Blood Vessels and functions of the heart during exercise

Explain in full what happens to the cardiovascular and respiratory systems during exercise?

Heart rate increases to deliver more oxygen to the working muscles. Stroke volume increases per beat. Cardiac output increases as Heart Rate X Stroke Volume both rise. Blood vessels dilate for greater blood flow. Blood pressure goes up as the heart pumps harder. Breathing rate increases to take in more oxygen and remove more CO2.

What is the difference between Arteries and Veins?

Arteries carry blood away from the heart while veins carry blood toward the heart.

What happens to heart rate during exercise?

It increases, because the body needs more oxygen delivered to working muscles.

What happens to stroke volume during exercise?

It increases, heart pumps more blood per beat.

What happens to cardiac output during exercise?

Increases, heart rate and stroke volume go up.

What happens to blood vessels during exercise?

It dilates so more blood flows to working muscles.

What happens to blood pressure during exercise?

It rises to force and push more blood through vessels.

What are the three types of blood vessels?

Arteries, veins and capillaries.

What do Arteries do?

Carry blood away from the heart, have thick walls and high pressure.

What do Veins do?

Carry blood toward the heart, have thin walls, low pressure and contains valves.

What do Capillaries do?

Microscopic vessels where oxygen and nutrients exchange with body tissues.

Why do blood vessels dilate during exercise?

To increase blood flow to working muscles.

Why does breathing rate increase during exercise?

To take in more oxygen and remove carbon dioxide.