Question 1

Differences in blood flow to an organ are related to the resistance to flow offered by the arterioles that supply that organ.

Accepted Answer

A) True 
 B)False

Question 2

How does the vasomotor centre respond to rising H⁺/CO₂

Accepted Answer

A) by vasodilating arteries 
B) by vasoconstricting arteries 
C) by increasing respiratory rate 
D) by inhibiting the cardioinhibitory centre 
A) by vasodilating arteries 
B) by vasoconstricting arteries 
C) by increasing respiratory rate 
D) by inhibiting the cardioinhibitory centre

Question 3

Which of the following happens when blood pressure becomes elevated to above normal

Accepted Answer

A) The carotid sinus and aortic arch baroreceptors decrease their rate of firing. 
B) The cardiovascular control centre decreases sympathetic and increases parasympathetic activity to the heart and blood vessels. 
C) Arteriolar vasoconstriction occurs as a compensatory response. 
D) It causes salt retention to occur in the kidneys. 
A) The carotid sinus and aortic arch baroreceptors decrease their rate of firing. 
B) The cardiovascular control centre decreases sympathetic and increases parasympathetic activity to the heart and blood vessels. 
C) Arteriolar vasoconstriction occurs as a compensatory response. 
D) It causes salt retention to occur in the kidneys.

Question 4

Local control mechanisms can override sympathetic control of changes in the size of arterioles.

Accepted Answer

A) True 
 B)False

Question 5

Blood flow is driven by ____________________.

Accepted Answer

mean arter

Question 6

Match the effects, labelled a. through e., that the changes in question would have on bulk flow. (Options may be used more than once or not at all.)
-reduced synthesis of plasma proteins due to liver disease

Accepted Answer

A) The change would increase ultrafiltration and decrease reabsorption. 
B) The change would decrease ultrafiltration and increase reabsorption. 
C) The change would increase both ultrafiltration and reabsorption. 
D) The change would decrease both ultrafiltration and reabsorption. 
E) The change would not alter ultrafiltration and reabsorption. 
A) The change would increase ultrafiltration and decrease reabsorption. 
B) The change would decrease ultrafiltration and increase reabsorption. 
C) The change would increase both ultrafiltration and reabsorption. 
D) The change would decrease both ultrafiltration and reabsorption. 
E) The change would not alter ultrafiltration and reabsorption.

Question 7

Cardiovascular changes associated with exercise can be accounted for by local metabolic influences on skeletal muscle arterioles coupled with adjustments via the baroreceptor reflex.

Accepted Answer

A) True 
 B)False

Question 8

Because the capillaries have the smallest radii of any vascular segment, they are the major resistive vessels.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following represents postural (orthostatic) hypotension

Accepted Answer

A) a shock-like state that affects the elderly 
B) an abnormally low blood pressure in the supine position 
C) a permanent decrease in blood pressure in a long-bedridden patient 
D) an abnormal and transient drop in blood pressure on assumption of the upright position 
A) a shock-like state that affects the elderly 
B) an abnormally low blood pressure in the supine position 
C) a permanent decrease in blood pressure in a long-bedridden patient 
D) an abnormal and transient drop in blood pressure on assumption of the upright position

Question 10

Which of the following is NOT a short-term adjustment for blood pressure

Accepted Answer

A) baroreceptor reflex 
B) change in cardiac output 
C) renal activity 
D) hormone 
A) baroreceptor reflex 
B) change in cardiac output 
C) renal activity 
D) hormone

Question 11

The colloidal osmotic pressure in the blood plasma draws fluid into the capillary.

Accepted Answer

A) True 
 B)False

Question 12

Heart and venous valves serve a similar function.What type of flow do they prevent

Accepted Answer

A) forward 
B) backward 
C) turbulent 
D) pulsatile 
A) forward 
B) backward 
C) turbulent 
D) pulsatile

Question 13

Match the terms, labelled a. through d., with the correct characteristics.
-local arteriolar mechanisms that are aimed at keeping tissue blood flow fairly constant in spite of rather wide deviations in mean arterial driving pressure

Accepted Answer

A) reactive hyperaemia 
B) active hyperaemia 
C) pressure autoregulation 
D) extrinsic control 
A) reactive hyperaemia 
B) active hyperaemia 
C) pressure autoregulation 
D) extrinsic control

Question 14

Which of these factors is NOT involved in promoting venous return to the heart

Accepted Answer

A) Parasympathetic stimulation decreases venous pressure. 
B) The skeletal muscle pump squeezes blood through the veins. 
C) The respiratory pump provides a pressure gradient between the lower and chest veins. 
D) There is vasodilation of veins. 
A) Parasympathetic stimulation decreases venous pressure. 
B) The skeletal muscle pump squeezes blood through the veins. 
C) The respiratory pump provides a pressure gradient between the lower and chest veins. 
D) There is vasodilation of veins.

Question 15

More blood is delivered to the tissues during ventricular systole than during ventricular diastole.

Accepted Answer

A) True 
 B)False

Question 16

The wall of an artery contains ____________________ and ____________________ connective tissue fibres.

Accepted Answer

-collagen;

Question 17

Which of these factors does NOT affect blood pressure positively

Accepted Answer

A) skeletal muscle activity 
B) aldosterone release 
C) renin release 
D) calcium reabsorption 
A) skeletal muscle activity 
B) aldosterone release 
C) renin release 
D) calcium reabsorption

Question 18

Velocity of blood flow is slowest in the veins because the blood must move uphill against gravity in these vessels.

Accepted Answer

A) True 
 B)False

Question 19

To which of these terms is vascular resistance related

Accepted Answer

A) venous system 
B) diameter of a blood vessel 
C) location of a blood vessel 
D) component of white blood cell count 
A) venous system 
B) diameter of a blood vessel 
C) location of a blood vessel 
D) component of white blood cell count

Question 20

Hyperaemia occurs in response to circulating epinephrine.

Accepted Answer

A) True 
 B)False

Differences in blood flow to an organ are related to the resistance to flow offered by the arterioles that supply that organ.

How does the vasomotor centre respond to rising H⁺/CO₂

Which of the following happens when blood pressure becomes elevated to above normal

Local control mechanisms can override sympathetic control of changes in the size of arterioles.

Blood flow is driven by ____________________.

Match the effects, labelled a. through e., that the changes in question would have on bulk flow. (Options may be used more than once or not at all.) -reduced synthesis of plasma proteins due to liver disease

Cardiovascular changes associated with exercise can be accounted for by local metabolic influences on skeletal muscle arterioles coupled with adjustments via the baroreceptor reflex.

Because the capillaries have the smallest radii of any vascular segment, they are the major resistive vessels.

Which of the following represents postural (orthostatic) hypotension

Which of the following is NOT a short-term adjustment for blood pressure

The colloidal osmotic pressure in the blood plasma draws fluid into the capillary.

Heart and venous valves serve a similar function.What type of flow do they prevent

Match the terms, labelled a. through d., with the correct characteristics. -local arteriolar mechanisms that are aimed at keeping tissue blood flow fairly constant in spite of rather wide deviations in mean arterial driving pressure

Which of these factors is NOT involved in promoting venous return to the heart

More blood is delivered to the tissues during ventricular systole than during ventricular diastole.

The wall of an artery contains and connective tissue fibres.

Which of these factors does NOT affect blood pressure positively

Velocity of blood flow is slowest in the veins because the blood must move uphill against gravity in these vessels.

To which of these terms is vascular resistance related

Hyperaemia occurs in response to circulating epinephrine.

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

Principles of Endocrinology: The Central Endocrine Glands

The Endocrine Glands

Muscle Physiology

Cardiac Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

The Reproductive System

Filters

Exam 9: Vascular Physiology

Differences in blood flow to an organ are related to the resistance to flow offered by the arterioles that supply that organ.

How does the vasomotor centre respond to rising H⁺/CO₂

Which of the following happens when blood pressure becomes elevated to above normal

Local control mechanisms can override sympathetic control of changes in the size of arterioles.

Blood flow is driven by ____________________.

Match the effects, labelled a. through e., that the changes in question would have on bulk flow. (Options may be used more than once or not at all.) -reduced synthesis of plasma proteins due to liver disease

Cardiovascular changes associated with exercise can be accounted for by local metabolic influences on skeletal muscle arterioles coupled with adjustments via the baroreceptor reflex.

Because the capillaries have the smallest radii of any vascular segment, they are the major resistive vessels.

Which of the following represents postural (orthostatic) hypotension

Which of the following is NOT a short-term adjustment for blood pressure

The colloidal osmotic pressure in the blood plasma draws fluid into the capillary.

Heart and venous valves serve a similar function.What type of flow do they prevent

Match the terms, labelled a. through d., with the correct characteristics. -local arteriolar mechanisms that are aimed at keeping tissue blood flow fairly constant in spite of rather wide deviations in mean arterial driving pressure

Which of these factors is NOT involved in promoting venous return to the heart

More blood is delivered to the tissues during ventricular systole than during ventricular diastole.

The wall of an artery contains ____________________ and ____________________ connective tissue fibres.

Which of these factors does NOT affect blood pressure positively

Velocity of blood flow is slowest in the veins because the blood must move uphill against gravity in these vessels.

To which of these terms is vascular resistance related

Hyperaemia occurs in response to circulating epinephrine.

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

Principles of Endocrinology: The Central Endocrine Glands

The Endocrine Glands

Muscle Physiology

Cardiac Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

The Reproductive System

Filters

The wall of an artery contains and connective tissue fibres.