Chpt 13 Quiz 2

What controls most hormone concentrations?

• Exposure to sun

• Muscle contraction

• Positive feedback

• Negative feedback

Why is oxytocin administered to women during childbirth?

• To stimulate uterine contractions

• To inhibit uterine contraction

• To inhibit milk production

• To stimulate ACTH production

In addition to a drop in blood calcium concentration, identify another symptom of hypoparathyroidism.

• Decreased vitamin D concentration

• Increased PTH secretion

• Muscle cramps

• Kidney stones

What is the cause of Type 1 diabetes mellitus?

• An effect of aging

• Obesity

• A disorder of the immune system

• Excess sugar in the diet

What can cause downregulation of a target cell?

• Prolonged elevated concentration of a hormone

• Prolonged decreased concentration of a hormone

• Signals from inhibitory hormones

• Signals from the posterior pituitary

An impending deadline for a major exam at school can be a significant stressor, leading to increased heart rate and elevated cortisol levels in students. This is an example of what kind of stress?

• Physical stress

• Psychological stress

How do exocrine glands differ from endocrine glands?

• Exocrine glands only secrete salts.

• Exocrine glands secrete local hormones.

• Exocrine glands secrete substances into the bloodstream.

• Exocrine glands secrete through ducts or tubes to a free surface.

As a result of the general stress response, blood concentrations of epinephrine_________ and blood concentrations of cortisol_________.

• decrease; decrease

• decrease; increase

• increase; increase

• increase; decrease

What hormone is secreted by the pineal gland?

• Epinephrine

• Melatonin

• Dopamine

• Beta endorphin

Jerry drinks a few beers and soon has to urinate. What effect did alcohol have on the hormonal control of urination?

• It stimulated secretion of ADH.

• It inhibited secretion of ACTH.

• It inhibited secretion of ADH.

• It stimulated secretion of ACTH.