Exam 11: Endocrine System

Removal of the anterior pituitary gland would affect the functioning of which gland(s) or structure(s)?

A hormone binding to its membrane receptor may cause increased permeability to sodium ions.

What is the effect of thyroxine?

What hormone decreases the plasma concentration of calcium?

During a thyroidectomy, a surgeon inadvertenly removes the parathyroid glands from the patient. What is a likely consequence of this error?

What is the action of thymosin hormones?

Releasing hormones from the hypothalamus have target cells in the anterior pituitary gland.

When a gland is stimulated to increase its secretion by the substance it produces, a(n) __________ feedback system is operating.

During which phase of the stress response is cortisol released?

Thyroxine (T ₄) and Triiodothyronine (T ₃) have opposite effects on target cells.

During which phase of the stress response are amino acids used to make glucose?

What primarily controls the secretion of parathyroid hormone?

A group of lipids called __________ have powerful, regulating effects on a variety of tissues.

What symptoms would result from an excess release of hormones from the adrenal medulla?

What hormone sustains milk production after birth?

What disorder is caused by an oversecretion of growth hormone during childhood?

The sex hormones from the adrenal cortex are primarily androgens.

After a meal, glucose levels in the blood rise and, in response, the pancreas releases a hormone to lower blood glucose. This is an example of which control pathway?

Oxytocin acts on the myoepithelial cells of the breastsand causes the ejection of breast milk.

The __________ gland must have iodine before it can synthesize its hormones.