1
BIOS255: Week 1-2 Questions and
Answers (100% Correct Answers)
Already Graded A+
Which blood type is considered the universal donor?— Ans:
O-
© 2026 Assignment
Which of the following leukocytes are considered
agranulocytes? Select all that apply.— Ans: Monocytes and
Guru01 - Stuvia
Lymphocytes
Expert
Which plasma proteins play a role in transporting different
substances and secreting antibodies to combat pathogens?—
Ans: Globins
Which of the following leukocytes aggressively phagocytize
bacteria and release antimicrobial chemicals?— Ans:
Neutrophils
Which of the following proteins are involved in blood clotting?
Select all that apply.— Ans: Fibrinogen and Thrombin
Which of the following substances is not required for the
production of red blood cells?— Ans: Magnesium
During blood centrifugation, which component of blood settles
at the bottom of the tube?— Ans: Erythrocytes
Which organ secretes most of the hormone necessary for the
formation of new red blood cells (RBCs)?— Ans: Kidney
, 2
Which of the following structures are found in the ventricles
and pull on the chordae tendinea upon contraction, preventing
the AV valves from flipping?— Ans: Papillary Muscles
superior vena cava and inferior vena cava— Ans: De-
oxygenated blood returning to the heart from the systemic
circulation will empty into the right atrium via which blood
vessels?
Which of the following structures prevents the backflow of
blood from the aorta into the left ventricle?— Ans: Aortic
© 2026 Assignment
Valve
Guru01 - Stuvia
Which component of the cardiac conduction system is known
Expert
as the heart's natural pacemaker?— Ans: SA Node
Using the following volumes, calculate the client's cardiac
output.
Heart Rate: 70 bpm End diastolic volume: 120 ml End systolic
volume: 40 ml Systolic pressure: 124 mmHg Diastolic pressure:
84 mmHg— Ans: 5.6 L/min
Aortic Valve and Pulmonary Valve— Ans: Which valves are
open when the heart is in ventricular systole?
Which of the following volumes represents the maximum
amount of blood that the ventricles can hold?— Ans: End-
diastolic volume (EDV)
Which of the following layers consists of cardiac muscle that
produces the wringing motion during contraction?— Ans:
Myocardium
, 3
Pulmonary Veins— Ans: The ___________ carries oxygenated
blood from the lungs to the heart.
Erythrocytes— Ans: They are responsible for delivering
oxygen from the lungs to body tissues and unloading carbon
dioxide from tissues onto the lungs. Settle to the bottom of the
tube, below the buffy coat.
Leukocytes— Ans: They are responsible for the immunologic
protection of the body as they combat pathogens and foreign
substances and may play a role in coordinating the response to
© 2026 Assignment
tissue damage.
Guru01 - Stuvia
Thrombocytes— Ans: They are cell fragments that play a role
Expert
in blood clotting.
Osteocytes— Ans: They are bone cells that maintain bone
tissue.
Astrocytes— Ans: They are glial cells in the central nervous
system that perform metabolic and protective functions.
heart, blood vessels, and blood— Ans: The circulatory system
consists of what?
hematology— Ans: The study of blood is known as what?
Plasma— Ans: It is the matrix component of blood, and is a
clear, light-yellow fluid that makes up 55% of the blood
volume.
formed elements— Ans: The cellular components of blood
are referred to as what?
BIOS255: Week 1-2 Questions and
Answers (100% Correct Answers)
Already Graded A+
Which blood type is considered the universal donor?— Ans:
O-
© 2026 Assignment
Which of the following leukocytes are considered
agranulocytes? Select all that apply.— Ans: Monocytes and
Guru01 - Stuvia
Lymphocytes
Expert
Which plasma proteins play a role in transporting different
substances and secreting antibodies to combat pathogens?—
Ans: Globins
Which of the following leukocytes aggressively phagocytize
bacteria and release antimicrobial chemicals?— Ans:
Neutrophils
Which of the following proteins are involved in blood clotting?
Select all that apply.— Ans: Fibrinogen and Thrombin
Which of the following substances is not required for the
production of red blood cells?— Ans: Magnesium
During blood centrifugation, which component of blood settles
at the bottom of the tube?— Ans: Erythrocytes
Which organ secretes most of the hormone necessary for the
formation of new red blood cells (RBCs)?— Ans: Kidney
, 2
Which of the following structures are found in the ventricles
and pull on the chordae tendinea upon contraction, preventing
the AV valves from flipping?— Ans: Papillary Muscles
superior vena cava and inferior vena cava— Ans: De-
oxygenated blood returning to the heart from the systemic
circulation will empty into the right atrium via which blood
vessels?
Which of the following structures prevents the backflow of
blood from the aorta into the left ventricle?— Ans: Aortic
© 2026 Assignment
Valve
Guru01 - Stuvia
Which component of the cardiac conduction system is known
Expert
as the heart's natural pacemaker?— Ans: SA Node
Using the following volumes, calculate the client's cardiac
output.
Heart Rate: 70 bpm End diastolic volume: 120 ml End systolic
volume: 40 ml Systolic pressure: 124 mmHg Diastolic pressure:
84 mmHg— Ans: 5.6 L/min
Aortic Valve and Pulmonary Valve— Ans: Which valves are
open when the heart is in ventricular systole?
Which of the following volumes represents the maximum
amount of blood that the ventricles can hold?— Ans: End-
diastolic volume (EDV)
Which of the following layers consists of cardiac muscle that
produces the wringing motion during contraction?— Ans:
Myocardium
, 3
Pulmonary Veins— Ans: The ___________ carries oxygenated
blood from the lungs to the heart.
Erythrocytes— Ans: They are responsible for delivering
oxygen from the lungs to body tissues and unloading carbon
dioxide from tissues onto the lungs. Settle to the bottom of the
tube, below the buffy coat.
Leukocytes— Ans: They are responsible for the immunologic
protection of the body as they combat pathogens and foreign
substances and may play a role in coordinating the response to
© 2026 Assignment
tissue damage.
Guru01 - Stuvia
Thrombocytes— Ans: They are cell fragments that play a role
Expert
in blood clotting.
Osteocytes— Ans: They are bone cells that maintain bone
tissue.
Astrocytes— Ans: They are glial cells in the central nervous
system that perform metabolic and protective functions.
heart, blood vessels, and blood— Ans: The circulatory system
consists of what?
hematology— Ans: The study of blood is known as what?
Plasma— Ans: It is the matrix component of blood, and is a
clear, light-yellow fluid that makes up 55% of the blood
volume.
formed elements— Ans: The cellular components of blood
are referred to as what?
