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The Circulatory System: Blood, Heart, and Immunity: Understanding Their Components and Functions in the Body

Last updated 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.

True

False

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.

True

False

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

False

False

False

False