Circulation

Question 1

What is circulation known as and what does it include

Answer 1

Also called the cardiovascular system, cardio meaning heart and vascular meaning blood vessels and blood.

Transports- gasses, nutrients and waste
Regulates- internal temperature
Protects- against microbes and toxic substances

Question 2

What is included in the cardiovascular system

Answer 2

The heart and blood vessels

Question 3

What is included in the lymphatic system

Answer 3

Lymph vessels and nodes

• drains excess fluid that seeps out of the capillaries into the body tissues and returns it to the blood

Question 4

Cardiac output

Answer 4

• the amount of blood that flows from each side of the heart per minute, two factors affect this, the stroke volume and heart rate

Question 5

Stroke volume

Answer 5

Quantity of blood pumped with each beat of the heart, around 70 mL

Question 6

Heart rate

Answer 6

Number of times the heart beats per minute, the average being 72 beats per minute

Question 7

Cardiac output

Answer 7

This is stroke volume X heart rate.

• a person who exercises has a high cardiac output because the heart rate is higher