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Unit 1: Cells, Organ Systems, and Ecosystems
1.4 Circulatory System in Humans
1.4.1 Components of Blood
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Red blood cells are disc-shaped cells containing
hemoglobin
What type of nutrients does plasma transport to body tissues?
Glucose and amino acids
White blood cells defend the body against infections and foreign
substances
Steps in carbon dioxide transport by plasma
1️⃣ Carbon dioxide is produced in body tissues
2️⃣ Carbon dioxide enters plasma
3️⃣ Plasma transports carbon dioxide to the lungs
4️⃣ Carbon dioxide is removed from the body
Which type of white blood cell mediates antibody production?
Lymphocytes
What is the liquid component of blood called?
Plasma
Which blood component aids in blood clotting?
Platelets
Match the blood cell type with its function:
Red blood cells ↔️ Oxygen transport
White blood cells ↔️ Immune defense
Platelets ↔️ Blood clotting
Steps in carbon dioxide transport by plasma:
1️⃣ Carbon dioxide produced in tissues
2️⃣ Transported by plasma
3️⃣ Carried to lungs
4️⃣ Carbon dioxide removed during exhalation
Match the type of white blood cell with its function:
Neutrophils ↔️ Phagocytize bacteria
Lymphocytes ↔️ Antibody production
Monocytes ↔️ Develop into macrophages
Eosinophils ↔️ Combat parasites
Platelets aid in blood clotting to prevent excessive bleeding.
True
What is the primary solvent in blood plasma?
Water
What are the four main components of blood?
Plasma, red blood cells, white blood cells, platelets
Plasma is the liquid component of blood that carries essential
substances
Red blood cells carry oxygen from the lungs to body tissues
True
What is the shape of red blood cells?
Disc-shaped
Neutrophils phagocytize bacteria and
fungi
What do eosinophils combat in the body?
Parasites
White blood cells defend the body against
infections
.
True
What is the primary function of red blood cells?
Carry oxygen
Which nutrients are transported by plasma to body tissues?
Glucose and amino acids
White blood cells identify and neutralize pathogens in the body.
True
What is the shape of platelets?
Irregular
What is the primary function of white blood cells?
Defend against infections
What waste product does plasma remove from cells for excretion?
Urea
What is the liquid component of blood called?
Plasma
Hemoglobin in
red blood cells
allows them to carry oxygen efficiently
True
Monocytes develop into macrophages that engulf pathogens and debris
True
Red blood cells are disc-shaped cells containing
hemoglobin
Plasma transports blood cells, hormones, nutrients, and
waste
Plasma transports blood cells like red blood cells, white blood cells, and
platelets
What protein in red blood cells allows them to carry oxygen?
Hemoglobin
Basophils release histamine and heparin during inflammatory
responses
Steps in blood clotting by platelets:
1️⃣ Blood vessel is damaged
2️⃣ Platelets are activated
3️⃣ Chemicals are released
4️⃣ Platelets stick together to form a plug
5️⃣ Bleeding stops
Water in blood plasma transports nutrients and
waste
Which gases in blood plasma facilitate respiration?
Oxygen and carbon dioxide
Plasma proteins maintain
osmotic balance
in blood.
True