Quiz #2

Which of the following phases of processing food by the digestive system correctly matches the organ with the process?

Absorption - small intestine

Maintaining a biological parameter, such as blood glucose concentrations, in a normal range is called

Homeostasis

The body maintains blood [glucose] in homeostasis. How would you predict the endocrine system would respond to a decrease in blood [glucose]?

It would increase the release of glucagon, which would increase the blood [glucose].

The body maintains blood [glucose] in homeostasis. How would you predict the endocrine system would respond to an increase in blood [glucose]?

It would increase the release of insulin, which would decrease the blood [glucose].

In a biological system being maintained in homeostasis, ___________________ brings the parameter back into the homeostatic range.

Negative feedback

Which of the following LEAST likely to be involved in maintaining homeostasis of blood glucose concentrations?

Temperature

Imagine a system in homeostasis. The blood pressure drops. Part of the homeostatic response is for the endocrine system to release adrenaline. Adrenaline increases heart rate, which increases blood pressure back to the normal range. Which part of this system is the parameter under homeostatic control?

The heart

Imagine a graph of negative feedback controlling the pH of the blood, with time on the x axis (horizontal axis) and pH of the blood on the y axis (vertical axis). High blood pH values are at the top of the y axis and low pH values are at the bottom of the y axis. Which of the following best describes how the graph would look if it showed negative feedback control of pH of the blood?

a line that was horizontal, then went up, then returned to where it started and was horizontal again

Which of the following occurs mostly in the small intestine of the digestive system?

absorption

The cardiovascular system does NOT

carry the ATP generated by cellular respiration.

If you ran a blood test and found no insulin and higher than normal concentrations of glucose in a patient an hour after they drank a glucose solution, you would predict that the person

had type I diabetes.

If you ran a blood test and found normal or high concentrations of insulin and higher than normal concentrations of glucose in a patient an hour after they drank a glucose solution, you would predict that the person

had type II diabetes.

The hormone that causes glucose channels to be added to the plasma membrane of cells is

insulin

Insulin

is a hormone released when blood [glucose] is high.

Homeostasis

is the process of maintaining a parameter in a normal range with negative feedback.

You run a blood test on a person who was not exercising, who does not have any diabetes, and who drank a large amount of glucose about a half hour before the blood test. Compared to the results of a blood test on the same person before they drank the glucose, you would expect the blood from the test one-half hour after the glucose drink to have

lower [glucagon], higher [insulin] and higher [glucose].

Which of the following is an example of kinetic energy?

molecules moving around in a cell

Assume a person just drank a glucose solution and is sitting quietly. Injecting insulin would cause ______, compared to when there was no insulin injected.

more glucose to move into cells in muscles

If you run a blood test on a person who was not exercising and found high concentrations of glucagon and low concentrations of insulin, you would predict that the person

person did not eat for a while

The endocrine system

regulates the process of hormones

Which type of energy is correctly matched with an example of that type of energy?

the bonds in a molecule - potential energy

Which organ system moves oxygen, carbon dioxide and hormones through the body?

the cardiovascular system

Which organ systems work together to bring hormones to target cells?

the endocrine and the cardiovascular systems

How does carbon dioxide get to the atmosphere from the tissues of the body?

the pulmonary and cardiovascular systems

How does oxygen get from the atmosphere to the tissues of the body?

the pulmonary and cardiovascular systems

Which organ systems work together to bring oxygen to cells?

the pulmonary and the cardiovascular systems