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The Circulatory System: Blood, Heart, and Immunity: Understanding Their Components and Functions in the Body
Od Mr Pike
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Posljednje ažuriranje 3 months ago
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What is the primary function of red blood cells?
Transport carbon dioxide
Transport oxygen
Fight infections
Regulate temperature
Which component of blood is responsible for clotting?
Red blood cells
White blood cells
Platelets
Plasma
What role does plasma play in the blood?
Carries oxygen only
Transport nutrients and waste
Fights off disease
Regulates hormones only
How do red blood cells adapt to their function of oxygen transport?
They have a nucleus
They are shaped like discs
They can divide
They produce hormones
What do phagocytes do as part of the immune response?
Release hormones
Ingest pathogens
Transport oxygen
Produce antibodies
How do vaccines work in the immune system?
They produce new red blood cells
They help manufacture memory cells
They immediately kill pathogens
They reduce blood clotting
The heart pumps blood to the lungs for oxygenation before sending it to the rest of the body.
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What happens to heart rate during exercise?
It decreases
It stays the same
It increases
It stops temporarily
What is hemoglobin?
A type of plasma protein
A carbohydrate
A protein that binds oxygen
A type of white blood cell
The absence of a nucleus in red blood cells increases their oxygen-carrying capacity.
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Which of the following is NOT transported by plasma?
Digested food
Carbon dioxide
Bacteria
Urea
Select all the components of blood.
Red blood cells
Glucose
Plasma
White blood cells
Platelets
In what part of the body do white blood cells primarily function?
Heart
Liver
Lungs
Bloodstream
What is the main purpose of antibodies?
Clot blood
Transport oxygen
Fight off specific pathogens
Provide energy
Which part of the heart pumps oxygenated blood to the body?
Right atrium
Left atrium
Right ventricle
Left ventricle
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