UT Knoxville BCMB 230 - BCMB230ex3sf14-1 (4 pages)

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BCMB230ex3sf14-1



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BCMB230ex3sf14-1

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4
School:
University of Tennessee
Course:
Bcmb 230 - Human Physiology
Human Physiology Documents

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BCMB 230 Exam 3 Spring 2014 1 Potassium channels in cardiac pacemakers act to a repolarize cardiac muscle b create a plateau in cardiac membrane potentials c cause potential to reach threshold d create an unstable resting potential in cardiac muscle 2 Which type of ion channel found in cardiac muscle opens at resting potential a T type Ca b F type Na c L type Ca d both a and b 3 A decrease in the release of cortisol due to a tumor in the anterior pituitary would be an example of a a primary hyposecretion b a secondary hyposecretion c a primary hypersecretion d a tertiary hypersecretion 4 The heart valve in the entrance to the systemic circulation is the a tricuspid b bicuspid c aortic semilunar 5 Which of the following is not activated by thrombin a factor 10 b platelets c factor 8 d pulmonary semilunar d factor 13 6 Which of the following hormones would be the slowest to act a cortisol b growth hormone c glucagon 7 Which hormone s is lipid soluble a T3 b epinephrine c LH d calcitonin d ACTH 8 Steroid hormones are produced by the a adrenal medulla b gonads c thyroid gland d both a and c 9 A change in the amount of body fat would have the most influence on the distribution of which hormone a calcitonin b estrogen c glucagon d oxytocin 10 Amine hormones from the thyroid act to change cell behavior by a changing membrane permeability b activating a second messenger c initiating transcription d all of the above 11 Von Willebrand factor a is produced by the liver b is activated by exposure to collagen c initiates the intrinsic clotting pathway d all of the above 12 Tropic hormones are produced by the a anterior pituitary b hypothalamus c placenta d all of the above 13 Secretion of which hormone would be controlled by a tropic hormone a estrogen b TSH c cortisol d all of the above 14 Which hormone acts on the GI tract a somatostatin b glucagon c insulin d all of the above 15 A decrease in plasma glucose levels would stimulate secretion of a glucagon b epinephrine c



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