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Task 5 Cardiovascular
SystemSport Btec Level 2.
P5 – Describe the structure and function of the cardiovascular system and how it is affected by exercise.
M4 – Explain the effects of exercise on the Cardiovascular system and how it is affected by exercise.
D3 – Analyse the effects of exercise on the Cardiovascular system.
Grading Criteria.
The Cardiovascular System is made up of three components:
1. Heart2. The Blood Vessels3. The Blood
This system is the body’s main delivery and transport system, where blood moves from the heart and delivers oxygen and nutrients to every part of the body. On return removes waste products.
Structure of the Cardiovascular System.
The Heart
Task: Find a picture of the Heart and label it correctly.
Superior vena cava
Right atrium
Pulmonary valve
Tricuspid valve
Inferior vena cava
Aorta
Pulmonary artery
Pulmonary vein
Left atrium
Bicuspid valve
Left ventricle
Aortic valve
Right ventricle Septum
Arteries
Veins
Capillaries
Blood Vessels
Lumen
Lumen
Muscle + elastic fibres
Non-elastic fibresNon-elastic fibres
Muscle + elastic fibres
Non-elastic fibres
Muscle + elastic fibres
Arteries carry blood away from the heart and have a thick, elastic, muscular wall.They stretch as blood is pumped in and the muscle wall contracts to force blood along.Veins have a relatively thinner and less muscular wall than arteries. The blood is under a lower pressure than in the arteries. They carry blood back to the heart.Capillary walls are one cell thick. Exchange of nutrients and respiratory gases occurs acrosstheir surface. This is called diffusion.
BloodName Picture Explain
Plasma
Platelets
Red Blood Cells
White Blood Cells
http://www.youtube.com/watch?v=LqhvmUEdOYY
let me know what you think of my rapping?? (You can join in if you want?)
Lesson 2 – Task 5 Continued
1. Blood leaves the right side of the heart via the pulmonary artery and goes to the lungs where it is oxygenated.
2. It then travels back to the
left side of the heart via the pulmonary vein.
Pulmonaryartery Pulmonary
vein
Body
Heart
Lungs
Blood Flow around the Body – Pulmonary Circulation.
3. The left side of the heart then pumps
the oxygenated blood around the rest of
the body for use, via the aorta.
4. Once the oxygen has been used, the blood becomes deoxygenated and returns to the right side of the heart via the vena cava.
Vena Cava
Aorta
Blood Flow around the Body - Systemic Circulation
Body
Heart
Lungs
Using the A3 worksheets provided you need to label and describe the pathway of blood.
1. Use arrows to show the direction of blood flow (Red for oxygenated blood and Blue for deoxygenated).
2. Describe the pathway of blood both in the Systemic Circulation and Pulmonary Circulation.
The Pulmonary and Systemic Circulation.
What are the Short & Long-term effects of
exercise on the Cardiovascular
system??
Research ready for next lesson.
Extension ActivityIf you have any outstanding work to complete then please continue with that, if not complete the extension task set below.
Short-Term:1. Heart Rate increases – this increases due to the
demand in our body for oxygen to our working muscles. Therefore we must increase our HR so that out muscles don’t become tired.
2. Stroke Volume – this is the amount of blood being pumped out of the heart during one beat. As our muscles demand more oxygen the amount of blood pumped out is increased.
3. Cardiac Output – the HR and SV increase meaning the Cardiac Output increases this is the amount of blood pumped from the left ventricle in 1minute.
Effects of Exercise
Long-Term:1. Recovery Time – as we train and exercise more
and more our heart becomes stronger and much more efficient. When we stop/finish exercising our heart rate gradually decreases, the fitter we are the quicker we will recover to our resting HR.
2. Heart Size – Increases as we train and exercise on a regular basis. If we train close to our Max HR, gradually our Heart will increase in size and strength. This increase will mean an improved Cardiac Output and Stroke Volume.
Effects of Exercise
