Cardio And Respitory Systems

Question 1

Definition of the pathway of blood through the heart

Answer 1

Oxygenated blood is carried to heart from the lungs in the pulmonary veins. The ventricle pumps blood though the semilunar valve into the aorta and around the body.

Question 2

Define Redistribution of blood when exercising

Answer 2

During exercise the cardiovascular system redistributes the blood so that more of it goes to the working muscles and less the the other organs and non working muscles

Question 3

Define redistribution of blood when at rest

Answer 3

The blood travels through the body and to all organs and muscles

Question 4

Define Aerobic exercise

Answer 4

Endurance type exercises that increase a persons heart rate and breathing rate overtime

Question 5

Define anaerobic exercise

Answer 5

Exercises that involve short bursts of intense activity

Question 6

Gaseous exchange

Answer 6

This is the process by which oxygen and carbon dioxide move between the blood stream and lungs

Question 7

What is supplied to the blood and what is released by the blood in gaseous exchange

Answer 7

Oxygen if supplied to the blood and carbon dioxide is released

Question 8

What are Mechanics of breathing when inhaling

Answer 8

• The inter coastal muscles contract which expands ribcage
• the diaphragm contracts, pulling downwards to increase volume of the chest
• pressure inside the chest is lowered and air is sucked into the lungs

Question 9

What are the mechanics of breathing when breathing out

Answer 9

• Inter coastal muscles relax making the rib cage to drops inwards
• diaphragm relaxes moving back upwards, decreasing the volume
• pressure of air in the chest increases which forces air out