Patho NURS 611 Maryville exam 3 latest update with questions & correct answers graded A+

Patho NURS 611 Maryville exam 3 latest update with questions & correct answers graded A+ What imbalance lessens the rate of secretion of parathyroid hormone (PTH)? a.Increased serum calcium levels b.Decreased serum magnesium levels c.Decreased levels of thyroid-stimulating hormone d.Increased levels of thyroid-stimulating hormone - ANSWER>>>A. The overall effect of parathyroid hormone (PTH)is to increase serum calcium and to decrease serum phosphate concentration. The other presented imbalances will not affect PTH in the described fashion. Regulation of the release of catecholamines from the adrenal medulla is an example of which type of regulation? a.Negative feedback c.Neural b.Positive feedback d.Physiologic - ANSWER>>>c. The release of hormones occurs either in response to an alteration in the cellular environment or in the process of maintaining a regulated level of certain hormones or certain substances. Several different mechanisms, one of which is neural control (e.g., stress-induced release of catecholamines from the adrenal medulla), regulate the release of hormones. The remaining options do not accurately describe the example given. How does a faulty negative-feedback mechanism result in a hormonal imbalance? a.Hormones are not synthesized in response to cellular and tissue activities. b.Decreased hormonal secretion is a response to rising hormone levels. c.Too little hormone production is initiated. d.Excessive hormone production results from a failure to turn off the system. - ANSWER>>>D. Negative-feedback systems are important in maintaining hormones within physiologic ranges. The lack of negative-feedback inhibition on hormonal release often results in pathologic conditions. Excessive hormone production, which is the result of the failure to turn off the system, can cause various hormonal imbalances and related conditions. The correct option is the only accurate description of this hormonal function. Which substance is a water-soluble protein hormone? a.Thyroxine c.Follicle-stimulating hormone b.Aldosterone d.Insulin - ANSWER>>>D. Peptide or protein hormones, such as insulin, pituitary, hypothalamic, and parathyroid, are water soluble and circulate in free (unbound) forms. All the remaining options are fat-soluble hormones. Which of the following is a lipid-soluble hormone? a.Cortisol c.Epinephrine b.Oxytocin d.Growth hormone - ANSWER>>>A Cortisol and adrenal androgens are lipid-soluble hormones and are primarily bound to a carrier or transport protein in circulation. The other options are water-soluble hormones. Most protein hormones are transported in the bloodstream and are: a.Bound to a lipid-soluble carrier b.Free in an unbound, water-soluble form c.Bound to a water soluble-binding protein d.Free because of their lipid-soluble chemistry - ANSWER>>>B Peptide or protein hormones, such as insulin, pituitary, hypothalamic, and parathyroid, are water soluble and circulate in free (unbound) forms. The other options are not true statements related to the transport of protein hormones. when insulin binds its receptors on muscle cells, an increase in glucose uptake by the muscle cells is the result. This is an example of what type of effect by a hormone? a.Pharmacologic c.Synergistic b.Permissive d.Direct - ANSWER>>>D Direct effects are the obvious changes in cell function that specifically result from the stimulation by a particular hormone. The other options are not used to identify the described effect. 8. Thyroid-stimulating hormone (TSH) is released to stimulate thyroid hormone (TH) and is inhibited when plasma levels of TH are adequate. This is an example of: