Multiple Choice
In the context of blood tissue structure, platelets (thrombocytes) are formed by fragmentation of which cell type?
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1. Overview of Cell Biology
Overview of Tissue Structures
Multiple Choice
In the context of tissue structure and function, what is the primary function of a red blood cell (erythrocyte)?
A
Transport oxygen (and some carbon dioxide) between the lungs and body tissues via hemoglobin
B
Engulf and digest pathogens through phagocytosis as part of the innate immune response
C
Secrete antibodies to provide long-term adaptive immunity
D
Initiate blood clotting by adhering to damaged endothelium and forming a platelet plug
Verified step by step guidance1
Step 1: Understand the role of red blood cells (erythrocytes) in the body. Red blood cells are specialized cells primarily involved in transporting gases.
Step 2: Recall that red blood cells contain hemoglobin, a protein that binds oxygen molecules in the lungs and releases them in body tissues where oxygen is needed.
Step 3: Recognize that red blood cells also carry some carbon dioxide, a waste product of cellular respiration, from the tissues back to the lungs for exhalation.
Step 4: Differentiate red blood cells from other blood components: white blood cells are responsible for immune responses such as phagocytosis and antibody secretion, while platelets are involved in blood clotting.
Step 5: Conclude that the primary function of red blood cells is the transport of oxygen (and some carbon dioxide) between the lungs and body tissues via hemoglobin.
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