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Lecture Exam 1 Blood
| Question | Answer |
|---|---|
| What are the 5 functions of blood? | 1.) Delivers oxygen from lungs to tissues 2,) Regulates body temp 3.) Acid-base regulation 4.) Protects against loss of blood 5.) Carries hormones, nutrients, oxygen, and O2 |
| What is the main function of blood? | to transport |
| What is the normal temperature of blood? | 38 degrees celcius ( 100 degrees F) |
| What is the normal volume of blood? | 5 liters |
| What is the normal pH of blood? | 7.35-7.45 |
| What is the definition of plasma? | The Extracellular matrix of whole blood |
| What is the difference between buffy coat and hematocrit? | The buffy coat is WBC's and platelets, The hematocrit is RBC's |
| What is the most common element in plasma? | Water |
| What are the 3 proteins of plasma? | Albumin, Globulin, and Fibrinogen |
| what is the most common protein of plasma? | Albumin |
| What does Albumin do? | Transporters of fatty acids, thyroid hormones, and some steroid hormones Regulates fluid volume |
| What does Globulin do? | Makes antibodies for defense |
| What does Fibrinogen do? | helps with clotting |
| What is the hematocrit? | RBC's |
| What is the lifespan of an erythrocyte? | 120 days |
| Can erythrocytes perform mitosis or meiosis? why or why not? | No, because they don't have a nucleus or DNA |
| Why is blood red? | Hemoglobin |
| Describe the shape of an erythrocyte | Biconcave, Disc-shape |
| What is the purpose of the erythrocytes shape? | For a larger surface area to carry more oxygen |
| What is Hemoglobin? | The red pigment in blood |
| What is Oxyhemoglobin? | Blood carrying oxygen that is bound to iron (Fe-), bright red |
| How many oxygen molecules can one hemoglobin carry? | 4 |
| What is Rouleaux? | Stacked RBC's |
| What is Erythropoiesis? | The making of new RBC's |
| Where does erythropoiesis occur? | In the bone |
| The kidneys release __________ when signaled | Erythropoietin |
| What is deoxyhemoglobin? | Blood that lacks oxygen, dark red |
| What is Carbaminohemoglobin? | Blood carrying CO2 back to lungs |
| How many heme groups does one hemoglobin have? | 4 |
| Why is Rouleaux necessary? | Easier to pass through capillaries together for max exposure |
| _______ is an essential hormone of RBC's released by the _______ in response to low ___ and _____ availability. | Erythropoietin, Kidneys, O2, Iron |
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