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Topic 8: Exchange and Transport in Animals
8.1 Circulatory System
8.1.3 Blood Components
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Blood circulates through the
circulatory system
What role do platelets play in blood?
Blood clotting
Plasma is the liquid part of
blood
that transports other blood components.
True
What is the alternative name for platelets?
Thrombocytes
Red blood cells lack a
nucleus
Why is the biconcave shape of red blood cells important?
Oxygen absorption
What is the primary role of white blood cells in the body?
Immune response
What does blood carry throughout the circulatory system?
Oxygen, nutrients, waste products
What is the primary function of white blood cells?
Fight infection and disease
What protein in red blood cells binds to oxygen?
Hemoglobin
Match the type of white blood cell with its function:
Lymphocytes ↔️ Produce antibodies
Neutrophils ↔️ Engulf bacteria
Monocytes ↔️ Develop into macrophages
What bone marrow cells form platelets?
Megakaryocytes
What substances does plasma carry to and from the body's cells?
Nutrients, waste products, hormones
White blood cells help the body fight
infection
and disease.
True
What is the role of blood in maintaining overall health?
Oxygen transport and clotting
What is the primary function of red blood cells?
Carry oxygen
Which protein in red blood cells binds to oxygen?
Hemoglobin
What type of white blood cell produces antibodies?
Lymphocytes
What percentage of blood volume does plasma comprise?
55%
What is the primary function of red blood cells?
Carry oxygen
The liquid part of blood is called
plasma
What is another name for red blood cells?
Erythrocytes
Red blood cells carry
oxygen
from the lungs to the body's tissues.
True
What protein in red blood cells binds to oxygen?
Hemoglobin
Hemoglobin contains iron atoms that bind to oxygen
molecules
Match the type of white blood cell with its function:
1️⃣ Lymphocytes
2️⃣ Produce antibodies to fight specific pathogens
3️⃣ Neutrophils
4️⃣ Engulf and destroy bacteria and fungi
5️⃣ Monocytes
6️⃣ Develop into macrophages that destroy pathogens
The main components of blood are red blood cells, white blood cells, platelets, and
plasma
Platelets help the blood
clot
Red blood cells have a biconcave shape to increase their
surface area
The diverse roles of white blood cells contrast with the oxygen transport function of red blood
cells
Platelets are small, irregularly shaped
cells
without a nucleus.
True
What is the primary function of platelets in blood?
Blood clotting
What is the definition of blood?
Body fluid in circulatory system
What is the shape of red blood cells that maximizes gas exchange?
Biconcave
What system are white blood cells part of?
Immune system
Where are platelets derived from?
Megakaryocytes
Plasma transports red blood cells, white blood cells, and
platelets
throughout the body.
True
What type of fluid is blood?
Body fluid
White blood cells help the body fight
infection
and disease.
True
Which blood component transports oxygen from the lungs to the body's tissues?
Red blood cells
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