SCIN 132 Week 3 Quiz - Questions, Answers and Feedback

SCIN 132 Week 3 Quiz Question 1 of 32 3.0/ 3.0 Points The pH of a liquid is a measure of its acidity or alkalinity. The normal range of pH of blood is:  A. 2.0 to 3.0  B. 3.55 to 4.55  C. 4.35 to 4.45  D. 5.0 to 6.0  E. 7.45 to 7.55 Feedback: Good work; your answer is correct! Question 2 of 32 3.0/ 3.0 Points Which of the following is/are correct in describing thrombosis:  A. A condition characterized by excessive numbers of platelets that increases the risk for excessive clot formation, a condition known as thrombosis.  B. Thrombosis is a very common, always harmless condition that occurs in the body.  C. A thrombosis is always harmless because the thrombus which is formed always stays in a blood vessel precisely where it formed.  D. The blood stream contains several different anticoagulants that will result in the complete, normal breakdown of a thrombus.  E. Two of the above are correct. Feedback: Good work; your answer is correct! Question 3 of 32 3.0/ 3.0 Points What is meant by the term anemia?  A. There are only approximately four or five causes of anemia.  B. Anemia exists when the platelet count is so low that blood does not clot as quickly as it should.  C. Anemia is defined as a deficiency in the number of red blood cells and/or hemoglobin.  D. Anemia is said to exist when the total white blood cell is too low.  E. Anemia always results from some very simple cause. Feedback: Good work; your answer is correct! Question 4 of 32 3.0/ 3.0 Points Which of the following is/are important in the process named coagulation?  A. Neither an excess number of platelets nor having many too few platelets in the blood stream will cause any serious reaction.  B. Coagulation is a very simple and straight-forward series of only two or three steps.  C. A process which can reverse coagulation, named anticoagulation, can only occur when one or more medications are administered to the body.  D. Coagulation is a complicated cascade of reactions that result in the formation of a mesh of fibrin.  E. Coagulation can only occur in the presence of two or three different “clotting factors.” Feedback: Good work; your answer is correct! Question 5 of 32 0.0/ 3.0 Points In case an American needs an emergency blood transfusion, blood with the following blood type(s) can be given without fear of agglutination?  A. O+  B. AB+  C. AB-  D. Blood with the same blood type as the person needing the transfusion.  E. Either C or D can be given. Feedback: A person who needs a blood transfusion should be given blood with the same ABO and Rh blood type if possible. Blood with the blood type O- can also be given because there are no antigens on the surface its erythrocytes. Part 2 of 7 - 12.0/ 15.0 Points Question 6 of 32 3.0/ 3.0 Points The specific fibers which spread the electrical impulse to the cardiac muscle fibers are called:  A. vagus nerve fibers  B. depolarizing sites  C. AV fibers  D. Purkinje fibers  E. bundle branches Feedback: Good work; your answer is correct! Question 7 of 32 3.0/ 3.0 Points Which of the following statements are considered to be normal?  A. Normal heart rates vary from 30 beats/minute up to 200 beats/minute.