ZOOL 3204 Fall 2012 Exam 4 Form 001 PLEASE DO NOT START UNTIL TOLD TO DO SO Once you are told to start please do the following 1 On the scan tron please write your name and student ID CWID in the appropriate sections After your student ID LEAVE A BLANK SPACE and then fill in your lab section number as follows 01 Tuesdays 8 30 02 Tuesdays 10 30 03 Tuesdays 12 30 04 Tuesdays 2 30 05 Tuesdays 6 30 06 Wednesdays 8 30 07 Wednesdays 12 30 08 Wednesdays 2 30 09 Wednesdays 6 30 10 Thursdays 8 30 11 Thursdays 10 30 12 Fridays 8 30 Be sure to fill in all of the corresponding circles This will allow the TA s to return your scores in lab Grades also will be posted on D2L 2 On the scan tron write 3204 for Course Number and for Sec write the Form of this exam 001 3 There are a total of 45 regular questions on this exam and each question is worth 2 points unless noted otherwise 100 points total There are also four extra credit questions each worth 2 points 4 If you have a question please raise your hand and we will come to you 5 When finished please turn in the scan tron TO YOUR LAB TA You can keep this exam copy 6 Good Luck These instructions are given for good reason failure to follow them could result in up to a 10 point reduction in your grade By taking this exam you consent to OSU s Commitment to Academic Integrity I will respect OSU s commitment to academic integrity and uphold the values of honesty and responsibility that preserve our academic community Page 1 of 8 1 4 pts Regarding the diagram above 1 2 3 4 5 A increases heart rate but not stroke volume B increases heart rate and increases stroke volume B represents the sympathetic nervous system A represents the parasympathetic nervous system Without stimulation from A or B the heart will quit beating a all of the above are TRUE b none of the above are TRUE c 1 2 and 3 are TRUE d 2 3 and 4 are TRUE e 3 4 and 5 are TRUE 2 4 pts Which of the following are TRUE in the diagram at right 1 2 3 4 5 Excretion only occurs in A Filtration only occurs in E The majority of reabsorption occurs in B Hormonal regulation can affect the permeability of E D is the ascending loop of Henle a all of the above are TRUE b none of the above are TRUE c 1 2 and 3 are TRUE d 2 3 and 4 are TRUE e 3 4 and 5 are TRUE Page 2 of 8 3 4 pts You are examining the microscopic and molecular structure of fast twitch glycolytic fibers a type of tissue Compared to slow twitch oxidative fibers you notice that the diameter of the fast twitch glycolytic fibers is and the overall color is This color difference is not surprising because fasttwitch fibers have less a b c d skeletal muscle larger more pale myoglobin cardiac muscle larger more pale myoglobin cardiac muscle smaller more pale hemoglobin skeletal muscle smaller darker red hemoglobin 4 4 pts Regarding the immune system 1 neutrophils are phagocytes in blood and macrophages are phagocytes in tissue 2 mast cells play a role in inflammation 3 lymph nodes are where B lymphocytes and T lymphocytes are made 4 memory cells and effector cells are the main reason we have an innate immune response 5 the spleen is an example of encapsulated lymphoid tissue a all of the above are TRUE b none of the above are TRUe c 1 2 and 5 are TRUE d 1 2 and 3 are TRUE e 3 4 and 5 are TRUE 5 4 pts Which of the following statements are TRUE regarding the regulation of pulmonary ventilation 1 The hypothalamus controls breathing rate 2 The rhythmic pattern of breathing may be due unstable membrane potentials or respiratory pacemakers 3 CO2 O2 and pH levels are monitored by the sensory nervous system and can affect breathing rate 4 Skeletal muscles innervated by the somatic motor nervous system cause inspiration and expiration a all of the above are TRUE b none of the above are TRUE c 1 2 and 3 are TRUE d 2 3 and 4 are TRUE 6 In the diagram to the right this is the a vena cava b aorta c pulmonary artery d pulmonary vein 7 In the diagram to the right this is the a left atrium b left ventricle c right atrium d right ventricle 8 In the diagram to the right this chamber is a thinnest walled because of very little cardiac muscle b thickest walled because of a large amount of cardiac muscle c where the vena cava enters the heart d where the pulmonary artery exits the heart Page 3 of 8 9 This structure prevents the passive transfer of depolarization from the atria to the ventricles a fibrous skeleton barrier b SA node c AV node d QRS complex 10 Myocardial infarctions heart attacks a are due to an inadequate oxygen supply to cardiac muscle b usually are preceded by referred pain c typically do not cause loss of consciousness d all of the above e none of the above 11 Which of the following would tend to increase cardiac output a an increase in stroke volume b an increase in parasympathetic stimulation c an increase in acetylcholine release d all of the above would tend to increase cardiac output e none of the above would tend to increase cardiac output 12 The diagram to the right depicts a a skeletal muscle action potential b a cardiac muscle action potential c a cardiac arrythmia d a cardiac pacemaker potential 13 In the diagram to the right step 2 is due to a Na exiting b K entering c Ca entering d Cl exiting 14 Which of the following are required before myosin can bind to actin and exert the power stroke a Ca bound troponin shifts tropomyosin away from the binding site b excitation by the sympathetic nervous system c sufficient ATP to bind to actin and attract the myosin molecules d all of the above are required e none of the above are required 15 Which of the following skeletal muscle processes directly require ATP a release of Ca from the sarcoplasmic reticulum b depolarization of t tubules c release of neurotransmitter at the neuromuscular junction d all of the above e none of the above 16 The diagram to the right depicts smooth muscle structure and function and is different from skeletal muscle structure and function because a smooth muscle is not sarcomere based b smooth muscle contraction is not regulated by troponin and tropomyosin c myosin power strokes pull actin filaments in opposing directions rather than towards a center or m line d all of the above e none of the above Page 4 of 8 17 Smooth muscle contraction a requires less oxygen than …