Deck 12: Blood

Question 1

Which biochemical component of the erythrocyte cell surface is primarily responsible for determining blood type (eg, the A-B-O system).

A) Fatty acid
B) Carbohydrate
C) Nucleic acid
D) Protein
E) Cholesterol

Answer 1

Carbohydrate

Question 2

What cell in circulating blood is the precursor to microglia and most antigen-presenting cells?

A) Eosinophil
B) Basophil
C) Lymphocyte
D) Monocyte
E) Mast cell

Answer 2

Monocyte

Question 3

What is the approximate life span of a circulating erythrocyte?

A) 8 days
B) 20 days
C) 5 weeks
D) 4 months
E) 1 year

Answer 3

4 months

Question 4

Which cell type has cytoplasmic granules that contain heparin and histamine?

A) Eosinophils
B) Basophils
C) Lymphocytes
D) Monocytes
E) Neutrophils

Question 5

A differential cell count of a blood smear from a patient with a parasitic infection is likely to reveal an increase in the circulating numbers of which cell type?

A) Neutrophils
B) Lymphocytes
C) Monocytes
D) Basophils
E) Eosinophils

Question 6

Which of the following blood cells differentiate outside of the bone marrow?

A) Neutrophils
B) Basophils
C) Eosinophils
D) T lymphocytes
E) Megakaryocytes

Question 7

Examination of a normal peripheral blood smear reveals a cell more than twice the diameter of an erythrocyte with a kidneyshaped nucleus. There cells are less than $10 \%$ of the total leukocytes. Which of the following cell types is being described?

A) Monocyte
B) Basophil
C) Eosinophil
D) Neutrophil
E) Lymphocyte

Question 8

A 43-year-old anatomy professor is working in her garden, pruning rose bushes without gloves, when a thorn deeply penetrates her forefinger. The next day the area has become infected. She removes the tip of the thorn, but there is still pus remaining at the wound site. Which of the following cells function in the formation of pus?

A) Cells with spherical nuclei and scant cytoplasm
B) Biconcave cells with no nuclei
C) Cells with bilobed nuclei and many acidophilic cytoplasmic granules
D) Very small, cell-like elements with no nuclei but many granules
E) Cells with polymorphic, multiply lobed nuclei

Question 9

A 35-year-old woman's physician orders laboratory blood tests. Her fresh blood is drawn and centrifuged in the presence of heparin as an anticoagulant to obtain a hematocrit. From top to bottom, the fractions resulting from centrifugation are which of the following?

A) Serum, packed erythrocytes, and leukocytes
B) Leukocytes, erythrocytes, and serum proteins
C) Plasma, buffy coat, and packed erythrocytes
D) Fibrinogen, platelets, buffy coat, and erythrocytes
E) Albumin, plasma lipoproteins, and erythrocytes

Question 10

A hematologist diagnoses a 34-year-old woman with idiopathic thrombocytic purpura (ITP). Which of the following symptoms/ characteristics would one expect in this patient?

A) Normal blood count
B) Hypercoagulation
C) Decreased clotting time
D) Abnormal bruising
E) Light menstrual periods