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Ch 18 flashcards
Chapter 18, page 3
Question | Answer |
---|---|
Another name for ERYTHROCYTES | Red Blood Cells (RBC) |
What does hemoglobin transport? | Oxygen |
What makes up 99% of formed elements? | Erythrocytes and hemoglobin |
What is the shape of erythrocytes? | Biconcave disc |
The hemoglobin molecule within the red blood cell carries oxygen from the lungs to the tissues. What does hemoglobin transport from the tissues back to the lungs? | Carbon dioxide |
Why do erythrocytes not have the biconcave shape? | They have no nucleus or organelles. |
What is the average life span of erythrocytes? | Approximately 120 days |
What is a benefit of producing energy through anaerobic respiration for the erythrocytes? | They do not need to use the oxygen they carry to make their own ATP. |
One hemoglobin has how many hemes? | 4 hemes |
One hemoglobin can carry how many oxygen molecules? | 4 |
What is the protein component of hemoglobin? | Globin |
What are the two components of hemoglobin? | Globin and heme |
What is carbaminohemoglobin? | When carbon dioxide is is bound to globin. |
Oxyhemoglobin | Hemoglobin is bound to oxygen |
Deoxyhemoglobin | Hemoglobin is not bound to oxygen |
How are oxyhemoglobin and deoxyhemoglobin related? | They are both related to the oxygen carrying status of iron ion. |
What provided hemoglobin with its non-protein pigment? | Heme |
How many erythrocytes does a healthy male have? | 4.6 - 6.2 million/mm3 |
How many erythrocytes does a healthy female have? | 4.2 - 5.4 million/mm3 |
What causes vasodilation? | Nitric oxide causes the arteries to widen. |
What has the ability to regulate blood flow and blood pressure? | Nitric oxide |
What produces nitric oxide? | Endothelial cells |