Heart anatomy & physiology

Where is the heart located in the human body?

• In the center of the chest, slightly to the left

• In the lower abdomen

• In the head

• In the left arm

What are the three main components of the cardiovascular system?

• Heart, lungs, brain

• Heart, stomach, kidneys

• Heart, blood vessels, blood

• Heart, nerves, muscles

What does the term "cardio" refer to in the context of the cardiovascular system?

• Lungs

• Heart

• Brain

• Muscles

What does the term "vascular" refer to in the context of the cardiovascular system?

• Nerves

• Muscles

• Blood vessels

• Bones

Which of the following is NOT a function of the cardiovascular system?

• Transports oxygen & other nutrients

• Regulates body temperature

• Synthesizes proteins

• Removes carbon dioxide & other waste products

What is the function of vasodilation in the cardiovascular system?

• It decreases the diameter of blood vessels, reducing blood flow.

• It expands the diameter of blood vessels, increasing blood flow.

• It prevents the exchange of gases in the blood vessels.

• It increases the viscosity of blood within the vessels.

Tags

NGSS.HS-LS1-3

What effect does vasoconstriction have on the body temperature?

• It cools the body down by increasing blood flow.

• It has no effect on body temperature.

• It warms the body up by decreasing blood flow.

• It warms the body up by increasing blood flow.

Tags

NGSS.HS-LS1-3

What happens to the blood vessels in the cardiovascular system when exposed to cold temperatures?

• Vasodilation

• No change

• Vasoconstriction

• They expand and contract alternately

Tags

NGSS.HS-LS1-3

How many chambers are there in the heart?

• 2

• 4

• 6

• 8

What are the top two chambers of the heart called?

• Ventricles

• Atria

• Valves

• Arteries