The life cycle of erythrocytes involves three stages;
production, maturity and destruction
. Production of erythrocytes (erythropoiesis) is one of the sub-processes of hematopoiesis, happening in the red bone marrow.
Which of the following statements about the erythrocyte life cycle is correct?
Answer and Explanation: The correct answer is (3)
Erythrocytes lack a nucleus
. Erythrocytes are red blood cells (RBCs). Mature and circulating RBCs do NOT have a nucleus.
What is true for erythrocytes?
A type of blood cell that is made in the bone marrow and found in the blood. Erythrocytes
contain a protein called hemoglobin, which carries oxygen from the lungs to all parts of the body
. Checking the number of erythrocytes in the blood is usually part of a complete blood cell (CBC) test.
What are the four stages of erythropoiesis?
The stages for the erythrocyte are
rubriblast, prorubriblast, rubricyte and metarubricye
. Finally the stages can also be named according to the development of the normoblast stage. This gives the stages pronormoblast, early normoblast, intermediate normoblast, late normoblast, polychromatic cell.
What are the three phases of erythropoiesis?
2, 4 The three classes of erythropoietic progenitors defined have been termed CFU-E
5
(colony-forming units-erythroid, progenitors of single or paired clusters seen after 2 days), day 3 BFU-E
2
(burst-forming units-erythroid, progenitors of early bursts containing four or more clusters and seen after 3-4 days), and day 8 …
What happens to erythrocytes at the end of their life cycle?
When matured, these cells circulate in the blood for about 100 to 120 days, performing their normal function of molecule transport. At the end of their lifespan,
they degrade and are removed from circulation
.
Which of the following does not stimulate erythrocyte production quizlet?
Which of the following does NOT stimulate erythrocyte production?
Hyperventilating leads to an above-normal level of oxygen in the blood
, which would not stimulate RBC production.
Which of the following statement is not true about blood?
–
Blood plasma is yellow in colour
. – All the corpuscles (cells like WBCs, RBCs, platelets) are suspended in the plasma. – It can coagulate as we see blot clots on wounds or internal clots. So, the given statement is incorrect.
Which of the following statements best describes the relationship between the form of a erythrocyte and its function?
Which of the following statements best describes the relationship between the form of a erythrocyte and its function?
The nucleus- and organelle-lacking, biconcave disc shape creates a greater surface area, which is beneficial for gas exchange
. Which of the following is NOT a reason for a erythrocyte’s short life span?
What are erythrocytes quizlet?
Erythrocyte.
A red blood cell
. It is produced and becomes mature in the bone marrow.
What is erythrocyte and leukocyte?
Red blood cells are called Erythrocytes. White Blood Cells are called Leucocytes or Leukocytes
. RBCs have a bi-concave disc shape. WBCs have an irregular shape. Size varies from 6 – 8 μm in diameter.
What happens during Erythrocytosis?
Erythrocytosis is
when you have more red blood cells than normal
. Red blood cells are also called erythrocytes. Red blood cells carry oxygen throughout your body and remove carbon dioxide from your body. Your bone marrow (the tissue inside your bones) makes red blood cells and releases them into your bloodstream.
What are the types of erythropoiesis?
a common myeloid progenitor or a multipotent stem cell, and then. a unipotent stem cell, then. a pronormoblast, also commonly called an proerythroblast or a rubriblast. This becomes a
basophilic or early normoblast
, also commonly called an erythroblast, then.
Which of the following characteristics is not associated with erythrocytes quizlet?
Which of the following characteristics is not associated with erythrocytes? Mature erythrocytes
do not have a nucleus and organelles
and so are not capable of carrying out protein synthesis.
What are the factors of erythropoiesis?
| Sr. Number Growth factor Functions | 1 Erythropoietin Differentiation and proliferation of erythroid | 2 Granulocyte macrophage colony-stimulating factor White blood cell growth factor | 3 Interleukin-3 Differentiation and proliferation of myeloid progenitor cells | 4 Interleukin-6 Differentiation |
|---|
Where erythrocytes are destroyed?
Hemolytic anemia may involve either intravascular hemolysis, in which red blood cells are destroyed
within the circulation
, or extravascular hemolysis, in which the cells are destroyed in the liver or spleen.
What are the major functions of erythrocytes and what vital pigment do erythrocytes contain?
The main job of red blood cells, or erythrocytes, is to
carry oxygen from the lungs to the body tissues and carbon dioxide as a waste product, away from the tissues and back to the lungs
. Hemoglobin (Hgb) is an important protein in the red blood cells that carries oxygen from the lungs to all parts of our body.
What happens to erythrocytes after 120 days?
After about 100-120 days,
RBCs are removed from circulation through a process called eryptosis
. Erythropoiesis is the process by which human erythrocytes are produced. It is triggered by erythropoietin, a kidney hormone produced during hypoxia.
Which of the following is not a formed element?
The answer is C.
Antibodies
are not one of the formed elements of blood.
Do mature erythrocytes do not contain mitochondria or a nucleus?
The mature erythrocyte (red blood cell)
contains no nucleus, mitochondria, Golgi apparatus, or endoplasmic reticulum
. Consequently, the red blood cell can only derive energy from glycolysis, the anaerobic breakdown of glucose in the cytosol. Mitochondria would be required for any other metabolic process.
Which of the following is not a normal characteristic of blood?
The answer is b.
Blood is not normally maintained at a pH of 7.0
. The pH of blood is tightly controlled between 7.35 and 7.45 (slightly alkaline). Option a is correct because blood tastes metallic due to its high iron content and salty because of dissolved electrolytes in the plasma.
Which is not true about hemoglobin?
Option b is the correct answer. Haemoglobin has higher affinity with oxygen and carbon monoxide but
not with carbon dioxide
.
Which of the following is not a granulocyte?
A lymphocyte
is not a granulocyte. Granulocytes are a category of white blood cells characterized by the presence of granules in their cytoplasm. There are three principal types of granulocytes- basophil granulocytes, eosinophil granulocytes and neutrophil granulocytes. Lymphocytes and monocytes are the agranulocytes.
Which of the following is not a function of the lymphatic tissue?
The correct answer: The specific option which is not a function of the lymphatic system is B)
transporting respiratory gases
.
