SCIENCE 132Week 3 Quiz 15.0/ 15.0 Points

Week 3 Quiz Return to Assessment List Comment:Joshua, Your short answer and lab report questions for week 3 have been graded. Scott Nunnelly Part 1 of 7 - 15.0/ 15.0 Points Question 1 of 32 3.0/ 3.0 Points Which of the following is the primary function of red blood cells?  A. To bind and carry away waste products from most cells of the body.  B. To bind some ions and molecules in the blood which are not water-soluble.  C. To help fight off infection as part of the immune system.  D. To help in the process of hemostasis, the stoppage of blood flow following damage to a blood vessel.  E. To carry oxygen from the lungs to all cells of the body; to carry some carbon dioxide from the cells back to the lungs.Feedback:Good work; your answer is correct! Question 2 of 32 3.0/ 3.0 Points What is the most common leukocyte in the human body?  A. neutrophils  B. natural killer (NK) cells  C. lymphocytes  D. basophils  E. eosinophils Feedback:Good work; your answer is correct! Question 3 of 32 3.0/ 3.0 Points Lymphocytes can be classified in the following group or groups: A. monocytes  B. B-cells  C. T-cells  D. natural killer (NK) cells  E. Answers B, C, and D are correct Feedback:Good work; your answer is correct! Question 4 of 32 3.0/ 3.0 Points What is the typical lifespan of a leukocyte?  A. The lifespan of a leukocyte typically is measured only in hours or days.  B. The lifespan of a leukocyte is extremely variable, measuring in hours to years or decades. C. The lifespan of a leukocyte is approximately 120-150 days.  D. Many leukocytes can live indefinitely if they are in well-protected locations.  E. Because all leukocytes are unable to undergo mitosis (cell division), their lifespan is usually only a few seconds. Feedback:Good work; your answer is correct! Question 5 of 32 3.0/ 3.0 Points Which of the following is/are important in the process named coagulation?  A. Coagulation is a complicated cascade of reactions that result in the formation of a mesh of fibrin.  B. Coagulation is a very simple and straight-forward series of only two or three steps.  C. Coagulation can only occur in the presence of two or three different “clotting factors.” D. Neither an excess number of platelets nor having many too few platelets in the blood stream will cause any serious reaction.  E. A process which can reverse coagulation, named anticoagulation, can only occur when one or more medications are administered to the body. Feedback:Good work; your answer is correct! Part 2 of 7 - 9.0/ 15.0 Points Question 6 of 32 0.0/ 3.0 Points The arteries that supply blood to the myocardium of the heart are called:  A. penetrating arteries  B. valvular arteries  C. pericardial arteries  D. coronary arteries E. myocardial arteries Feedback:The right coronary artery and left coronary artery together supply blood to all the cells of the myocardium. Question 7 of 32 3.0/ 3.0 Points Which of the following statements is/are correct when describing heart sounds?  A. In a normal, healthy heart, there are only two audible heart sounds: S1 and S2.  B. The normal heart sounds do not have anything to do with the opening or closing of a heart valve.  C. A heart murmur is always considered to be a normal heart sound.  D. Normally you will hear at least three or four heart sounds.  E. Very few individuals are able to hear any heart sounds.Feedback:Good work; your answer is correct! Question 8 of 32 3.0/ 3.0 Points Which of the following statements about valves in the heart is/are true?  A. A valve enables blood to only flow in one direction.  B. A valve keeps blood from flowing in a reverse direction.  C. All of the valves open when the blood pressure on one side of the valve is higher than on the other side of the valve.  D. Statements A and B are correct. Statement C is incorrect.  E. Statements A, B, and C are correct. Feedback:Good work; your answer is correct! Question 9 of 32 0.0/ 3.0 Points The period of time that begins with contraction of the atria and ends with ventricular relaxation is known as: A. an ECG.  B. systole.  C. the P-wave.  D. diastole.  E. the cardiac cycle. Feedback:From your readings, you learned that the period of time that begins with contraction of the atria and ends with ventricular relaxation is known as the cardiac cycle. Question 10 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. B. A heart rate less than or equal to 60 beats/minute is called bradycardia.  C. A heart rate greater than or equal to 100 or 120 beats/minute is called tachycardia.  D. A person’s heart rate will change depending on the needs of the body.  E. B, C, and D are all correct. Feedback:Good work; your answer is correct! Part 3 of 7 - 12.0/ 18.0 Points Question 11 of 32 3.0/ 3.0 Points Systolic pressure minus diastolic pressure is another term for:  A. peripheral resistance  B. Cardiac output  C. Pulse pressure D. Stroke volume  E. Mean arterial pressure (MAP) Feedback:Good work; your answer is correct! Question 12 of 32 3.0/ 3.0 Points The following is a list of vessels. Place them in the order that blood would go through entering the systemic circulation. 1. Left ventricle 2. Aorta 3. Vena cavae 4. Pulmonary trunk 5. Pulmonary veins 6. Right atrium 7. Right ventricle 8. Left atrium  A. 6, 7, 3, 5, 2, 1, 4, 8  B. 3, 6, 7, 4, 5, 8, 1, 2  C. 8,1,3, 6, 7, 5, 2, 4,  D. 3, 5, 8, 4, 1, 2, 7, 6 E. 1, 7, 3, 8, 5, 6, 2, 4 Feedback:Good work; your answer is correct! Question 13 of 32 0.0/ 3.0 Points What is the sequence of layers of the blood vessels (veins or arteries) from outside to the inside?  A. Tunica externa, tunica media, tunica intima  B. Tunica intima, tunica media, tunica externa  C. Tunica externa, tunica intima, tunica media  D. Tunica intima, tunica media, tunica externa  E. Tunica media, tunica externa, tunica intima Feedback:The layers of both arteries and veins is Tunica Externa, tunica media, tunica intimaQuestion 14 of 32 3.0/ 3.0 Points __________ is a condition where the heart is beating over 100 beats per minute.  A. Tachycardia  B. Bradycardia  C. Arrhythmia  D. Nodal Block  E. Irregular Heart Beat (IHR) Feedback:Good work; your answer is correct! Question 15 of 32 0.0/ 3.0 Points Which tunic of an artery is responsible for maintaining blood pressure?  A. Tunic intima B. Tunica media  C. Tunica externa  D. Tunica interna  E. None of the above. Feedback:Tunica media is the layer with the smooth muscle that helps control blood pressure. Question 16 of 32 3.0/ 3.0 Points The pulmonary arteries carry blood to the______.  A. Lungs  B. Aorta C. Systemic system  D. Ventricles  E. Heart Feedback:Good work; your answer is correct! Part 4 of 7 - 9.0/ 18.0 Points Question 17 of 32 3.0/ 3.0 Points Cancer cells and virus cells can be killed by  A. Eosinophils  B. Phagocytes  C. Antibodies  D. Natural Killer Cells E. T lymphocytes Feedback:Good work; your answer is correct! Question 18 of 32 0.0/ 3.0 Points The majority of the lymph returns to the blood system by way of the __________.  A. Cisterna chili  B. Thoracic duct  C. Both the superior and inferior vena cava  D. Right lymphatic duct  E. Aorta Feedback:The thoracic duct returns over ¾ of the lymph from the body.Question 19 of 32 3.0/ 3.0 Points Antibodies:  A. Require haptens to function  B. Make up part of the primary immune system  C. Are made from T cells  D. Are made from plasma cells  E. None of the above Feedback:Good work; your answer is correct! Question 20 of 32 0.0/ 3.0 Points The inflammatory response does not:  A. Replaces damaged tissue with healthy tissue B. Prevents the spread of disease to surrounding tissues  C. Starts the repair process of the tissue  D. Disposes of the cellular debris  E. The inflammatory response does all of the above. Feedback:a. The inflammatory response does not replace damaged tissue. Question 21 of 32 3.0/ 3.0 Points The body’s nonspecific defense includes everything except:  A. Antibodies  B. Inflammation C. Interferons  D. Compliment system  E. All of the above are nonspecific defenses. Feedback:Good work; your answer is correct! Question 22 of 32 0.0/ 3.0 Points Part of the second line of defense includes:  A. Platlets  B. Cilia  C. Antibodies  D. Phagocytes E. Sebum on the skin Feedback:Phagocytes are part of the second line of defense. Part 5 of 7 - 15.0/ 21.0 Points Question 23 of 32 3.0/ 3.0 Points The repolarization of cardiac muscle is due to _______.  A. potassium exiting the cell  B. sodium entering the cell  C. potassium entering the cell  D. sodium exiting the cell Feedback:Correct! Question 24 of 32 3.0/ 3.0 Points When multiple stimuli were applied at 20 stimuli/sec in the simulation, _______. A. triplets representing three ventricular contractions occurred  B. extrasystoles were produced  C. atrial contractions completely disappeared  D. fused tetanus occurred Feedback:Correct! Question 25 of 32 0.0/ 3.0 Points The effect of the sympathetic nervous system on the heart is to _______.  A. decrease the heart rate  B. increase the heart rate C. increase the heart rate and increase the force of contraction  D. decrease the heart rate and decrease the force of contraction Feedback:Learning Objective: Describe the effects of the sympathetic and parasympathetic divisions of the autonomic nervous system on heart rate. Please review Lab Exercise 6, Activity 2. Question 26 of 32 0.0/ 3.0 Points Which of the following types of muscle are capable of autorhythmicity?  A. Smooth  B. Cardiac  C. Cardiac and smooth  D. Skeletal  E. Cardiac and skeletalFeedback:Learning Objective: Define autorhythmicity. Please review Lab Exercise 6, Overview. Question 27 of 32 3.0/ 3.0 Points Which of the following will cause a decrease in heart rate?  A. parasympathetic nervous system stimulation  B. sympathetic nervous system stimulation  C. somatic nervous system stimulation  D. none of these will slow heart rate Feedback:Correct! Question 28 of 32 3.0/ 3.0 Points The total refractory period of cardiac muscle _______.  A. is shorter than the total refractory period for skeletal muscle B. is about the same as the total refractory period for skeletal muscle  C. is longer than the contraction of cardiac muscle  D. is longer than the total refractory period for skeletal muscle Feedback:Correct! Question 29 of 32 3.0/ 3.0 Points What happens during Phase 2 of cardiac muscle depolarization?  A. Rapid upswing in membrane potential; sodium ions enter cardiac cell.  B. Period of resting potential until the next depolarization.  C. "The plateau phase"; when the membrane remains in a depolarized state; potassium channels stay closed and calcium channels stay open. D. Membrane potential falls slightly and then rebounds as potassium flow out of the cell decreases and calcium flows into the cell. Feedback:Correct! Part 6 of 7 - 4.0/ 8.0 Points Answer the following question in your own words without using any resources. Your answer should be written in complete sentences using correct grammar, spelling, and terminology. Question 30 of 32 4.0/ 4.0 Points Briefly explain how the sympathetic and parasympathetic nervous systems work together to regulate heart rate. With a normal healthy heart rate needing to be 60bpm, the SNS keeps the heart rate elevated when it needs to be for additional oxygenated blood in the body, while the parasympathetic nervous system lowers the heart rate during period of rest, and keeps it at an average of 60....the SNS alone would keep the HR at around 100bpm Feedback:Learning Objective: Describe the effects of the sympathetic and parasympathetic divisions of the autonomic nervous system on heart rate. Please review Lab Exercise 6, Activity 2. Question 31 of 32 0.0/ 4.0 Points Briefly explain why wave summation and tetany would be deadly in cardiac muscle. the twitches might overlap creating stronger contractions in the heart Feedback:Learning Objective: Explain why the absence of wave summation and tetanus is important to cardiac muscle function. Please review Lab Exercise 6, Activity 1. Comment:The heart would remain fully contracted and not be able to refill with blood; therefore, becoming ineffective as a pump. Part 7 of 7 - 5.0/ 5.0 Points Instructions: 1. Click on the Browse button to find the lab report on your computer. 2. Click on the Upload button to attach your lab report to the quiz. Question 32 of 32 5.0/ 5.0 Points Attach your completed Lab Exercise 6, Activity 1: Investigating the Refractory Period of Cardiac Muscle lab report (PEX-06-01_FirstnameL) as the answer to this question.PEX-06-01_Joshua Hall(114.76 KB) Comment:Thank you