Question 1

All of the following are true of the SA node EXCEPT that it

Accepted Answer

A)  directly stimulates the ventricles. 
B)  is the pacemaker. 
C)  directly stimulates the atria. 
D)  is influenced by nerve impulses and hormones. 
A)  directly stimulates the ventricles. 
B)  is the pacemaker. 
C)  directly stimulates the atria. 
D)  is influenced by nerve impulses and hormones.

Question 2

What is the advantage of a closed circulatory system over an open one?

Accepted Answer

A)  Blood flows more slowly in a closed system. 
B)  In a closed system, the blood comes nearer to each cell. 
C)  A closed system carries more blood. 
D)  There are more blood cells in a closed system. 
E)  A closed system moves blood more efficiently. 
A)  Blood flows more slowly in a closed system. 
B)  In a closed system, the blood comes nearer to each cell. 
C)  A closed system carries more blood. 
D)  There are more blood cells in a closed system. 
E)  A closed system moves blood more efficiently.

Question 3

Plasma is primarily

Accepted Answer

A)  cells. 
B)  water. 
C)  salt. 
D)  gases. 
E)  protein. 
A)  cells. 
B)  water. 
C)  salt. 
D)  gases. 
E)  protein.

Question 4

Plasma contains all of the following components EXCEPT

Accepted Answer

A)  lymph. 
B)  albumin. 
C)  hormones. 
D)  water. 
A)  lymph. 
B)  albumin. 
C)  hormones. 
D)  water.

Question 5

In animals that have open circulatory systems, the interstitial fluid that functions as blood is called

Accepted Answer

A)  lymph. 
B)  hemocoel. 
C)  hemolymph. 
D)  plasma. 
E)  leukocyte. 
A)  lymph. 
B)  hemocoel. 
C)  hemolymph. 
D)  plasma. 
E)  leukocyte.

Question 6

Which set of chambers supplies blood to the pulmonary circulation?

Accepted Answer

A)  Left atrium and left ventricle 
B)  Right atrium and right ventricle 
C)  Ventricles 
D)  Atria 
A)  Left atrium and left ventricle 
B)  Right atrium and right ventricle 
C)  Ventricles 
D)  Atria

Question 7

A diagnosis of (or high blood pressure) is made when blood pressure is higher than 140/90.

Accepted Answer

The answer of A diagnosis of (or high blood pressure)...

Question 8

The left ventricle is more muscular than the right ventricle because it must push the blood

Accepted Answer

A)  through the pulmonary arteries only. 
B)  through wider blood vessels. 
C)  through the body's extensive system of vessels that nourish all cells. 
D)  against gas pressure in the lungs. 
A)  through the pulmonary arteries only. 
B)  through wider blood vessels. 
C)  through the body's extensive system of vessels that nourish all cells. 
D)  against gas pressure in the lungs.

Question 9

Which of the following has the lowest pressure?

Accepted Answer

A)  Venules 
B)  Capillaries 
C)  Veins 
D)  Arterioles 
E)  Arteries 
A)  Venules 
B)  Capillaries 
C)  Veins 
D)  Arterioles 
E)  Arteries

Question 10

The liver is the primary producer of albumin. People with liver failure often show signs of extensive edema (tiss swelling). The edema occurs because fluid in the tissues is less likely to return to the blood due to a breakdown i osmotic gradient that normally exists. Based on this scenario, which of the following statements explains this phenomenon?

Accepted Answer

A)  The failing liver releases more albumin into the blood than normal. 
B)  Albumin, which is not normally released by the liver, causes an increase in blood pressure, which forces fluid into the tissues from the capillaries. 
C)  The failing liver releases less albumin into the blood than normal. 
D)  Albumin, which is not normally released by the liver, causes capillaries to become leaky and release fluid into the surrounding tissues. 
A)  The failing liver releases more albumin into the blood than normal. 
B)  Albumin, which is not normally released by the liver, causes an increase in blood pressure, which forces fluid into the tissues from the capillaries. 
C)  The failing liver releases less albumin into the blood than normal. 
D)  Albumin, which is not normally released by the liver, causes capillaries to become leaky and release fluid into the surrounding tissues.

Question 11

If a person's blood pressure is 120/70, the 70 refers to the pressure

Accepted Answer

A)  during contraction of the vena cava. 
B)  during relaxation of the heart. 
C)  lowering between contractions. 
D)  during contraction of both ventricles. 
E)  during contraction of the left ventricle only. 
A)  during contraction of the vena cava. 
B)  during relaxation of the heart. 
C)  lowering between contractions. 
D)  during contraction of both ventricles. 
E)  during contraction of the left ventricle only.

Question 12

What is the role of erythropoietin?

Accepted Answer

It simulates the bon

Question 13

Which is the "good" cholesterol?

Accepted Answer

A)  VHDL 
B)  HDL 
C)  LDL 
D)  VLDL 
A)  VHDL 
B)  HDL 
C)  LDL 
D)  VLDL

Question 14

Which of these animals has a heart with only two chambers?

Accepted Answer

A)  Human 
B)  Cat 
C)  Goldfish 
D)  Hummingbird 
E)  Bullfrog 
A)  Human 
B)  Cat 
C)  Goldfish 
D)  Hummingbird 
E)  Bullfrog

Question 15

When your physician takes your pulse, he or she is feeling the expansion and contraction of your

Accepted Answer

A)  capillaries. 
B)  arteries or arterioles. 
C)  veins or venules. 
D)  arteries and veins. 
A)  capillaries. 
B)  arteries or arterioles. 
C)  veins or venules. 
D)  arteries and veins.

Question 16

What happens to the speed of blood as it passes through the capillaries?

Accepted Answer

A)  It decreases slightly. 
B)  It increases greatly. 
C)  It increases slightly. 
D)  It depends on the location of the capillaries. 
E)  It decreases greatly. 
A)  It decreases slightly. 
B)  It increases greatly. 
C)  It increases slightly. 
D)  It depends on the location of the capillaries. 
E)  It decreases greatly.

Question 17

Erythrocytes are produced in the

Accepted Answer

A)  liver. 
B)  spleen. 
C)  heart. 
D)  bone marrow. 
A)  liver. 
B)  spleen. 
C)  heart. 
D)  bone marrow.

Question 18

Fishes have a two- chambered heart, a single atrium, and a single ventricle.

Accepted Answer

A) True 
 B)False

Question 19

The period of time in which the ventricles contract is known as ventricular .

Accepted Answer

The answer of The period of time in which the...

Question 20

Each of the following types of white blood cells is found within the circulatory system EXCEPT

Accepted Answer

A)  leukocytes. 
B)  macrophages. 
C)  monocytes. 
D)  lymphocytes. 
A)  leukocytes. 
B)  macrophages. 
C)  monocytes. 
D)  lymphocytes.

Exam 33: Circulation

All of the following are true of the SA node EXCEPT that it

What is the advantage of a closed circulatory system over an open one?

Plasma is primarily

Plasma contains all of the following components EXCEPT

In animals that have open circulatory systems, the interstitial fluid that functions as blood is called

Which set of chambers supplies blood to the pulmonary circulation?

A diagnosis of (or high blood pressure) is made when blood pressure is higher than 140/90.

The left ventricle is more muscular than the right ventricle because it must push the blood

Which of the following has the lowest pressure?

If a person's blood pressure is 120/70, the 70 refers to the pressure

What is the role of erythropoietin?

Which is the "good" cholesterol?

Which of these animals has a heart with only two chambers?

When your physician takes your pulse, he or she is feeling the expansion and contraction of your

What happens to the speed of blood as it passes through the capillaries?

Erythrocytes are produced in the

Fishes have a two- chambered heart, a single atrium, and a single ventricle.

The period of time in which the ventricles contract is known as ventricular .

Each of the following types of white blood cells is found within the circulatory system EXCEPT

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Cellular Reproduction

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

Dna: the Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity II: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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