Question 1

If a researcher is looking for a study organism that possesses a circulatory system, they should choose a

Accepted Answer

Large, active, terrestrial animals require a circulatory system to transport nutrients, gases, and wastes efficiently throughout their bodies due to their size and metabolic demands.

Question 2

Refer to the figure, which shows the human heart.  Which structure in the diagram is mostly responsible for conducting the action potential from the atria to the ventricles? Provide name and number.

Accepted Answer

The answer of Refer to the figure, which shows the...

Question 3

Which of the following about hemolymph is false?

Accepted Answer

Hemolymph is not found in annelids; instead, annelids have a closed circulatory system with blood contained within vessels, not hemolymph. Hemolymph is characteristic of organisms with open circulatory systems, such as arthropods and some mollusks.

Question 4

Evaluate the following statement for accuracy, and explain your

Accepted Answer

The answer of Evaluate the following statement for accuracy, and...

Question 5

Evaluate the following statement for accuracy: Arteries always carry blood high in oxygen and veins always carry blood low in oxygen.

Accepted Answer

The answer of Evaluate the following statement for accuracy: Arteries...

Question 6

Refer to the figure, which shows the mammalian circulatory system.The arrow indicates the direction of blood flow.  Starting with chamber 4, in what order does blood pass through the four chambers of the heart?

Accepted Answer

The answer of Refer to the figure, which shows the...

Question 7

Which of the following about gastrovascular systems is false?

Accepted Answer

Gastrovascular systems are the primary means of distribution of nutrients and gases in organisms that possess them, such as cnidarians and platyhelminthes. They do not supplement circulatory systems because the organisms that have gastrovascular systems typically do not have a separate circulatory system.

Question 8

Evaluate the following statement for accuracy: A person who remains seated for a long time may experience swelling of the feet because blood accumulates in veins of the lower body and this causes osmotic pressure to exceed hydrostatic pressure.

Accepted Answer

The answer of Evaluate the following statement for accuracy: A...

Question 9

In an animal with a closed circulatory system, the types of extracellular fluid found in the body include

Accepted Answer

Blood plasma and interstitial fluid are the two main types of extracellular fluid in animals with a closed circulatory system. Hemolymph is found in animals with an open circulatory system, not closed.

Question 10

In humans, which have a closed circulatory system, _______ makes up less than _______ percent of _______ fluid.

Accepted Answer

In humans, blood plasma makes up less than 25% of extracellular fluid. Interstitial fluid is the fluid that surrounds cells in tissues and makes up the majority of extracellular fluid, while blood plasma is the fluid component of blood. Option A and D are incorrect because interstitial fluid makes up the majority of extracellular fluid, not less than 25%. Option C is incorrect because blood plasma and interstitial fluid are both components of extracellular fluid, and blood plasma makes up less than 25% of extracellular fluid, not interstitial fluid. Option E is incorrect because blood plasma makes up more than 5% of extracellular fluid.

Question 11

Which statement about circulatory systems is false?

Accepted Answer

All circulatory systems have some form of a pump to move blood or a similar fluid around the body; in many organisms, this is a heart or a heart-like structure.

Question 12

Refer to the figure, which shows the human heart. Which structure contains blood with the highest concentration of O₂? Provide name and number.

Accepted Answer

The answer of Refer to the figure, which shows the...

Question 13

Refer to the figure, which shows the human heart.  Name the valve located between structures 6 and 9, and name structures 6 and 9.

Accepted Answer

The answer of Refer to the figure, which shows the...

Question 14

A deficiency of antidiuretic hormone (ADH) results in diabetes insipidus.What symptoms associated with fluid balance would you expect to be associated with this disease?

Accepted Answer

The answer of A deficiency of antidiuretic hormone (ADH) results...

Question 15

Which of the following characterizes an animal that does not have a circulatory system?

Accepted Answer

Animals without a circulatory system are single-celled organisms, such as protists, which rely on diffusion to transport materials in and out of their cells.

Question 16

Refer to the figure, which shows the human heart.  Heart murmurs result when valves do not close completely.If the tricuspid valve did not close completely, blood would flow from which structure into which structure? Provide names and numbers.

Accepted Answer

The answer of Refer to the figure, which shows the...

Question 17

A ventricular septal defect is a congenital heart defect (i.e., a defect present at birth) characterized by a hole in the septum (wall) between the two ventricles.What would be the result of such a defect?

Accepted Answer

The answer of A ventricular septal defect is a congenital...

Question 18

Refer to the figure, which shows the mammalian circulatory system.The arrow indicates the direction of blood flow.  Name the vessel(s) entering chamber 3 and the vessel(s) leaving chamber 1.

Accepted Answer

The answer of Refer to the figure, which shows the...

Question 19

You are a physician and one of your patients, who smokes and suffers from high blood pressure, presents with chest pain and shortness of breath.What condition might these symptoms indicate? What steps likely led to the condition?

Accepted Answer

The answer of You are a physician and one of...

Question 20

Oxygen levels decrease as altitude increases.What physiological changes would you predict regarding components of blood and hormones that regulate them when a person moves to a high mountain town in the Rockies, having previously lived at sea level?

Accepted Answer

The answer of Oxygen levels decrease as altitude increases.What physiological...

Quiz 49: Circulatory Systems

If a researcher is looking for a study organism that possesses a circulatory system, they should choose a

Refer to the figure, which shows the human heart. Which structure in the diagram is mostly responsible for conducting the action potential from the atria to the ventricles? Provide name and number.

Which of the following about hemolymph is false?

Evaluate the following statement for accuracy, and explain your

Evaluate the following statement for accuracy: Arteries always carry blood high in oxygen and veins always carry blood low in oxygen.

Refer to the figure, which shows the mammalian circulatory system.The arrow indicates the direction of blood flow. Starting with chamber 4, in what order does blood pass through the four chambers of the heart?

Which of the following about gastrovascular systems is false?

Evaluate the following statement for accuracy: A person who remains seated for a long time may experience swelling of the feet because blood accumulates in veins of the lower body and this causes osmotic pressure to exceed hydrostatic pressure.

In an animal with a closed circulatory system, the types of extracellular fluid found in the body include

In humans, which have a closed circulatory system, ___ makes up less than _ percent of _____ fluid.

Which statement about circulatory systems is false?

Refer to the figure, which shows the human heart. Which structure contains blood with the highest concentration of O₂? Provide name and number.

Refer to the figure, which shows the human heart. Name the valve located between structures 6 and 9, and name structures 6 and 9.

A deficiency of antidiuretic hormone (ADH) results in diabetes insipidus.What symptoms associated with fluid balance would you expect to be associated with this disease?

Which of the following characterizes an animal that does not have a circulatory system?

Refer to the figure, which shows the human heart. Heart murmurs result when valves do not close completely.If the tricuspid valve did not close completely, blood would flow from which structure into which structure? Provide names and numbers.

A ventricular septal defect is a congenital heart defect (i.e., a defect present at birth) characterized by a hole in the septum (wall) between the two ventricles.What would be the result of such a defect?

Refer to the figure, which shows the mammalian circulatory system.The arrow indicates the direction of blood flow. Name the vessel(s) entering chamber 3 and the vessel(s) leaving chamber 1.

You are a physician and one of your patients, who smokes and suffers from high blood pressure, presents with chest pain and shortness of breath.What condition might these symptoms indicate? What steps likely led to the condition?

Oxygen levels decrease as altitude increases.What physiological changes would you predict regarding components of blood and hormones that regulate them when a person moves to a high mountain town in the Rockies, having previously lived at sea level?

Quiz 49: Circulatory Systems

If a researcher is looking for a study organism that possesses a circulatory system, they should choose a

Refer to the figure, which shows the human heart. Which structure in the diagram is mostly responsible for conducting the action potential from the atria to the ventricles? Provide name and number.

Which of the following about hemolymph is false?

Evaluate the following statement for accuracy, and explain your

Evaluate the following statement for accuracy: Arteries always carry blood high in oxygen and veins always carry blood low in oxygen.

Refer to the figure, which shows the mammalian circulatory system.The arrow indicates the direction of blood flow. Starting with chamber 4, in what order does blood pass through the four chambers of the heart?

Which of the following about gastrovascular systems is false?

Evaluate the following statement for accuracy: A person who remains seated for a long time may experience swelling of the feet because blood accumulates in veins of the lower body and this causes osmotic pressure to exceed hydrostatic pressure.

In an animal with a closed circulatory system, the types of extracellular fluid found in the body include

In humans, which have a closed circulatory system, _______ makes up less than _______ percent of _______ fluid.

Which statement about circulatory systems is false?

Refer to the figure, which shows the human heart. Which structure contains blood with the highest concentration of O2? Provide name and number.

Refer to the figure, which shows the human heart. Name the valve located between structures 6 and 9, and name structures 6 and 9.

A deficiency of antidiuretic hormone (ADH) results in diabetes insipidus.What symptoms associated with fluid balance would you expect to be associated with this disease?

Which of the following characterizes an animal that does not have a circulatory system?

Refer to the figure, which shows the human heart. Heart murmurs result when valves do not close completely.If the tricuspid valve did not close completely, blood would flow from which structure into which structure? Provide names and numbers.

A ventricular septal defect is a congenital heart defect (i.e., a defect present at birth) characterized by a hole in the septum (wall) between the two ventricles.What would be the result of such a defect?

Refer to the figure, which shows the mammalian circulatory system.The arrow indicates the direction of blood flow. Name the vessel(s) entering chamber 3 and the vessel(s) leaving chamber 1.

You are a physician and one of your patients, who smokes and suffers from high blood pressure, presents with chest pain and shortness of breath.What condition might these symptoms indicate? What steps likely led to the condition?

Oxygen levels decrease as altitude increases.What physiological changes would you predict regarding components of blood and hormones that regulate them when a person moves to a high mountain town in the Rockies, having previously lived at sea level?

In humans, which have a closed circulatory system, ___ makes up less than _ percent of _____ fluid.

Refer to the figure, which shows the human heart. Which structure contains blood with the highest concentration of O₂? Provide name and number.