Pc 705 module 4 - Study guides, Class notes & Summaries

PC 705 Module 4 Exam - Cardiovascular Changes to the cardiovascular system with aging include: -myocardial & blood vessel stiffening -left ventricular hyperteophy and fibrosis -decrease effectiveness of valves (calcification) -decreased baroreceptor activity -decreased control of vascular tone -loss of exercise capacity What are the risks with age in relation to the cardiovascular system? -risk of CVD -risk of atrial fibrillation -risk of HF releated to LV hypertrophy and fibrosis -risk of val...

Aging and the cardiovascular system - answerCO- no change, HR- decreased slightly, SV- increased slightly, Slight increase in afterload (systolic BP) and prolonged lt ventricular relaxation. Myocardial and blood vessel stiffening, changes in neurogenic control over vascular tone, lt ventricular hypertrophy and fibrosis genetics, environment affect development and severity of atherosclerosis and CAD. Why complex? - answer50% genetic (inflammation), 50% environmental. multiple genes involved....

PC 705 Module 8 Exam - Endocrine and Neurological Disorders Hormone release is regulated by: -chemical factors -endocrine factors -neural control Feedback systems provide? -precise monitoring & control of cell environment What is the most common feedback? Negative —a change in chemical, neural, or endocrine response causes a subsequent decrease in synthesis & excretion of the accompanying hormone Which type of hormones can intiate changes in target cells? -free floating hormones The thyroid ...

PC 705 Module 1 Exam - Stress and Genetics Genotype The exact gene allele composition for a single gene trait Phenotype the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment. Ploidy Number of chromosomes present in nucleus of cell in metaphase at mitosis Haploid 1N—One complete set of chromosomes (23) Ex: gametes Diploid 2N—-both pairs of chromosomes (23 pairs or 46 individual) Polyploidy Extra chromosomes in every pair. ...