Question 1

How can arthropods maintain a high metabolism despite the absence of a closed circulatory system?

Accepted Answer

A)  In species with wings, the beating of the wings moves air across their tissues, thus acting analogously to a heart pumping blood through vessels. 
B)  They do not use their circulatory system for gas exchange. 
C)  They have small tubes throughout their bodies bring air from the outside to the tissues. 
D)  Both b and c 
E)  None of the above 
A)  In species with wings, the beating of the wings moves air across their tissues, thus acting analogously to a heart pumping blood through vessels. 
B)  They do not use their circulatory system for gas exchange. 
C)  They have small tubes throughout their bodies bring air from the outside to the tissues. 
D)  Both b and c 
E)  None of the above

Question 2

Blood clotting

Accepted Answer

A)  is impaired in patients with hemophilia because they do not produce platelets. 
B)  is initiated when platelets release fibrinogen. 
C)  involves a cascade of factors produced in the liver. 
D)  is initiated by leukocytes forming a meshwork. 
E)  requires production of angiotensin. 
A)  is impaired in patients with hemophilia because they do not produce platelets. 
B)  is initiated when platelets release fibrinogen. 
C)  involves a cascade of factors produced in the liver. 
D)  is initiated by leukocytes forming a meshwork. 
E)  requires production of angiotensin.

Question 3

The net loss of fluid from blood capillaries increases if

Accepted Answer

A)  plasma filtration decreases. 
B)  the osmotic pressure of plasma increases. 
C)  blood pressure increases in the capillaries. 
D)  the osmotic pressure of interstitial fluid decreases. 
E)  blood pressure drops below osmotic pressure. 
A)  plasma filtration decreases. 
B)  the osmotic pressure of plasma increases. 
C)  blood pressure increases in the capillaries. 
D)  the osmotic pressure of interstitial fluid decreases. 
E)  blood pressure drops below osmotic pressure.

Question 4

The brain's cardiovascular control center is in the _______.

Accepted Answer

The answer of The brain's cardiovascular control center is in...

Question 5

In organisms with a closed circulatory system, the liquid surrounding cells in the body is called _______ fluid.

Accepted Answer

The answer of In organisms with a closed circulatory system,...

Question 6

Blood velocity through capillaries is slow because

Accepted Answer

A)  much blood volume is lost from the capillaries. 
B)  the pressure in venules is high. 
C)  the total cross-sectional area of capillaries is larger than that of arterioles. 
D)  the osmotic pressure in capillaries is very high. 
E)  erythrocytes must pass through in single file. 
A)  much blood volume is lost from the capillaries. 
B)  the pressure in venules is high. 
C)  the total cross-sectional area of capillaries is larger than that of arterioles. 
D)  the osmotic pressure in capillaries is very high. 
E)  erythrocytes must pass through in single file.

Question 7

_______ are vessels that carry blood away from the heart; _______ are vessels that carry blood back to the heart.

Accepted Answer

The answer of _______ are vessels that carry blood away...

Question 8

Blood flows through two circuits in

Accepted Answer

A)  insects. 
B)  fish. 
C)  amphibians. 
D)  birds. 
E)  reptiles. 
A)  insects. 
B)  fish. 
C)  amphibians. 
D)  birds. 
E)  reptiles.

Question 9

The atrial walls are _______ the ventricular wall, and pressure generated in the atrial chambers is _______ the pressure in the ventricles.

Accepted Answer

A)  thinner than; higher than 
B)  thinner than; lower than 
C)  thicker than; higher than 
D)  thicker than; lower than 
E)  the same thickness as; the same as 
A)  thinner than; higher than 
B)  thinner than; lower than 
C)  thicker than; higher than 
D)  thicker than; lower than 
E)  the same thickness as; the same as

Question 10

In the electrocardiogram (EKG) of a normal cardiac cycle, the wave called T corresponds to

Accepted Answer

A)  depolarization of the atria. 
B)  depolarization of the ventricles. 
C)  repolarization of the atria. 
D)  repolarization of the ventricles. 
E)  Both a and b 
A)  depolarization of the atria. 
B)  depolarization of the ventricles. 
C)  repolarization of the atria. 
D)  repolarization of the ventricles. 
E)  Both a and b

Question 11

Which of the following is not a cellular portion of the blood?

Accepted Answer

A)  Red blood cells 
B)  Proteins 
C)  White blood cells 
D)  Platelets 
E)  Salts 
A)  Red blood cells 
B)  Proteins 
C)  White blood cells 
D)  Platelets 
E)  Salts

Question 12

Cell fragments responsible for blood clotting are called _______.

Accepted Answer

The answer of Cell fragments responsible for blood clotting are...

Question 13

What are the important differences between the circulatory system of a fish and that of a turtle?

Accepted Answer

The fish have a two-chambered heart (one

Question 14

Imagine that a paleontologist finds a fragment of a fossilized vertebrate that indicates that the animal had a four-chambered heart. The animal could be a(n)

Accepted Answer

A)  fish. 
B)  amphibian. 
C)  crocodile. 
D)  bird. 
E)  Both c and d 
A)  fish. 
B)  amphibian. 
C)  crocodile. 
D)  bird. 
E)  Both c and d

Question 15

The blood or fluid leaving the vessels and percolating through tissues is found in

Accepted Answer

A)  the vertebrate circulatory systems. 
B)  the human heart. 
C)  open circulatory systems. 
D)  closed circulatory systems. 
E)  mammals. 
A)  the vertebrate circulatory systems. 
B)  the human heart. 
C)  open circulatory systems. 
D)  closed circulatory systems. 
E)  mammals.

Question 16

The function of leukocytes is to

Accepted Answer

A)  destroy foreign cells or to produce antibodies. 
B)  transport respiratory gases. 
C)  stimulate blood clotting. 
D)  distribute nutrients to tissues. 
E)  produce the different types of blood cells. 
A)  destroy foreign cells or to produce antibodies. 
B)  transport respiratory gases. 
C)  stimulate blood clotting. 
D)  distribute nutrients to tissues. 
E)  produce the different types of blood cells.

Question 17

The condition called _______ results from accumulation of interstitial fluids and tissue swelling.

Accepted Answer

The answer of The condition called _______ results from accumulation...

Question 18

Which of the following statements about open circulatory systems is false?

Accepted Answer

A)  A pump is usually present. 
B)  Blood is pumped out of openings in the heart called ostia. 
C)  The blood is the interstitial fluid. 
D)  Tissue fluid bathes the tissues directly. 
E)  Many mollusks and all arthropods have open circulatory systems. 
A)  A pump is usually present. 
B)  Blood is pumped out of openings in the heart called ostia. 
C)  The blood is the interstitial fluid. 
D)  Tissue fluid bathes the tissues directly. 
E)  Many mollusks and all arthropods have open circulatory systems.

Question 19

Use the following to answer questions:
Refer to the diagram below of the mammalian circulatory system.  
-The left ventricle is indicated at which point?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  The left ventricle is not represented in the diagram. 
A)  1 
B)  2 
C)  3 
D)  4 
E)  The left ventricle is not represented in the diagram.

Question 20

Arthropods, mollusks, and some other invertebrates have a(n) _______ circulatory system.

Accepted Answer

The answer of Arthropods, mollusks, and some other invertebrates have...

Exam 50: Circulatory Systems

How can arthropods maintain a high metabolism despite the absence of a closed circulatory system?

Blood clotting

The net loss of fluid from blood capillaries increases if

The brain's cardiovascular control center is in the _______.

In organisms with a closed circulatory system, the liquid surrounding cells in the body is called _______ fluid.

Blood velocity through capillaries is slow because

_______ are vessels that carry blood away from the heart; _______ are vessels that carry blood back to the heart.

Blood flows through two circuits in

The atrial walls are _______ the ventricular wall, and pressure generated in the atrial chambers is _______ the pressure in the ventricles.

In the electrocardiogram (EKG) of a normal cardiac cycle, the wave called T corresponds to

Which of the following is not a cellular portion of the blood?

Cell fragments responsible for blood clotting are called _______.

What are the important differences between the circulatory system of a fish and that of a turtle?

Imagine that a paleontologist finds a fragment of a fossilized vertebrate that indicates that the animal had a four-chambered heart. The animal could be a(n)

The blood or fluid leaving the vessels and percolating through tissues is found in

The function of leukocytes is to

The condition called _______ results from accumulation of interstitial fluids and tissue swelling.

Which of the following statements about open circulatory systems is false?

Use the following to answer questions: Refer to the diagram below of the mammalian circulatory system. -The left ventricle is indicated at which point?

Arthropods, mollusks, and some other invertebrates have a(n) _______ circulatory system.

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Signaling and Communication

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinent Dna and Biotechnology

Differential Gene Expression in Development

Development and Evolutionary Change

Evidence and Mechanisms of Evolution

Reconstructing and Using Phylogenies

Species and Their Formation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria and Archaea: the Prokaryotic Domains

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

Fungi: Recyclers, Pathogens, Parasites, and Plant Partners

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

The Plant Body

Transport in Plants

Plant Nutrition

Regulation of Plant Growth

Reproduction in Flowering Plants

Plant Responses to Environmental Challenges

Physiology, Homeostasis, and Temperature Regulation

Animal Hormones

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Function

Musculoskeletal Systems

Gas Exchange in Animals

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen

Animal Behavior

Ecology and the Distribution of Life

Population Ecology

Species Interaction and Coevolution

Community Ecology

Ecosystems and Global Ecology

Conservation Biology

Filters

_ are vessels that carry blood away from the heart; _ are vessels that carry blood back to the heart.

The atrial walls are _ the ventricular wall, and pressure generated in the atrial chambers is _ the pressure in the ventricles.