Question 1

Which artery is NOT paired with the part of the body to which it supplies blood?

Accepted Answer

A) radial - forearm 
B) anterior tibial - lower leg 
C) brachial - shoulder 
D) femoral - thigh 
A) radial - forearm 
B) anterior tibial - lower leg 
C) brachial - shoulder 
D) femoral - thigh

Question 2

Which statement is NOT true of capillaries?

Accepted Answer

A) They are made of simple squamous epithelium that is thin. 
B) Their function is to exchange materials between the blood and the tissue fluid (or cells). 
C) Gases are exchanged by the process of osmosis. 
D) They are found in networks in most tissues. 
A) They are made of simple squamous epithelium that is thin. 
B) Their function is to exchange materials between the blood and the tissue fluid (or cells). 
C) Gases are exchanged by the process of osmosis. 
D) They are found in networks in most tissues.

Question 3

During exercise, blood flow to the digestive tract will ____________________, and blood flow to the skin will ____________________.

Accepted Answer

decrease,

Question 4

The effect of the hormone ADH on blood pressure is to:

Accepted Answer

A) raise it by increasing blood volume 
B) lower it by decreasing blood volume 
C) lower it by causing vasoconstriction 
D) raise it by causing vasodilation 
A) raise it by increasing blood volume 
B) lower it by decreasing blood volume 
C) lower it by causing vasoconstriction 
D) raise it by causing vasodilation

Question 5

Blood flow into capillary networks is regulated by:

Accepted Answer

A) precapillary sphincters made of fibrous connective tissue 
B) postcapillary sphincters made of fibrous connective tissue 
C) precapillary sphincters made of smooth muscle 
D) postcapillary sphincters made of smooth muscle 
A) precapillary sphincters made of fibrous connective tissue 
B) postcapillary sphincters made of fibrous connective tissue 
C) precapillary sphincters made of smooth muscle 
D) postcapillary sphincters made of smooth muscle

Question 6

Blood pressure in the pulmonary circulation and capillaries is:

Accepted Answer

A) always high, to get sufficient oxygen into the blood 
B) always high, to get carbon dioxide out of the alveoli 
C) always low, to prevent rupture 
D) always low, to prevent filtration and accumulation of fluid in the alveoli 
A) always high, to get sufficient oxygen into the blood 
B) always high, to get carbon dioxide out of the alveoli 
C) always low, to prevent rupture 
D) always low, to prevent filtration and accumulation of fluid in the alveoli

Question 7

One purpose of portal circulation is to enable the liver to receive the iron of ____________________ destroyed in the spleen and ____________________ any excess.

Accepted Answer

old red blood cells,

Question 8

Velocity of blood flow is inversely related to the ____________________ of the particular part of the vascular system.

Accepted Answer

cross-sect

Question 9

In capillaries, diffusion is the process by which:

Accepted Answer

A) nutrients are brought to tissues 
B) waste products are brought to tissues 
C) hormones exert their effects 
D) gases are exchanged 
A) nutrients are brought to tissues 
B) waste products are brought to tissues 
C) hormones exert their effects 
D) gases are exchanged

Question 10

Starling's law of the heart says that when cardiac muscle fibers are stretched, they will:

Accepted Answer

A) contract more forcefully 
B) contract less forcefully 
C) contract more rapidly 
D) contract more slowly 
A) contract more forcefully 
B) contract less forcefully 
C) contract more rapidly 
D) contract more slowly

Question 11

When blood flow through the kidneys decreases, the process of ____________________ decreases, and ____________________ is conserved to maintain BP.

Accepted Answer

filtration

Question 12

The ____________________ of the brain regulates the diameter of arteries and veins.

Accepted Answer

The answer of The ____________________ of the brain regulates the...

Question 13

When venous return increases, the heart contracts more forcefully; this is called ____________________.

Accepted Answer

Starling's

Question 14

During exercise, blood flow to the brain will:

Accepted Answer

A) increase 
B) decrease 
C) remain the same 
D) be unpredictable 
A) increase 
B) decrease 
C) remain the same 
D) be unpredictable

Question 15

Velocity of blood flow is slowest in the:

Accepted Answer

A) arteries 
B) capillaries 
C) veins 
D) aorta 
A) arteries 
B) capillaries 
C) veins 
D) aorta

Question 16

Which statement is NOT true of venous return?

Accepted Answer

A) The respiratory pump increases venous return in the veins of the chest cavity. 
B) Walking increases venous return in the legs. 
C) The smooth muscle of veins enables them to constrict and increase venous return. 
D) If venous return decreases, cardiac output will increase to compensate. 
A) The respiratory pump increases venous return in the veins of the chest cavity. 
B) Walking increases venous return in the legs. 
C) The smooth muscle of veins enables them to constrict and increase venous return. 
D) If venous return decreases, cardiac output will increase to compensate.

Question 17

The venous return mechanism that is especially important for the veins in the thoracic cavity is the ____________________.

Accepted Answer

The answer of The venous return mechanism that is especially...

Question 18

In fetal circulation, the ____________________ permits blood to flow from the right atrium to the left atrium.

Accepted Answer

The answer of In fetal circulation, the ____________________ permits blood...

Question 19

The purpose of the foramen ovale and the ductus arteriosus is to permit most blood to:

Accepted Answer

A) bypass the fetal liver 
B) flow more slowly through the fetal lungs 
C) flow through the fetal liver 
D) bypass the fetal lungs 
A) bypass the fetal liver 
B) flow more slowly through the fetal lungs 
C) flow through the fetal liver 
D) bypass the fetal lungs

Question 20

Which of the following statements are true of the valves of the heart? (Read carefully and select all of the correct statements.)

Accepted Answer

A) The pulmonary and aortic valves are important to prevent backflow of blood when the ventricles contract. 
B) The right and left AV valves are important to prevent backflow of blood when the ventricles relax. 
C) The pulmonary and aortic semilunar valves prevent backflow of blood from arteries to ventricles. 
D) The edges of the semilunar valves are anchored by the chordae tendineae and papillary muscles. 
E) The right and left AV valves prevent backflow of blood from atria to ventricles.
F)The valve openings are kept from stretching by the fibrous skeleton of the heart. 
A) The pulmonary and aortic valves are important to prevent backflow of blood when the ventricles contract. 
B) The right and left AV valves are important to prevent backflow of blood when the ventricles relax. 
C) The pulmonary and aortic semilunar valves prevent backflow of blood from arteries to ventricles. 
D) The edges of the semilunar valves are anchored by the chordae tendineae and papillary muscles. 
E) The right and left AV valves prevent backflow of blood from atria to ventricles.
F)The valve openings are kept from stretching by the fibrous skeleton of the heart.

Exam 13: The Vascular System

Which artery is NOT paired with the part of the body to which it supplies blood?

Which statement is NOT true of capillaries?

During exercise, blood flow to the digestive tract will ____________________, and blood flow to the skin will ____________________.

The effect of the hormone ADH on blood pressure is to:

Blood flow into capillary networks is regulated by:

Blood pressure in the pulmonary circulation and capillaries is:

One purpose of portal circulation is to enable the liver to receive the iron of ____________________ destroyed in the spleen and ____________________ any excess.

Velocity of blood flow is inversely related to the ____________________ of the particular part of the vascular system.

In capillaries, diffusion is the process by which:

Starling's law of the heart says that when cardiac muscle fibers are stretched, they will:

When blood flow through the kidneys decreases, the process of ____________________ decreases, and ____________________ is conserved to maintain BP.

The ____________________ of the brain regulates the diameter of arteries and veins.

When venous return increases, the heart contracts more forcefully; this is called ____________________.

During exercise, blood flow to the brain will:

Velocity of blood flow is slowest in the:

Which statement is NOT true of venous return?

The venous return mechanism that is especially important for the veins in the thoracic cavity is the ____________________.

In fetal circulation, the ____________________ permits blood to flow from the right atrium to the left atrium.

The purpose of the foramen ovale and the ductus arteriosus is to permit most blood to:

Which of the following statements are true of the valves of the heart? (Read carefully and select all of the correct statements.)

Organization and General Plan of the Body

Some Basic Chemistry

Cells

Tissues and Membranes

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The Senses

The Endocrine System

Blood

The Heart

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Body Temperature and Metabolism

The Urinary System

Fluidelectrolyte and Acidbase Balance

The Reproductive Systems

Human Development and Genetics

An Introduction to Microbiology and Human Disease

Filters

During exercise, blood flow to the digestive tract will , and blood flow to the skin will .

One purpose of portal circulation is to enable the liver to receive the iron of destroyed in the spleen and any excess.

When blood flow through the kidneys decreases, the process of decreases, and is conserved to maintain BP.