus that takes up almost the entire cell volume and violet granules in the cytoplasm. Identify the cell

Lymphocyte

Which two leukocyte types are classified as agranulocytes?

Monocytes and lymphocytes

Which three leukocytes are classified as granulocytes?

Neutrophils, basophils, and eosinophil

Which statement is the best reason for an elevated white blood cell count?

Patient has a systemic bacterial infection.

What is a hematocrit?

Percentage of erythrocytes in a blood sample

Which of the following types of formed elements is produced when a megakaryocyte fragments? Basophil Erythrocyte All of the choices are correct .Platelet Neutrophil

Platelet

Does hemostasis involve a positive feedback mechanism or a negative feedback mechanism?

Positive feedback

What do platelets do to aid coagulation?

Release chemicals that stimulate clotting

How does a granulocyte differ from an agranulocyte?

The presence or absence of visible granules in the cytoplasm

What do the following statements have in common: overhydration, vitamin B12 deficiency, bleeding, and decreased erythrocyte production?

They are all causes of anemia.

What do the following statements have in common: dehydration, hypoxia, bleeding, and increased erythrocyte production?

They are all causes of polycythemia

In this activity you will be using a heparinized capillary tube. What is the function of heparin?

To prevent blood from clotting in the tube

Which blood type is known as the universal recipient?

Type AB

Which blood type is known as the universal donor?

Type O

Antibodies react with foreign proteins to cause ___________, or the clumping of the cells.

agglutination

An individual with type B blood has ______ on the plasma membranes of the red blood cells and __________ in the plasma

antigen B; anti-A antibodies

Proteins located on the plasma membrane of red blood cells are called ________________.

antigens

The hematocrit, or packed cell volume, is the percentage of ___________ in a volume of a blood sample.

erythrocytes

Platelets mediate the process of __________, which is the second event of hemostasis.

platelet plug formation