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59) In which of the following cases, is there a greater difference between partial pressures (P) of the gases? A) Between PO2 in the lungs (alveoli) and PO2 in the pulmonary circulation B) Between PCO2 in the pulmonary circulation and PCO2 in the lungs (alveoli) C) Between PO2 in the systemic circulation and PO2 in the body tissues D) Between PCO2 in the body tissues and PCO2 in the systemic circulation  

28)  When the concentration of ADH increases: A)  the specific gravity of the urine decreases. B)  less water is reabsorbed by the nephron and collecting duct. C)  more urine is produced. D)  less urine is produced. E)  more salt is secreted by the nephron.

15) Which male hormone is released from sustentacular cells and therefore inhibits the secretion of FSH? A) ACTH B) inhibin C) ICSH D) testosterone  

37) Which of the following is NOT a correct matching of a fetal structure with what it becomes at birth? A) foramen ovale–fossa ovalis B) ductus arteriosus–ligamentum teres C) ductus venosus–ligamentum venosum D) umbilical arteries–medial umbilical ligaments

Match the following:   A) Glycogenolysis B) Glycogenesis C) Glycolysis D) Gluconeogenesis  

22) Secretion of progesterone mainly stimulates ________. A) contraction of uterine muscles B) lactation of the mammary glands C) secretory activity of the uterine endometrium D) development of female secondary sex characteristics  

46) The expressed form of a gene is described as the organism’s ________. A) phenotype B) karyotype C) genome D) genotype  

11) Based on note comments, the basic difference between spermatogenesis and oogenesis is that ________. A) during spermatogenesis two more polar bodies are produced B) the mature ovum is n, while the sperm is 2n C) in oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced from the parent cell D) spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only

Match the electrolyte composition for the following:   A) Interstitial fluid B) Blood plasma C) Intracellular fluid

67) Match the following