The "buffy coat" in a centrifuged blood sample is composed of
A. erythrocytes and leukocytes.
B. platelets.
C. leukocytes.
D. platelets and leukocytes.
E. erythrocytes.
Answer: D
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Major calyces are
A) large branches of the renal pelvis. B) expanded ends of nephrons. C) basic functional layers of the kidney. D) conical structures that are located in the renal medulla. E) the expanded ends of renal pyramids.
Which muscle is correctly matched to its origin and insertion?
A) pectineus; originates on the crest of the ilium and inserts into the fascia lata B) sartorius; originates on the ischium and pubic symphysis and inserts on the medial surface of the tibia C) gracilis; originates on the ischial tuberosity and inserts on the tibia D) gluteus medius; originates on the ilium and the transverse processes of the last sacral and first caudal vertebrae and inserts on the femur
What wave on the electrocardiogram (ECG) occurs during the ventricular ejection phase of the cardiac cycle?
A) P wave B) T wave C) Q wave D) R wave
The first of a series of neutrophil behaviors in inflammation is ________.
A. opsonization B. phagocytosis C. chemotaxis D. margination E. diapedesis