ANSWER: CASE-CONTROL STUDY
EXPLANATION:
An epidemiology expert will make use of a Case-control Study for proper determination of association or linkage between the oil spill and the disease outbreak (arthritis).
Case-control Study provides an observational experiment between two existing groups (two reservoirs) differing in outcome (affected and not affected), they are highlighted and compared on the basis of a context (disease outbreak; arthritis).
However, the known group is regarded as the control group and it provides a substantial guide to the confirm the validity of other experimental groups in relation to the general context (outbreak of arthritis).
Im pretty sure it can either be E or B
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Diabetes mellitus and Diabetes Insipidus
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Explanation:
Diabetes mellitus and diabetes insipidus are both metabolic endocrine diseases caused due to hormonal imbalance.
<u>Etiology</u><u>:
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<u>Organ and hormone involved</u><u>: </u>
Diabetes mellitus occurs due to inefficiency of the pancreas to produce sufficient amount of the hormone insulin or lack of insulin action resulting in uncontrolled blood glucose levels.
Diabetes insipidus occurs due to inefficiency of the pituitary glands to produce sufficient amount of the antidiuretic hormone vasopressin or lack of vasopressin action resulting in uncontrolled water metabolism.
<u>Signs and symptoms:
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Diabetes mellitus results in increasing blood glucose levels, polyuria and nocturia, polydipsia, polyphagia, fatigue and various other complications affecting eyes, kidneys, nervous system, and heart as the disease progresses.
Diabetes insipidus results in increasing water levels due kidneys excreting large amounts of diluted urine leading to polyuria, polydipsia, and excessive dehydration and fatigue.
<u>Diagnostic/lab tests and results:
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Diabetes mellitus is tested by testing blood glucose levels.
Diabetes insipidus is tested by testing water deprivation or vasopressin level test/the 24-hour urine for urine osmolality levels along with serum electrolyte level tests.
These tests are based on response to vasopressin, urine concentration abilities, urine osmolality, and electrolyte levels of the blood.
Answer:
external acoustic meatus, tympanic membrane, ossicles, and oval window. incus, stapes, oval window, scala vestibuli perilymph, and cochlear duct endolymph.
