Question 1

How are capillaries organized?

Accepted Answer

A)  Each arteriole narrows until it becomes a capillary,after which it increases in diameter to become a venule. 
B)  Capillaries are organized according to the needs of the tissue; some tissues have large capillary networks because they require rapid exchange of nutrients,chemicals,or gases,whereas other areas have no capillaries because arterioles supply sufficient amounts of blood. 
C)  Capillaries branch off of arterioles to form a bed,or network,of many capillaries. 
D)  Capillaries branch into sinusoids where the exchange of nutrients and gases takes place. 
A)  Each arteriole narrows until it becomes a capillary,after which it increases in diameter to become a venule. 
B)  Capillaries are organized according to the needs of the tissue; some tissues have large capillary networks because they require rapid exchange of nutrients,chemicals,or gases,whereas other areas have no capillaries because arterioles supply sufficient amounts of blood. 
C)  Capillaries branch off of arterioles to form a bed,or network,of many capillaries. 
D)  Capillaries branch into sinusoids where the exchange of nutrients and gases takes place. C

Question 2

The abdominal aorta divides into

Accepted Answer

A)  the right and left common mesenteric arteries. 
B)  the right and left common iliac arteries. 
C)  the right and left femoral arteries. 
D)  the right and left popliteal arteries. 
A)  the right and left common mesenteric arteries. 
B)  the right and left common iliac arteries. 
C)  the right and left femoral arteries. 
D)  the right and left popliteal arteries. B

Question 3

What happens as blood is transported from the aorta to the capillaries?

Accepted Answer

A)  Pressure increases 
B)  Flow increases 
C)  Resistance increases 
D)  Velocity increases 
A)  Pressure increases 
B)  Flow increases 
C)  Resistance increases 
D)  Velocity increases C

Question 4

Which are the three branches of the aortic arch?

Accepted Answer

A)  Descending aorta,thoracic aorta,and left common carotid 
B)  Brachiocephalic artery,thoracic aorta,and ascending aorta 
C)  Left common carotid,brachiocephalic,and left subclavian arteries 
D)  Left common carotid,right common carotid,and coronary arteries 
A)  Descending aorta,thoracic aorta,and left common carotid 
B)  Brachiocephalic artery,thoracic aorta,and ascending aorta 
C)  Left common carotid,brachiocephalic,and left subclavian arteries 
D)  Left common carotid,right common carotid,and coronary arteries

Question 5

How is peripheral resistance related to blood pressure?

Accepted Answer

A)  Blood pressure must rise until it overcomes peripheral resistance. 
B)  Peripheral resistance keeps the arteries healthy and toned,and therefore helps maintain normal blood pressure. 
C)  Increased peripheral resistance helps maintain normal pressures throughout the circulatory system. 
D)  As peripheral resistance increases,blood pressure decreases. 
A)  Blood pressure must rise until it overcomes peripheral resistance. 
B)  Peripheral resistance keeps the arteries healthy and toned,and therefore helps maintain normal blood pressure. 
C)  Increased peripheral resistance helps maintain normal pressures throughout the circulatory system. 
D)  As peripheral resistance increases,blood pressure decreases.

Question 6

____________________ is the actual volume of blood passing through a blood vessel,organ,or other part of the circulatory system in a given period.

Accepted Answer

The answer of ____________________ is the actual volume of blood...

Question 7

What is diffusion from the standpoint of capillary exchange?

Accepted Answer

A)  Movement of oxygen and carbon dioxide from an area of higher concentration to an area of lower concentration 
B)  Water moves through the capillary wall from an area of lower concentration to an area of higher concentration 
C)  Higher pressure within the capillary pushes plasma and dissolved nutrients through the capillary wall 
D)  Albumin and other proteins in blood pull tissue fluid and cellular waste products into the cell 
A)  Movement of oxygen and carbon dioxide from an area of higher concentration to an area of lower concentration 
B)  Water moves through the capillary wall from an area of lower concentration to an area of higher concentration 
C)  Higher pressure within the capillary pushes plasma and dissolved nutrients through the capillary wall 
D)  Albumin and other proteins in blood pull tissue fluid and cellular waste products into the cell

Question 8

____________________ carry blood away from the heart,and ____________________ return blood to the heart.

Accepted Answer

The answer of ____________________ carry blood away from the heart,and...

Question 9

Where is blood flow slowest,and what contributes to the diminished velocity?

Accepted Answer

A)  Flow is slowest in the capillaries because of their larger cross-sectional area and narrow diameter. 
B)  Large veins have the slowest blood flow because they receive blood from several different medium-sized veins and they have valves that interfere with blood flow. 
C)  Arteriole blood flow is slowest because they are farthest from the heart and are the narrowest arteries. 
D)  Distributing arteries of the brain have the slowest flow of blood because they have a large cross-sectional area and many branches. 
A)  Flow is slowest in the capillaries because of their larger cross-sectional area and narrow diameter. 
B)  Large veins have the slowest blood flow because they receive blood from several different medium-sized veins and they have valves that interfere with blood flow. 
C)  Arteriole blood flow is slowest because they are farthest from the heart and are the narrowest arteries. 
D)  Distributing arteries of the brain have the slowest flow of blood because they have a large cross-sectional area and many branches.

Question 10

Which blood vessels have the greatest ability to expand and recoil,and why is this important?

Accepted Answer

A)  Medium-sized veins,because it helps them carry varying amounts of blood 
B)  Conducting arteries,so they can manage the surge of blood with systole and help propel blood during diastole 
C)  Arterioles,because they must constrict or dilate to control blood pressure 
D)  Capillaries,because they must supply more blood during stress or exercise 
A)  Medium-sized veins,because it helps them carry varying amounts of blood 
B)  Conducting arteries,so they can manage the surge of blood with systole and help propel blood during diastole 
C)  Arterioles,because they must constrict or dilate to control blood pressure 
D)  Capillaries,because they must supply more blood during stress or exercise

Question 11

Which is the correct order of vessels in the venous system,beginning with capillaries?

Accepted Answer

A)  Large veins,medium-sized veins,venules 
B)  Venules,capacitance veins,muscular veins,large veins 
C)  Venules,medium-sized veins,large veins 
D)  Large veins,medium-sized veins,small veins,venules 
A)  Large veins,medium-sized veins,venules 
B)  Venules,capacitance veins,muscular veins,large veins 
C)  Venules,medium-sized veins,large veins 
D)  Large veins,medium-sized veins,small veins,venules

Question 12

What would occur in the capillary bed if osmotic pressure in the venule end was equal to osmotic pressure in the tissues?

Accepted Answer

A)  Oxygen would be replenished in the tissues. 
B)  Protein would escape from the blood into the surrounding tissue. 
C)  Waste products from the surrounding cells would enter the capillary. 
D)  Carbon dioxide and waste products would remain in the tissue fluid. 
A)  Oxygen would be replenished in the tissues. 
B)  Protein would escape from the blood into the surrounding tissue. 
C)  Waste products from the surrounding cells would enter the capillary. 
D)  Carbon dioxide and waste products would remain in the tissue fluid.

Question 13

Which process pushes plasma and dissolved nutrients through the arterial end of the capillary wall?

Accepted Answer

A)  Colloidal pressure 
B)  Diffusion 
C)  Osmosis 
D)  Filtration 
A)  Colloidal pressure 
B)  Diffusion 
C)  Osmosis 
D)  Filtration

Question 14

Which best explains how the vascular system maintains blood pressure?

Accepted Answer

A)  Arterioles dilate or constrict to provide the correct amount of resistance to blood flow. 
B)  Medium-sized veins constrict to help maintain blood pressure when blood pressure drops. 
C)  Distributing arteries carry blood evenly throughout the body to maintain a stable blood pressure. 
D)  Veins and arteries work together to maintain blood pressure at or near 110/70 mm Hg. 
A)  Arterioles dilate or constrict to provide the correct amount of resistance to blood flow. 
B)  Medium-sized veins constrict to help maintain blood pressure when blood pressure drops. 
C)  Distributing arteries carry blood evenly throughout the body to maintain a stable blood pressure. 
D)  Veins and arteries work together to maintain blood pressure at or near 110/70 mm Hg.

Question 15

The two arteries that supply blood to the brain are the ____________________ and ____________________ arteries.

Accepted Answer

The answer of The two arteries that supply blood to...

Question 16

What mechanisms assist venous return?

Accepted Answer

A)  One-way valves,increasing diameter of veins,peripheral resistance 
B)  Pressure changes during breathing,one-way valves,thickness of the tunica media in medium-sized veins 
C)  Skeletal muscle contractions,large-diameter lumen,thickness of the tunica media in medium-sized veins 
D)  One-way valves,skeletal muscle contractions,pressure changes during breathing 
A)  One-way valves,increasing diameter of veins,peripheral resistance 
B)  Pressure changes during breathing,one-way valves,thickness of the tunica media in medium-sized veins 
C)  Skeletal muscle contractions,large-diameter lumen,thickness of the tunica media in medium-sized veins 
D)  One-way valves,skeletal muscle contractions,pressure changes during breathing

Question 17

Which organs receive blood from the mesenteric arteries?

Accepted Answer

A)  Liver,spleen,stomach 
B)  Intestines 
C)  Kidneys and bladder 
D)  Lungs 
A)  Liver,spleen,stomach 
B)  Intestines 
C)  Kidneys and bladder 
D)  Lungs

Question 18

What is the function of the pulmonary circulation?

Accepted Answer

A)  To bring deoxygenated blood to the alveoli for gas exchange 
B)  To bring deoxygenated blood to the heart for circulation to the lungs 
C)  To meet the metabolic needs of the pulmonary tissue 
D)  To meet both the metabolic needs of the pulmonary tissue and bring blood to the alveoli 
A)  To bring deoxygenated blood to the alveoli for gas exchange 
B)  To bring deoxygenated blood to the heart for circulation to the lungs 
C)  To meet the metabolic needs of the pulmonary tissue 
D)  To meet both the metabolic needs of the pulmonary tissue and bring blood to the alveoli

Question 19

Which is the correct order of vessels in the arterial system,starting at the heart?

Accepted Answer

A)  Elastic arteries,distributing arteries,resistance vessels,arterioles 
B)  Conducting arteries,muscular arteries,elastic arteries,arterioles 
C)  Distributing arteries,conducting arteries,elastic arteries,arterioles 
D)  Conducting arteries,distributing arteries,arterioles,capillaries 
A)  Elastic arteries,distributing arteries,resistance vessels,arterioles 
B)  Conducting arteries,muscular arteries,elastic arteries,arterioles 
C)  Distributing arteries,conducting arteries,elastic arteries,arterioles 
D)  Conducting arteries,distributing arteries,arterioles,capillaries

Question 20

Which blood vessel(s)does blood enter after leaving the portal vein?

Accepted Answer

A)  Sinusoids 
B)  Hepatic veins 
C)  Inferior vena cava 
D)  Superior mesenteric vein 
A)  Sinusoids 
B)  Hepatic veins 
C)  Inferior vena cava 
D)  Superior mesenteric vein

Exam 15: Vascular System

How are capillaries organized?

The abdominal aorta divides into

What happens as blood is transported from the aorta to the capillaries?

Which are the three branches of the aortic arch?

How is peripheral resistance related to blood pressure?

____________________ is the actual volume of blood passing through a blood vessel,organ,or other part of the circulatory system in a given period.

What is diffusion from the standpoint of capillary exchange?

____________________ carry blood away from the heart,and ____________________ return blood to the heart.

Where is blood flow slowest,and what contributes to the diminished velocity?

Which blood vessels have the greatest ability to expand and recoil,and why is this important?

Which is the correct order of vessels in the venous system,beginning with capillaries?

What would occur in the capillary bed if osmotic pressure in the venule end was equal to osmotic pressure in the tissues?

Which process pushes plasma and dissolved nutrients through the arterial end of the capillary wall?

Which best explains how the vascular system maintains blood pressure?

The two arteries that supply blood to the brain are the ____________________ and ____________________ arteries.

What mechanisms assist venous return?

Which organs receive blood from the mesenteric arteries?

What is the function of the pulmonary circulation?

Which is the correct order of vessels in the arterial system,starting at the heart?

Which blood vessel(s)does blood enter after leaving the portal vein?

Orientation to the Human Body

Chemistry of Life

Cells

Tissues

Integumentary System

Bones Bone Tissue

Skeletal System

Joints

Muscular System

Nervous System

Sense Organs

Endocrine System

Blood

Heart

Lymphatic Immune Systems

Respiratory System

Urinary System

Fluid,electrolyte Acid-Base Balance

Digestive System

Nutrition Metabolism

Human Microbiome

Reproductive Systems

Pregnancy Human Development

Heredity

Filters

carry blood away from the heart,and return blood to the heart.

The two arteries that supply blood to the brain are the and arteries.