Exam 26: Hormones and the Endocrine System

Scientific investigation of the exact effects of environmental steroids on humans is extremely difficult since there are multiple sources of hormones in the environment. A valid study would require a control group that has not been exposed to the chemicals being studied. Since everyone has had some exposure to environmental hormones, no control group is available to use as a reference. Another way to assess the environmental hazard due to steroid hormones is to analyze the amount of residual hormones present following commercial water treatment by water treatment plants. -Which situation would make researchers suspect that there was an excess of steroid hormones in the environment?

Which statement about steroid hormones is true?

Which gland secretes hormones that enable the body to respond to stress?

Which statement about glands and hormones is true?

Which may be a consequence of low secretion of parathyroid hormone?

Which molecule in this figure portraying water-soluble hormone action is the receptor protein?

An excess of T₃ and T₄ in the blood is hyperthyroidism, which in its most common form is called

Results of the experiment yield the data shown in the following graph. What is one overall conclusion that you can draw from these results? The figure shows the percentage of male and female frogs with flame retardants in their blood in two groups: Group 1 was not exposed to flame retardants, and group 2 was exposed to low doses.

Which hormone stimulates and maintains metabolic processes?

Feeling tired after a long day of work, you walk across a parking lot at night to get to your car. As you approach the car you see a shadow extending behind the back of the car. You immediately feel a rush of energy, your heart starts pounding, and you feel wide awake and alert. You are experiencing

Anabolic steroid abuse, the self-administration of hormones such as testosterone for body building or other nonmedical uses, is an increasing concern in society. A study of the effects of added testosterone on behavior yielded the data shown below. They are from the responses to testosterone treatment based on a scale of manic (excited or irritable) behavior for six adult males. Black bars indicate testosterone administration time and white bars indicate placebo administration time. The asterisk for the first subject indicates discontinuation of testosterone treatment after week 5 because of rapidly escalating manic symptoms. Source: Pople, H. G., Kouri, E. M., & Hudson, J. I. (2000). Effects of supraphysiologic doses of testosterone on mood and aggression in normal men: a randomized controlled trial. Archives of general psychiatry, 57(2): 133-140. -Abnormal levels of testosterone might also be expected to cause

Which is an endocrine gland that raises blood calcium levels?

Compared to the endocrine system, the nervous system has a

Which is a nonsteroid hormone?

Which endocrine gland synthesizes melatonin?

Which option correctly pairs an endocrine gland or hormone with an aspect of metabolism that it regulates?

Which hormone causes glucose release and, consequently, a rise in the concentration of sugar in the blood?

A mutation in the gene for hormone A causes it to be unable to bind to its receptor protein. What do you predict will likely happen?

The result of binding a signal molecule to its receptor is

Which gland requires the element iodine to produce its hormones?