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
