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McGill University
PHGY 210
Anne Weschler

PHGY 210 001002Mammalian Physiology 2 FINAL EXAMINATION1Which of the following conditions can be a cause of cretinisma Hyperthyroidism during infancyb Hyperparathyroidism during infancy c Production of too much parathyroid hormone because of a parathyroid tumor d Excess dietary iodine during infancy e None of the above statements is correct2 Acromegaly arises from a production of too much growth hormone during infancy b production of too much growth hormone during adulthood c failure to synthesis testosterone d malnutrition during adulthoode hypothyroidism during infancy3 Oxytocin a is produced in females only b is related in structure to human chorionic gonadotropin c is a steroid hormone d induces milk ejection from the lactating mammary gland e is released from the anterior pituitary 4 Which of the following statements is NOT true about estrogena It is a steroid hormone produced by the gonads b It controls luteinizing hormone release during the menstrual cycle c It is required for maintenance of bone density in females but not in males d It is a regulator of gene transcription e It is required for bone maturation5 Which of the following brings mixed venous blood to the alveoli for oxygenationa the pulmonary vein b the pulmonary artery c the bronchial artery d the bronchial vein e the foramen ovale6 Airway resistance a is decreased in asthma b is defined as a change in volume for a given change in pressure c is lower in the trachea then in the right or left bronchus d is equal to 1compliance e does not affect airflow2 7 The pulmonary circulationa has lower blood pressure than the systemic circulation b has high vascular resistance c has thick vascular walls d has a pressure drop of approximately 100 mmHg from pulmonary artery to left atriume is responsible for supplying the airways with oxygen8 Which of the following is true about the cardiovascular systema An endothelial cell layer is found only in the atria and ventricles b The chordae tendinae are made of muscle tissue c The Purkinje fibres in the ventricles are specialized neurons d Arteries and veins are rigid ie inelastic tubes e A sinus node cell is a myocyte9 Which of the following is true about the ventricular action potentiala The conduction velocity is slower than that of the atrioventricular nodal action potential b The upstroke phase is less rapid than that of the atrioventricular nodal action potential c There is spontaneous diastolic depolarization d The refractory period is longer than that of a neural action potential e The upstroke phase is generated by the calcium current I CaL 10 A patient has the following ECGWhat rhythm is thisa normal sinus rhythm b sinus arrhythmia c sinus tachycardia d ventricular tachycardia e 31 atrioventricular block11 Which of the following statements is truea A typical systemic mean arterial blood pressure is 120 mm Hg b A typical central venous pressure is 20 cm H0 2c A typical peak right intraventricular pressure is 100 mmHg d For a subject lying flat on her back the pressure in the superior vena cava is greater than the pressure in the right atrium e A typical end diastolic volume is about 50 mL
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