Soc 16

Question 1

What is the job of arteries?

Answer 1

Arteries take blood away from the heart.

Question 2

What is the job of veins?

Answer 2

Veins carry blood into the heart.

Question 4

What is the job of capillaries?

Answer 4

They transfer oxygenated blood (which carries oxygen and nutrients) to the muscles. The also carry deoxygenated blood into the veins, picking up wast products to dispose.

Question 5

What are the two phases associated with how the heart pumps blood?

Answer 5

The first phase - Systolic Phase
The second phase - Diastolic Phase

Question 6

What are the 4 main components of the blood?

Answer 6

Red blood cells, white blood cells, platelets and plasma.

Question 7

What is blood pressure?

Answer 7

Blood pressure is a measure of the force that your heart uses to pump the blood around your body.

Question 8

What is the importance of red blood cells?

Answer 8

-Red blood cells transport oxygen from the lungs to the body’s cells, and carbon dioxide from the cells to the lungs
-They contain haemoglobin, which stores oxygen and carbon dioxide
-This is important to a long distance runner as their working muscles require more oxygen when running.

Question 9

What is the importance of white blood cells?

Answer 9

-The blood also contains transparent cells called white blood cells
-They have an important function as the defence system of the body
-They produce antibodies to fight against infection and diseases
-If an athlete has a disease or infection they may not be able to
train/perform.

Question 10

What is the importance of platelets?

Answer 10

-Blood platelets are formed in the bone marrow.
-Tiny fragments that clump together to help blood clot and stop bleeding.
-Blood is the first line of defence in the repair of a wound.
-When a blood vessel is cut, platelets rush to the area and swell into irregular shapes, they become sticky and act as a plug.
-If a performer gets a skin abrasion/cut the blood platelets will clot to stop the bleeding.

Question 11

What is the importance of plasma?

Answer 11

-The main role of plasma is to take oxygen, nutrients, hormones, and proteins to the parts of the body that need it
-Cells also put their waste products into the plasma. The plasma then helps remove this waste from the body.