EXSC 224 Exam 3 Questions With Correct
Answers
What tissue does blood arise from? - CORRECT ANSWER✔✔-connective tissue
| | | | | | | | | |
(mesenchyme)
Of the following blood vessel components which is the most critical in regulating
| | | | | | | | | | | | |
systemic blood pressure - CORRECT ANSWER✔✔-tunica media
| | | | | |
An increasing lumen diameter is termed __________, and occurs when smooth
| | | | | | | | | | |
muscle __________. - CORRECT ANSWER✔✔-vasodilation, relaxes
| | | | |
Which type of blood vessel has the largest amount of fibrous tissues - CORRECT
| | | | | | | | | | | | | |
ANSWER✔✔-muscular arteries |
Of the following vessel types which are responsible for the exchange of gases and
| | | | | | | | | | | | |
nutrients with tissues - CORRECT ANSWER✔✔-capillaries
| | | | | |
Of the following vessel types which conduct a blood towards the heart regardless
| | | | | | | | | | | | |
of oxygen content - CORRECT ANSWER✔✔-Veins
| | | | |
Of the following cardiovascular components which contains the majority of the
| | | | | | | | | | |
body's blood volume at any one time - CORRECT ANSWER✔✔-Systemic veins and
| | | | | | | | | | | |
venules
,Some of the least permeable capillaries are found in the ______, while some of
| | | | | | | | | | | | | |
the most permeable capillaries are found in the _____ - CORRECT ANSWER✔✔-
| | | | | | | | | | |
brain; bone marrow
| |
Predict the change in peripheral resistance as blood vessel diameter increases -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-Peripheral resistance decreases
| | |
Pulse pressure disappears by the time blood reaches capillary beds because -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-the muscular arterioles do not exhibit elastic rebound
| | | | | | | |
What effect does prolonged standing in one position have on blood flow? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-It causes blood pooling and a slowing of blood flow.
| | | | | | | | | |
What is the major factor controlling stroke volume during resting periods -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-Venous return to the heart
| | | | |
Predict what might happen to the peripheral resistance in arterioles supplying
| | | | | | | | | | |
skeletal muscle when pH levels drop - CORRECT ANSWER✔✔-Vasodilation in
| | | | | | | | | |
vessels supplying skeletal muscle
| | |
Baroreceptors detect changes in _____. - CORRECT ANSWER✔✔-stretch in
| | | | | | | | |
arterial walls |
When blood volume is increased, which of the following hormones would you
| | | | | | | | | | | |
expect to increase? - CORRECT ANSWER✔✔-atrial natriuretic peptide
| | | | | | |
,Why does blood velocity decrease as it flows into a capillary bed? - CORRECT
| | | | | | | | | | | | | |
ANSWER✔✔-The cross-sectional area of the capillary beds is approximately
| | | | | | | | |
2000x than that of the aorta.
| | | | |
A decrease in 02 level in skeletal muscle would initiate an autoregulatory
| | | | | | | | | | | |
mechanism that would stimulate _____ in the arterioles supplying the muscle. -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-vasodilation |
Why is vasodilation prominent in the skin when a person increases physical
| | | | | | | | | | | |
activity? - CORRECT ANSWER✔✔-Heat is dissipated across the skin from the
| | | | | | | | | | |
blood to help cool the body.
| | | | |
In what way is pulmonary circulation different from circulation in other body
| | | | | | | | | | | |
tissues? - CORRECT ANSWER✔✔-As opposed to other tissues, low O2 levels in
| | | | | | | | | | | |
the lungs induces vasoconstriction.
| | |
The primary mechanism driving filtration in capillary beds is _______. - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-hydrostatic pressure within the capillaries | | | |
Capillary colloid osmotic pressure created by ____ tends to ______. - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-nondiffusable plasma proteins; draw fluids into the capillary | | | | | | |
The left pulmonary artery carries ______ blood and ______ blood to/from the
| | | | | | | | | | | |
_______ - CORRECT ANSWER✔✔-deoxygenated, delivers, lung
| | | | |
, The superior vena cava receives systemic blood draining from all areas superior to
| | | | | | | | | | | |
the diaphragm except the - CORRECT ANSWER✔✔-heart wall
| | | | | | | |
WHich vessel receives blood drainage from the liver and returns in to the heart? -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-inferior vena cava
| | | |
The apex of the heart points - CORRECT ANSWER✔✔-inferiorly toward the left
| | | | | | | | | | | |
hip
What is the double walled Sac covering the heart - CORRECT ANSWER✔✔-
| | | | | | | | | | |
Pericardium
Of the following layers of the heart wall, which consumes the most energy -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-myocardium |
Which of the following structures is an exception to the general principle
| | | | | | | | | | | |
surrounding blood vessel oxygenation levels - CORRECT ANSWER✔✔-Both a and
| | | | | | | | | |
c (pulmonary artery, pulmonary veins)
| | | |
Which of the following statements is true?
| | | | | |
A. All arteries transport oxygen rich blood
| | | | | |
B. The right side of the heart is the systemic circuit pub
| | | | | | | | | | |
C. Equal volumes of blood are pumped to the pulmonary and systemic circuits at
| | | | | | | | | | | | | |
any moment |
Answers
What tissue does blood arise from? - CORRECT ANSWER✔✔-connective tissue
| | | | | | | | | |
(mesenchyme)
Of the following blood vessel components which is the most critical in regulating
| | | | | | | | | | | | |
systemic blood pressure - CORRECT ANSWER✔✔-tunica media
| | | | | |
An increasing lumen diameter is termed __________, and occurs when smooth
| | | | | | | | | | |
muscle __________. - CORRECT ANSWER✔✔-vasodilation, relaxes
| | | | |
Which type of blood vessel has the largest amount of fibrous tissues - CORRECT
| | | | | | | | | | | | | |
ANSWER✔✔-muscular arteries |
Of the following vessel types which are responsible for the exchange of gases and
| | | | | | | | | | | | |
nutrients with tissues - CORRECT ANSWER✔✔-capillaries
| | | | | |
Of the following vessel types which conduct a blood towards the heart regardless
| | | | | | | | | | | | |
of oxygen content - CORRECT ANSWER✔✔-Veins
| | | | |
Of the following cardiovascular components which contains the majority of the
| | | | | | | | | | |
body's blood volume at any one time - CORRECT ANSWER✔✔-Systemic veins and
| | | | | | | | | | | |
venules
,Some of the least permeable capillaries are found in the ______, while some of
| | | | | | | | | | | | | |
the most permeable capillaries are found in the _____ - CORRECT ANSWER✔✔-
| | | | | | | | | | |
brain; bone marrow
| |
Predict the change in peripheral resistance as blood vessel diameter increases -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-Peripheral resistance decreases
| | |
Pulse pressure disappears by the time blood reaches capillary beds because -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-the muscular arterioles do not exhibit elastic rebound
| | | | | | | |
What effect does prolonged standing in one position have on blood flow? -
| | | | | | | | | | | | |
CORRECT ANSWER✔✔-It causes blood pooling and a slowing of blood flow.
| | | | | | | | | |
What is the major factor controlling stroke volume during resting periods -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-Venous return to the heart
| | | | |
Predict what might happen to the peripheral resistance in arterioles supplying
| | | | | | | | | | |
skeletal muscle when pH levels drop - CORRECT ANSWER✔✔-Vasodilation in
| | | | | | | | | |
vessels supplying skeletal muscle
| | |
Baroreceptors detect changes in _____. - CORRECT ANSWER✔✔-stretch in
| | | | | | | | |
arterial walls |
When blood volume is increased, which of the following hormones would you
| | | | | | | | | | | |
expect to increase? - CORRECT ANSWER✔✔-atrial natriuretic peptide
| | | | | | |
,Why does blood velocity decrease as it flows into a capillary bed? - CORRECT
| | | | | | | | | | | | | |
ANSWER✔✔-The cross-sectional area of the capillary beds is approximately
| | | | | | | | |
2000x than that of the aorta.
| | | | |
A decrease in 02 level in skeletal muscle would initiate an autoregulatory
| | | | | | | | | | | |
mechanism that would stimulate _____ in the arterioles supplying the muscle. -
| | | | | | | | | | | |
CORRECT ANSWER✔✔-vasodilation |
Why is vasodilation prominent in the skin when a person increases physical
| | | | | | | | | | | |
activity? - CORRECT ANSWER✔✔-Heat is dissipated across the skin from the
| | | | | | | | | | |
blood to help cool the body.
| | | | |
In what way is pulmonary circulation different from circulation in other body
| | | | | | | | | | | |
tissues? - CORRECT ANSWER✔✔-As opposed to other tissues, low O2 levels in
| | | | | | | | | | | |
the lungs induces vasoconstriction.
| | |
The primary mechanism driving filtration in capillary beds is _______. - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-hydrostatic pressure within the capillaries | | | |
Capillary colloid osmotic pressure created by ____ tends to ______. - CORRECT
| | | | | | | | | | | |
ANSWER✔✔-nondiffusable plasma proteins; draw fluids into the capillary | | | | | | |
The left pulmonary artery carries ______ blood and ______ blood to/from the
| | | | | | | | | | | |
_______ - CORRECT ANSWER✔✔-deoxygenated, delivers, lung
| | | | |
, The superior vena cava receives systemic blood draining from all areas superior to
| | | | | | | | | | | |
the diaphragm except the - CORRECT ANSWER✔✔-heart wall
| | | | | | | |
WHich vessel receives blood drainage from the liver and returns in to the heart? -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-inferior vena cava
| | | |
The apex of the heart points - CORRECT ANSWER✔✔-inferiorly toward the left
| | | | | | | | | | | |
hip
What is the double walled Sac covering the heart - CORRECT ANSWER✔✔-
| | | | | | | | | | |
Pericardium
Of the following layers of the heart wall, which consumes the most energy -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-myocardium |
Which of the following structures is an exception to the general principle
| | | | | | | | | | | |
surrounding blood vessel oxygenation levels - CORRECT ANSWER✔✔-Both a and
| | | | | | | | | |
c (pulmonary artery, pulmonary veins)
| | | |
Which of the following statements is true?
| | | | | |
A. All arteries transport oxygen rich blood
| | | | | |
B. The right side of the heart is the systemic circuit pub
| | | | | | | | | | |
C. Equal volumes of blood are pumped to the pulmonary and systemic circuits at
| | | | | | | | | | | | | |
any moment |
