Chapter 19 quiz Flashcards
Formed elements make up about what percentage of blood?
1. 20 %
2. 60%
3. 38%
4. 45%
5. 55%
- 45%
The combination of plasma and formed elements is called
1) packed blood
2) lymph
3) extracellular fluid
4) whole blood
5) serum
4) whole blood
Each of the following is a characteristic of whole blood, except a
1) ph of 7.4
2) deep red colour hemoglobin
3) built-in system for clotting
4) temperature of approximately 38 degrees celsius
5) viscosity about the same as water
5) viscosity about the same as water
The most abundant proteins in blood plasma are
1) albumins
2) transport proteins
3) fibrinogens
4) lpoproteins
5) globlins
1) albumins
The most abundant component of plasma is
1) proteins
2) nutrients
3) ions
4) water
5) gases
4) water
In adults, the only site of red blood cell production, and the primary site of white blood cell formation, is the
1) spleen
2) thymus
3) red bone marrow
4) yellow bone marrow
5) liver
3) red bone marrow
The most numerous type of WBCs in a differential count of a healthy individual are
1) monocytes
2) basophils
3) lymphocytes
4) neutrophils
5) leukocytes
4) neutrophils
Each heme ring in hemoglobin encloses an atom of
1) magenesium
2) iron
3) copper
4) sodium
5) calcium
2) iron
platelets are
1) red cells that lack a nucelus
2) cytoplasmic fragments of large cells
3) blue cells with a rpominent, concave nucleus
4) tiny cells with a polynucleus
2) cytoplasmic fragments of large cells
the developmental stage at which erythrocytes enter the circulation is as
1) band forms
2) reticulocytes
3) myeloid cells
4) hemocytoblasts
5) proeryhrocytes
2) reticulocytes
A triglyceride + globulin complex is termed a(n) _____.
1. lipoprotein
2. steroid-binding protein
3. apolipoprotein
4. metalloprotein
- lipoprotein
Which of the following statements is incorrect about how the components of hemoglobin are recycled?
1. Each heme is stripped of its iron and converted to biliveriden, then to bilirubin, then excreted in bile.
2. Iron ions circulate the blood, bound to transferrin (a plasma protein).
3. Hemoglobin can be recycled only if phagocytized by macrophages.
4. Approximately 2 million old (senescent) erythrocytes are recycled every second by specialized macrophages in the bone marrow, spleen and liver. (Macrophages in the liver are called Liver Kupffer cells).
5. the alpha and beta chain are released into the bloodstream for use by other cells
5, the alpha and beta chain are released into the bloodstream for use by other cells
Alpha and beta pepide chains are first broken down into amino acids, at which point they can be recycled. Amino acids are released into and transported by the blood stream and taken up and reused by other cells including developing red blood cells.
Red blood cells carry _____ to the lungs and ____ to the tissues.
1. carbond dioxide; oxygen
2. oxygen; nutrients
3. nutrients; carbon dioxide
4. oxygen; carbon dioxide
- carbond dioxide; oxygen
Which of the following statements is true about hemoglobin?
1. Each hemoglobin molecule can carry four oxygen molecules.
2. Each hemoglobin molecule is made up of one alpha and one beta chain of poypeptide.
3. All that is needed to bind oxygen is a molecule of heme.
4. Hemoglobin can only bind oxygen.
1, Each hemoglobin molecule can carry four oxygen molecules.
Mrs. Higgins needs to have major surgery. Two weeks before the surgery, her doctor prescribes EPO. Which of the following statements best explains his reason for doing this?
1. By prescribing EPO, the doctor will decrease her hematocrit so that her blood is less likely to clot during surgery.
2. By prescribing EPO, the doctor can stimulate Mrs. Higgins’s body to produce an overabundance of RBCs, which can be harvested and saved for her surgery.
3. After she takes EPO, Mrs. Higgins’s risk of infection will go down because of increased production of WBCs.
4. By prescribing EPO, the doctor will be able to increase oxygen levels because EPO causes hemoglobin to bind oxygen more efficiently.
- By prescribing EPO, the doctor can stimulate Mrs. Higgins’s body to produce an overabundance of RBCs, which can be harvested and saved for her surgery.
A person with a type A positive blood can safely receive blood from all of these donors EXCEPT _____.
1. O positive
2. B positive
3. A positive
4. A negative
5. O negative
2, B positive
The agranular leukocyte that can differentiate into a cell that is capable of phagocytosis is the ____.
1. lymphocyte
2. mast cell
3. eosinophil
4. neurophil
5. monocytes
5, monocytes
Which of these statements about basophils is FALSE?
1. they are a type of leukocyte
2. they release histamine
3. they are abundant
4. they contain cytoplasmic granules
5. they promote inflammation
3, they are abundant
All of the following characteristics describe neutrophils EXCEPT that ____.
1. they are the most abundant WBC
2. they contain granules that contain bactericidal components
3. they are phagocytic
4. they contain a segmented nucleus with two to five lobes
5. they release histamine
5, they release histamine
Megakaryocytes are the source of _____.
1. monocytes
2. lymphocytes
3. RBCs
4. platelets
5. myeloblasts
4, platelets
A blood smear prepared after a venipuncture shows a preponderance of very grainy white blood cells. Which of the following formed elements is not part of this “grainy” group?
*select correct answer(s).
1. monocytes
2. macrophages
3. basophils
4. mast cells
5. eosinophils
6. lymphocytes
7. meutrophils
1, monocytes; 2, macrophages; 6, lymphocytes
Plasma makes up approximately what percentage of whole blood?
- 38%
- 100%
- 65%
- 45%
- 55%
5, 55%
The following statements about blood are true EXCEPT that __________.
1. it contains dissolved gases
2. the pH is slightly acidic
3. it contains red blood cells, white blood cells, and platelets
4. it is considered a fluid connective tissue
5. the viscosity is five times greater than water
2, the pH is slightly acidic
The formed elements of blood consist of __________.
*Select correct answer(s).
- plasma proteins
- WBCs
- RBCs
- platelets
- electrolytes
2, WBCs; 3, RBCs; 4, platelets
