68W MODULE 5 EXAM QUESTIONS
AND ANSWERS LATEST UPDATE 2026
Shock is the circulatory system's failure to provide sufficient blood
and oxygen to all the body's tissues. Which of the answers is NOT a
major type of shock?
A) Hypovolemic
B) Hemorrhagic
C) Hypervolemic
D) Cardiogenic - CORRECT. answer : C
Explanation: A) INCORRECT.. Hypovolemic shock is one of the three
major types of shock and results from blood or fluid loss.
B) INCORRECT.. Hemorrhagic shock is one of the three major types
of shock and results from blood loss.
C) CORRECT.. Hypervolemic shock is not one of the three major
types of shock.
D) INCORRECT.. Cardiogenic shock is one of the three major types
of shock and is brought on by inadequate pumping action of the
heart.
Page Ref: 671-672
Objective: 25.1
Which of the following vessels has the thickest muscular walls that
allow constriction and dilation?
,68W MODULE 5 EXAM QUESTIONS
AND ANSWERS LATEST UPDATE 2026
A) Arteries
B) Capillaries
C) Veins
D) Lymphatic vessels - CORRECT. answer : A
Explanation: A) CORRECT.. Arteries have the thickest muscular walls
to allow for vasoconstriction and vasodilation.
B) INCORRECT.. Capillaries are thin walled vessels without muscles.
C) INCORRECT.. Veins have muscular walls, but are not as thick as
arteries.
D) INCORRECT.. The lymphatic vessels are transport vessels without
smooth muscle.
Page Ref: 655
Objective: 25.2
Which of the following types of vessels have valves to maintain
one-way blood flow?
A) Arteries
B) Capillaries
C) Veins
D) Arterioles - CORRECT. answer : C
,68W MODULE 5 EXAM QUESTIONS
AND ANSWERS LATEST UPDATE 2026
Explanation: A) INCORRECT.. Arteries do not have valves to maintain
one-way blood flow.
B) INCORRECT.. Capillaries do not have valves to maintain one-way
blood flow.
C) CORRECT.. Veins have valves in them to maintain the one-way
blood flow back towards the heart.
D) INCORRECT.. Arterioles do not have valves to maintain one-way
blood flow.
Page Ref: 655
Objective: 25.2
Which of the following BEST describes the function of blood?
A) It is a life-giving liquid that supports all the body's functions to
maintain hypoperfusion.
B) It clots, flows, transports, protects, and excretes on a daily basis.
C) It transports gases along with nutrients, aids in excretion, and
provides protection and regulation.
D) It flows from the heart with the vital gases and nutrients to
maintain lack of perfusion. - CORRECT. answer : C
, 68W MODULE 5 EXAM QUESTIONS
AND ANSWERS LATEST UPDATE 2026
Explanation: A) INCORRECT.. Hypoperfusion is the lack of adequate
perfusion, or the lack of perfusion in a body, and the blood does
not try to maintain this.
B) INCORRECT.. Blood is not intended to clot on a regular basis
during injury.
C) CORRECT.. Blood transports gases like oxygen along with
nutrients, aids in excretion of waste products (like CO2), and
provides protection and regulation.
D) INCORRECT.. Blood flows throughout the body and tries to
maintain perfusion, not lack of perfusion.
Page Ref: 656-657
Objective: 25.2
Which of the following is NOT part of the circulatory system?
A) Heart
B) Brain
C) Blood vessels
D) Blood - CORRECT. answer : B
Explanation: A) INCORRECT.. The heart is part of the circulatory
system.
AND ANSWERS LATEST UPDATE 2026
Shock is the circulatory system's failure to provide sufficient blood
and oxygen to all the body's tissues. Which of the answers is NOT a
major type of shock?
A) Hypovolemic
B) Hemorrhagic
C) Hypervolemic
D) Cardiogenic - CORRECT. answer : C
Explanation: A) INCORRECT.. Hypovolemic shock is one of the three
major types of shock and results from blood or fluid loss.
B) INCORRECT.. Hemorrhagic shock is one of the three major types
of shock and results from blood loss.
C) CORRECT.. Hypervolemic shock is not one of the three major
types of shock.
D) INCORRECT.. Cardiogenic shock is one of the three major types
of shock and is brought on by inadequate pumping action of the
heart.
Page Ref: 671-672
Objective: 25.1
Which of the following vessels has the thickest muscular walls that
allow constriction and dilation?
,68W MODULE 5 EXAM QUESTIONS
AND ANSWERS LATEST UPDATE 2026
A) Arteries
B) Capillaries
C) Veins
D) Lymphatic vessels - CORRECT. answer : A
Explanation: A) CORRECT.. Arteries have the thickest muscular walls
to allow for vasoconstriction and vasodilation.
B) INCORRECT.. Capillaries are thin walled vessels without muscles.
C) INCORRECT.. Veins have muscular walls, but are not as thick as
arteries.
D) INCORRECT.. The lymphatic vessels are transport vessels without
smooth muscle.
Page Ref: 655
Objective: 25.2
Which of the following types of vessels have valves to maintain
one-way blood flow?
A) Arteries
B) Capillaries
C) Veins
D) Arterioles - CORRECT. answer : C
,68W MODULE 5 EXAM QUESTIONS
AND ANSWERS LATEST UPDATE 2026
Explanation: A) INCORRECT.. Arteries do not have valves to maintain
one-way blood flow.
B) INCORRECT.. Capillaries do not have valves to maintain one-way
blood flow.
C) CORRECT.. Veins have valves in them to maintain the one-way
blood flow back towards the heart.
D) INCORRECT.. Arterioles do not have valves to maintain one-way
blood flow.
Page Ref: 655
Objective: 25.2
Which of the following BEST describes the function of blood?
A) It is a life-giving liquid that supports all the body's functions to
maintain hypoperfusion.
B) It clots, flows, transports, protects, and excretes on a daily basis.
C) It transports gases along with nutrients, aids in excretion, and
provides protection and regulation.
D) It flows from the heart with the vital gases and nutrients to
maintain lack of perfusion. - CORRECT. answer : C
, 68W MODULE 5 EXAM QUESTIONS
AND ANSWERS LATEST UPDATE 2026
Explanation: A) INCORRECT.. Hypoperfusion is the lack of adequate
perfusion, or the lack of perfusion in a body, and the blood does
not try to maintain this.
B) INCORRECT.. Blood is not intended to clot on a regular basis
during injury.
C) CORRECT.. Blood transports gases like oxygen along with
nutrients, aids in excretion of waste products (like CO2), and
provides protection and regulation.
D) INCORRECT.. Blood flows throughout the body and tries to
maintain perfusion, not lack of perfusion.
Page Ref: 656-657
Objective: 25.2
Which of the following is NOT part of the circulatory system?
A) Heart
B) Brain
C) Blood vessels
D) Blood - CORRECT. answer : B
Explanation: A) INCORRECT.. The heart is part of the circulatory
system.
