Exam 44: The Endocrine System

You are an attending physician supervising a new resident.Together,you decide to treat a patient with a steroid drug.The resident administers the drug and watches the patient anxiously."It's not working," he mutters.How do you respond?

What is the difference between the endocrine system and the autonomic nervous system?

Hormones must be present at high concentrations to elicit an effect.

What is an example of a molecule that can act as both a neurotransmitter and a hormone?

Ecdysone and juvenile hormone regulate molting and ________ in insects.

There is a molecule in black licorice that inhibits an enzyme which normally limits activation of mineralocorticoid receptors.Thus,overconsumption of licorice can mimic the effect of excess aldosterone.What would be the result?

The thyroid requires negative feedback to prevent overgrowth.

Which of the following hormones exerts its action by interacting with a receptor at the cell surface?

Which of the following hormones is NOT produced by the adrenal gland?

Estrogen and testosterone are steroid hormones that differ by only a few atoms.The different receptor binding properties those differences confer allow the hormones to do what during development?

You are researching an "orphan disease" with no available treatment.Your lab develops a drug that mimics a lipophilic hormone thought to be lacking in the disease,and you are looking for a pharmaceutical company to partner with to run a clinical trial.Based on the reaction from each team,which would you choose to work with?

Women often receive synthetic oxytocin to induce childbirth or augment contractions.What is an important consideration about the use of synthetic oxytocin?

When a diabetic injects insulin,what does this accomplish?

Oxytocin is a peptide hormone that causes uterine contractions in childbirth and stimulates milk secretion from nipples.Do men have oxytocin?

The right atrium secretes atrial natriuretic hormone (ANH),which stimulates the kidneys to excrete salt and water into the urine.ANH acts antagonistically to what other hormone?

Atrial natriuretic hormone (ANH)stimulates the kidneys to excrete salt and water in the urine.Why does it make sense that the heart is the source of ANH?

Which of the following conditions is not associated with diabetes?

Why does consumption of alcohol stimulate urination?

Lampreys completely lack parathyroid glands.Suggest why these glands may be important for other vertebrates,but not for jawless fish.

Why don't hormones build up in the body over time?