Question 1

Veins are able to constrict because of the ____________________ tissue in their walls.

Accepted Answer

The answer of Veins are able to constrict because of...

Question 2

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

Accepted Answer

A) The foramen ovale permits fetal blood to flow from the right ventricle to the left ventricle. 
B) The ductus arteriosus permits fetal blood to flow from the pulmonary artery to the aorta. 
C) Gases,nutrients,and waste products are exchanged between fetal blood and maternal blood in the placenta. 
D) The two umbilical veins take blood directly to the fetal heart. 
E) The two umbilical arteries take blood from the fetus to the placenta.
F)Shortly after birth,the ductus arteriosus constricts and the flap of the foramen ovale closes. 
A) The foramen ovale permits fetal blood to flow from the right ventricle to the left ventricle. 
B) The ductus arteriosus permits fetal blood to flow from the pulmonary artery to the aorta. 
C) Gases,nutrients,and waste products are exchanged between fetal blood and maternal blood in the placenta. 
D) The two umbilical veins take blood directly to the fetal heart. 
E) The two umbilical arteries take blood from the fetus to the placenta.
F)Shortly after birth,the ductus arteriosus constricts and the flap of the foramen ovale closes.

Question 3

In the fetus,the ductus venosus permits blood to flow:

Accepted Answer

A) from the umbilical vein to the inferior vena cava 
B) from the umbilical artery to the superior vena cava 
C) from the umbilical vein to the superior vena cava 
D) from the umbilical artery to the inferior vena cava 
A) from the umbilical vein to the inferior vena cava 
B) from the umbilical artery to the superior vena cava 
C) from the umbilical vein to the superior vena cava 
D) from the umbilical artery to the inferior vena cava

Question 4

All of these arteries are branches of the thoracic aorta except the:

Accepted Answer

A) intercostal arteries 
B) hepatic artery 
C) esophageal arteries 
D) bronchial arteries 
A) intercostal arteries 
B) hepatic artery 
C) esophageal arteries 
D) bronchial arteries

Question 5

Two hormones that affect blood pressure because they affect the diameter of blood vessels are ____________________ and ____________________.

Accepted Answer

epinephrine,norepine

Question 6

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

Accepted Answer

The answer of When blood flow through the kidneys decreases,the...

Question 7

In fetal circulation,the ductus arteriosus permits blood to flow from the ____________________ to the ____________________.

Accepted Answer

pulmonary

Question 8

Following a small loss of blood,the heart will:

Accepted Answer

A) decrease rate to conserve energy 
B) decrease rate to prevent greater loss 
C) increase rate to pump blood faster 
D) be unaffected 
A) decrease rate to conserve energy 
B) decrease rate to prevent greater loss 
C) increase rate to pump blood faster 
D) be unaffected

Question 9

In pulmonary circulation,blood is pumped to the lungs by the ____________________ and returns to the ____________________ of the heart.

Accepted Answer

right vent

Question 10

In fetal circulation,blood flows from the fetus to the placenta through the ____________________.

Accepted Answer

The answer of In fetal circulation,blood flows from the fetus...

Question 11

Velocity of blood flow is inversely related to the:

Accepted Answer

A) need for oxygen in tissues 
B) length of the part of the vascular system 
C) need for nutrients in tissues 
D) cross-sectional area of the part of the vascular system 
A) need for oxygen in tissues 
B) length of the part of the vascular system 
C) need for nutrients in tissues 
D) cross-sectional area of the part of the vascular system

Question 12

Which of these hormones does NOT have an effect on blood pressure?

Accepted Answer

A) ADH 
B) parathyroid hormone (PTH) 
C) epinephrine 
D) aldosterone 
A) ADH 
B) parathyroid hormone (PTH) 
C) epinephrine 
D) aldosterone

Question 13

In fetal circulation,blood flows from the placenta to the fetus through the ____________________.

Accepted Answer

The answer of In fetal circulation,blood flows from the placenta...

Question 14

The hormone that lowers blood pressure by increasing the excretion of sodium and water by the kidneys is ____________________.

Accepted Answer

ANP atrial

Question 15

One purpose of hepatic portal circulation is to enable the liver to receive alcohol absorbed by the stomach and ____________________ it before blood reaches the ____________________.

Accepted Answer

The answer of One purpose of hepatic portal circulation is...

Question 16

In fetal circulation,blood in the umbilical ____________________ has a high level of oxygen,and blood in the umbilical ____________________ has a high level of carbon dioxide.

Accepted Answer

The answer of In fetal circulation,blood in the umbilical ____________________...

Question 17

In pulmonary circulation,blood is pumped to the lungs by the ____________________.

Accepted Answer

The answer of In pulmonary circulation,blood is pumped to the...

Question 18

When vasoconstriction is needed to raise BP,the arteries receive more ____________________ impulses.

Accepted Answer

The answer of When vasoconstriction is needed to raise BP,the...

Question 19

The respiratory pump is an important mechanism for venous return for the:

Accepted Answer

A) jugular veins 
B) veins of the arms 
C) veins of the legs 
D) veins in the thoracic cavity 
A) jugular veins 
B) veins of the arms 
C) veins of the legs 
D) veins in the thoracic cavity

Question 20

A blood pressure reading has:

Accepted Answer

A) the systolic value first 
B) the diastolic value first 
C) either the systolic or diastolic value first,whichever is higher 
D) None of these is always true. 
A) the systolic value first 
B) the diastolic value first 
C) either the systolic or diastolic value first,whichever is higher 
D) None of these is always true.

Exam 13: The Vascular System

Veins are able to constrict because of the ____________________ tissue in their walls.

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

In the fetus,the ductus venosus permits blood to flow:

All of these arteries are branches of the thoracic aorta except the:

Two hormones that affect blood pressure because they affect the diameter of blood vessels are ____________________ and ____________________.

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

In fetal circulation,the ductus arteriosus permits blood to flow from the ____________________ to the ____________________.

Following a small loss of blood,the heart will:

In pulmonary circulation,blood is pumped to the lungs by the ____________________ and returns to the ____________________ of the heart.

In fetal circulation,blood flows from the fetus to the placenta through the ____________________.

Velocity of blood flow is inversely related to the:

Which of these hormones does NOT have an effect on blood pressure?

In fetal circulation,blood flows from the placenta to the fetus through the ____________________.

The hormone that lowers blood pressure by increasing the excretion of sodium and water by the kidneys is ____________________.

One purpose of hepatic portal circulation is to enable the liver to receive alcohol absorbed by the stomach and ____________________ it before blood reaches the ____________________.

In fetal circulation,blood in the umbilical ____________________ has a high level of oxygen,and blood in the umbilical ____________________ has a high level of carbon dioxide.

In pulmonary circulation,blood is pumped to the lungs by the ____________________.

When vasoconstriction is needed to raise BP,the arteries receive more ____________________ impulses.

The respiratory pump is an important mechanism for venous return for the:

A blood pressure reading has:

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

Two hormones that affect blood pressure because they affect the diameter of blood vessels are and .

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

In fetal circulation,the ductus arteriosus permits blood to flow from the to the .

In pulmonary circulation,blood is pumped to the lungs by the and returns to the of the heart.

One purpose of hepatic portal circulation is to enable the liver to receive alcohol absorbed by the stomach and it before blood reaches the .

In fetal circulation,blood in the umbilical has a high level of oxygen,and blood in the umbilical has a high level of carbon dioxide.