PNB 2275 LAB PRACTICAL I UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS

PNB 2275 LAB PRACTICAL I UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS

Question:
1. Blood is a type of __ tissue that is able to regenerate itself on a regular basis
Answer:
connective

Question:
2. If you spin a blood sample in a centrifuge on top is __, which makes up about __% of blood.
Answer:
Plasma; 55%

Question:
3. It is mainly consisting of water and also proteins and other dissolved solutes, such as urea, salts, and
organic nutrients.
Answer:
plasma

Question:
4. If you spin a blood sample in a centrifuge, the middle layer is a grey-white layer, called a __.
Answer:
buffy coat

Question:
5. This layer contains platelets and various WBCs (leukocytes)
Answer:
buffy coat

Question:
6. If you spin a blood sample in a centrifuge, the bottom layer consists of __ and is about __% of the blood.
Answer:
red blood cells (erythrocytes); 44%

Question:
7. Collectively, the __ & __ are called the "formed elements".
Answer:
erythrocytes & the buffy coat

Question:
8. help initiate immune responses and defend the body against pathogens
Answer:
WBCs

,Question:
9. How much bigger or smaller are WBCs compared to RBCs?
Answer:
They are about 1.5-3x larger than RBCs.

Question:
10. WBCs are/are not motile
Answer:
ARE motile

Question:
11. WBCs are mostly found in the __ rather than the __
Answer:
body tissues rather than the blood stream

Question:
12. What are the 5 different types of WBCs
Answer:
Neutrophils, Lymphocytes, Monocytes, Eosinophils, Basophils (Never Let Monkeys Eat Bananas)

Question:
13. How do you view all of the components of blood?
Answer:
by preparing a blood smear slide

Question:
14. What are the two major classes of leukocytes?
Answer:
granulocytes & agranulocytes

Question:
15. Which leukocytes are granulocytes?
Answer:
the phils! -> neutrophils, eosinophils, basophils

Question:
16. Which leukocytes are agranulocytes?
Answer:
A Little Monkey -> lymphocytes & monocytes

Question:
17. When viewed under the microscope, granulocytes have visible microscopic __ in the cytoplasm.
Answer:
granules

,Question:
18. __ are the most abundant WBC type and their nuclei are __.
Answer:
Neutrophils; multi-lobed

Question:
19. have red-pink granules in their cytoplasm and their nuclei are __.
Answer:
Eosinophils; bi-lobed nuclei with two lobes connected by a strand

Question:
20. These make up about 2-4% of leukocytes, second most common.
Answer:
Eosinophils

Question:
21. Eosinophilia (an increase in the number of eosinophils in the blood) is likely to come from a patient
with __.
Answer:
an allergic reaction or a parasitic infection

Question:
22. __ are the least numerous type of leukocyte. They also have __ nuclei & blue-violet __
Answer:
Basophils; bi-lobed nuclei; granules

Question:
23. Agranulocytes do/do not have granules in their cytoplasm/
Answer:
Technically they still have granules in their cytoplasm, but they are much smaller so they are often
over-looked.

Question:
24. __ have large, round nuclei
Answer:
Lymphocytes

Question:
25. __ have kidney-shaped nuclei
Answer:
Monocytes

Question:
26. This disease is inherited and is caused by a single point mutation in the gene for the Hb beta chain.
Answer:
Sickle cell anemia

, Question:
27. Sickle cell anemia is inherited and is caused by a single __ mutation in the gene for the Hb __ chain,
causing the cells to adopt a sickle shape and not be able to carry as much oxygen.
Answer:
caused by a single POINT mutation in the gene for the Hb BETA chain

Question:
28. What is the point mutation that causes sickle cell anemia?
Answer:
GAG -> GUG, which is a valine amino acid, rather than a glutamic acid

Question:
29. a higher density of RBCs is characteristic of __
Answer:
polycythemia

Question:
30. The elevated proportion of RBCs in polycythemia is result of either __ or __
Answer:
the result of either an increase in the number of RBCs or a decrease in blood plasma volume

Question:
31. Polycythemia can be a dangerous condition when the blood becomes too __ and can result in __ & __.
Answer:
viscous; high blood pressure & clots

Question:
32. Primary polycythemia is a rare caused by __.
Answer:
factors intrinsic to RBC precursors found in bone marrow (Hormones like erythropoietin can increase
production of erythrocytes. Chronic hypoxia and steroid hormones such as testosterone can also contribute
to polycythemia.)

Question:
33. Blood doping is an example of transfusional __
Answer:
polycythemia

Question:
34. This is a widespread viral disease characterized by fever, sore throat, and fatigue.
Answer:
Infectious mononucleosis

Question:
35. Infectious mononucleosis is most commonly caused by the __ virus