CHAMBERLAIN BIO 255 A&P Week 1
EDAPTS WITH 100% CORRECT
ANSWERS
In
(hematopoiesis).
The
On
• Identify the different components of blood, including plasma, red blood
cells, white blood cells, and platelets.
• Describe the various functions of blood, such as transportation of nutrients
and oxygen, removal of waste products, regulation of body temperature,
and protection against pathogens.
• Explain the structure and function of the circulatory system.
• Define hematopoiesis and describe the process of blood cell production.
• Utilize knowledge of blood functions to understand clinical conditions such
as liver failure, hypoalbuminemia, and severe burns,
Which of the following blood cells are responsible for carrying oxygen to body
tissues?
e Erythrocytes
O Astrocytes
O Leukocytes
O Thrombocytes
O Osteocytes
Which of the following is not a function
of blood? o Helps stabilize the pH of
extracellular fluids
,CHAMBERLAIN BIO 255 A&P Week 1
EDAPTS WITH 100% CORRECT
ANSWERS
O Participates in the initiation of blood clotting
e Produces hormones
O Transports a variety of nutrients
.Rh0\Minr-1 r:nrrørt anew.ar
Which is not a component of the circulatory system?
Lungs
O Heart
O Blood
O Blood vessels
lHønt n u/ O.nrrøotl
The cardiovascular system consists of only the heart and blood vessels. When we
also include blood, this is known as the circulatory system. The study of blood is
known as hematology.
The fundamental objective of the
circulatory system is to transport
substances from one place in the body
to another using blood as the liquid
medium. Key functions of the
circulatory system include:
• Transportation: Blood carries
oxygen, carbon dioxide, nutrients
(from the digestive tract), hormones, heat, and metabolic wastes.
• Regulation: Components of this system regulate homeostasis of all body
fluids (managing the volume and distribution), maintain the pH of
extracellular fluids, and help regulate body temperature and metabolic
heat.
,CHAMBERLAIN BIO 255 A&P Week 1
EDAPTS WITH 100% CORRECT
ANSWERS
• Protection: The circulatory system plays several roles in inflammation to
limit the spread of infection, contains cells and proteins that destroy
pathogens or remove tissue debris, and initiates blood clotting to
minimize blood loss and maintain blood vessel structure.
Recall that blood is a liquid connective tissue. Like all other connective
tissues, it consists of an extracellular matrix and cells:
The matrix component of blood is known as plasma. Plasma is a clear, light-
yellow fluid that makes up 55% of the blood volume.
The cellular components of blood are referred to as formed elements,
constituting 45% of the blood volume. They consist of red blood cells
(erythrocytes or RBCs), white blood cells (leukocytes or WBCs), and cell
fragments called platelets (thrombocytes). Formed elements are suspended in
the blood plasma and are so named due to their definitive membranous
structure, observable under a microscope.
Think of plasma as the liquid portion of blood
and formed elements as the solid. These can be
separated through a process called blood
Platelets
cells
COM
POSITION fractionation. A blood sample is collected in a
tube, which is then placed in OF BLOOD a centrifuge
machine to separate its components based on density.
Heavier components settle at the bottom of the tube,
while lighter components remain on top.
Upon centrifugation, blood components settle in a particular order from
top to bottom. Review the tabs to learn more about each of these
components.
, CHAMBERLAIN BIO 255 A&P Week 1
EDAPTS WITH 100% CORRECT
ANSWERS
v Plasma
Plasma rests on top as the lightest component, comprising about
47-63% of the total blood volume. Blood serum essentially consists
of plasma with clotting proteins removed after undergoing
centrifugation again.
v Buffy Coat (WBCs and platelets)
Platelets and WBCs are lighter than RBCs but heavier than plasma,
so they form a narrow cream-colored zone in the middle, known as
the buffy coat. This constitutes approximately 1% of the blood
volume.
v Erythrocytes (RBCs)
RBCs settle at the bottom of the tube as they are the densest,
constituting 37-52% of the total volume. This value is known as the
hematocrit or packed cell volume.
What is the term for the value representing the percentage of red blood cells
(RBCs) in the total blood volume?
Platelet count
e Hematocrit
Buffy coat index
Plasma volume
EDAPTS WITH 100% CORRECT
ANSWERS
In
(hematopoiesis).
The
On
• Identify the different components of blood, including plasma, red blood
cells, white blood cells, and platelets.
• Describe the various functions of blood, such as transportation of nutrients
and oxygen, removal of waste products, regulation of body temperature,
and protection against pathogens.
• Explain the structure and function of the circulatory system.
• Define hematopoiesis and describe the process of blood cell production.
• Utilize knowledge of blood functions to understand clinical conditions such
as liver failure, hypoalbuminemia, and severe burns,
Which of the following blood cells are responsible for carrying oxygen to body
tissues?
e Erythrocytes
O Astrocytes
O Leukocytes
O Thrombocytes
O Osteocytes
Which of the following is not a function
of blood? o Helps stabilize the pH of
extracellular fluids
,CHAMBERLAIN BIO 255 A&P Week 1
EDAPTS WITH 100% CORRECT
ANSWERS
O Participates in the initiation of blood clotting
e Produces hormones
O Transports a variety of nutrients
.Rh0\Minr-1 r:nrrørt anew.ar
Which is not a component of the circulatory system?
Lungs
O Heart
O Blood
O Blood vessels
lHønt n u/ O.nrrøotl
The cardiovascular system consists of only the heart and blood vessels. When we
also include blood, this is known as the circulatory system. The study of blood is
known as hematology.
The fundamental objective of the
circulatory system is to transport
substances from one place in the body
to another using blood as the liquid
medium. Key functions of the
circulatory system include:
• Transportation: Blood carries
oxygen, carbon dioxide, nutrients
(from the digestive tract), hormones, heat, and metabolic wastes.
• Regulation: Components of this system regulate homeostasis of all body
fluids (managing the volume and distribution), maintain the pH of
extracellular fluids, and help regulate body temperature and metabolic
heat.
,CHAMBERLAIN BIO 255 A&P Week 1
EDAPTS WITH 100% CORRECT
ANSWERS
• Protection: The circulatory system plays several roles in inflammation to
limit the spread of infection, contains cells and proteins that destroy
pathogens or remove tissue debris, and initiates blood clotting to
minimize blood loss and maintain blood vessel structure.
Recall that blood is a liquid connective tissue. Like all other connective
tissues, it consists of an extracellular matrix and cells:
The matrix component of blood is known as plasma. Plasma is a clear, light-
yellow fluid that makes up 55% of the blood volume.
The cellular components of blood are referred to as formed elements,
constituting 45% of the blood volume. They consist of red blood cells
(erythrocytes or RBCs), white blood cells (leukocytes or WBCs), and cell
fragments called platelets (thrombocytes). Formed elements are suspended in
the blood plasma and are so named due to their definitive membranous
structure, observable under a microscope.
Think of plasma as the liquid portion of blood
and formed elements as the solid. These can be
separated through a process called blood
Platelets
cells
COM
POSITION fractionation. A blood sample is collected in a
tube, which is then placed in OF BLOOD a centrifuge
machine to separate its components based on density.
Heavier components settle at the bottom of the tube,
while lighter components remain on top.
Upon centrifugation, blood components settle in a particular order from
top to bottom. Review the tabs to learn more about each of these
components.
, CHAMBERLAIN BIO 255 A&P Week 1
EDAPTS WITH 100% CORRECT
ANSWERS
v Plasma
Plasma rests on top as the lightest component, comprising about
47-63% of the total blood volume. Blood serum essentially consists
of plasma with clotting proteins removed after undergoing
centrifugation again.
v Buffy Coat (WBCs and platelets)
Platelets and WBCs are lighter than RBCs but heavier than plasma,
so they form a narrow cream-colored zone in the middle, known as
the buffy coat. This constitutes approximately 1% of the blood
volume.
v Erythrocytes (RBCs)
RBCs settle at the bottom of the tube as they are the densest,
constituting 37-52% of the total volume. This value is known as the
hematocrit or packed cell volume.
What is the term for the value representing the percentage of red blood cells
(RBCs) in the total blood volume?
Platelet count
e Hematocrit
Buffy coat index
Plasma volume
