Patho Exam 2

Question 1

Hypopituitarism

Answer 1

Can be characterized by the absence of one orm more anterior pituitary hormones or the complete failure of all anterior pituitary hormone functions

Question 2

What is SIADH?

Answer 2

When the kidneys are exposed to excessive amounts of antidiuertic hormone (ADH)

Question 3

What causes SIADH?

Answer 3

Post surgery, ectopic production by cancers, pulmonary infections, CNS disorders

Question 4

What is diabetes insipidus?

Answer 4

when there are insufficient amounts of ADH

Question 5

Neurogenic DI

Answer 5

insufficient amounts of ADH secreted due to lesions of hypthalamus or posterior pituitary….caused by brain tumors, stroke, infections, head trauma

Question 6

Nephrogenic DI

Answer 6

Inadequate response to ADH due to renal tubule damage…caused by several renal diseases and drug toxicity (e.g. lithium)

Question 7

Thyroid hormone (T3/T4)

Answer 7

produced by follicle cells of the thyroid gland

Question 8

What are the physiological effects of thyroid hormones

Answer 8

Stimulates metabolism, normal maturation of the nervous system, promotes effects of growth hormone, increases target cell responsiveness to catecholamines

Question 9

Insulin

Answer 9

secreted by the beta cells in the islets of langerhans
has a very short half life
secretion stimulated