Aphy 102 Midterm Exam - Ivy Tech Questions And Verified Answers | Passed | A+

What is hematocrit? {Ans: the ratio of the volume of red blood cells to the total volume of blood}Why is vitamin A important? {Ans: Normal vision, immunity and reproduction, also helps heart,lungs,kidney and other organs working properly}What is the function of the salivary glands? {Ans: produce saliva, initiates breakdown of carbohydrates}Describe steroid hormones {Ans: -diffuse through cell membranes into cytoplasm or nucleus -combine with a receptor molecule binding to DNA -promote transcription of mRNA -mRNA enters cytoplasm directing protein synthesis}What is pus? {Ans: It is the accumulation of damaged tissue and dead microbes, granulocytes, and macrophages.}How are the heart sounds made? {Ans: The first heart sound "lubb" occurs during ventricular systole as a result of the A-V valves closing. The second heart sound "dupp" occurs during ventricular diastole as a result of the pulmonary and aortic semilunar valves closing.}