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The Heart and The Pathway of Blood

Learning Objective and

Learning Outcomes:

To develop our understanding of the heart and the pathway of blood through perserverance  5 - I can list the key facts of the heart and identify the two separate pumps involved (Oxygenated and Deoxygenated).  6 - 7 - All of the above, and I can remember most of the structure and vessels associated with the heart. I am starting to understand the pathway of blood through the heart.  8 - 9 - As above-I can remember all of the structure and vessels associated with the heart. I can explain the role valves have in the pathway of blood and can explain this process.

Green Pens:

The heart is about the size of a closed fist The heart is part of the cardiovascular system Consists of 4 chambers is made up of cardiac muscle-The top half two being the atria and the bottom half two being the ventricles Main function of the heart is to pump blood around the body

The Structure of the Heart

 It is divided into 2 halves.  The right hand side and the left hand side  This sides are separated by a muscular wall. Left Hand Side=Pumps oxygenated blood around the body What is Oxygenatd Blood? Oxygenated blood=Blood rich in oxygen that is carried away from the heart to the muscles and organs that require it in order to contract Extension: What is the name of the muscular wall that divides the heart into 2 halves? Muscular Wall=Septum

 Using the key words below-Label your heart worksheet  If this is too difficult-Turn your planner to red to receive a help sheet Key Words: Right Atrium Left Atrium Pulmonary Artery Septum Pulmonary Vein Semi-lunar Valve Bicuspid Valve Semi-Lunar Valve Left Ventricle Right Ventricle Aorta Vena Cava Tricuspid Valve Vena Cava

Key Parts of the Heart:

 The atria (plural of atrium) are where the blood

collects when it enters the heart.

 The ventricles pump the blood out of the heart to

the lungs or around the body.

Valves

 Valves= Ensure that blood can only flow in one direction around the body as they work one way themselves.  There are four valves in the heart  Using your diagram of the heart-Can you list the 4 we have?

1. Tricuspid Valve
2. Bicuspid Valve
3. Aortic Valve
4. Pulmonary Valve
5. Seminlunar Valve Extension: What ways can you think of to make the above easy for you to remember?

Green Pens:

 Atrioventricular Valves : all valves between the …………….

and ……………………………………..

 Tricupspid valve: between ……………………… ventricle and

……………………………….. atrium

 Biscupid Valve : between ……………………. atrium and

…………………...... V.............................

 Aortic Valve: between right ventricle and pulmonary

 Pulmonary Valve: between …………………………………..

ventricle and …………………………………………artery.

 Semilunar Valves: collective term for aortic and

Pulmonary Valves

Atria Ventricles Right Right Left Left entricle Artery Right Pulmonary

4 Major Blood Vessels

1. Aorta - The largest artery in the body carrying

oxygenated blood away from the left ventricle of

the body

2. Pulmonary Artery- Carries deoxygenated blood

away from the right ventricle to the lungs

3. Vena Cava- The largest vein in the body carrying

deoxygenated blood from the muscles and organs

to the right atrium

4. Pulmonary Vein- Returns oxygenated blood from

the lungs to the heart

 The pathway of blood through the left hand side of the heart  Oxygenated blood returns to the heart from the lungs through the pulmonary veins and enters the left atrium of the heart. The blood then passes through bicuspid valve and into the left ventricle. The semilunar valve prevents blood from re-entering the heart whereby then the oxygenated blood is pumped into the aorta and round the body. 1)Pulmonary Vein 2)Left Atrium (^) 3) Bicuspid Valve 4)Left Ventricle 5)Semilunar Valve 6)Aorta

7. Body

The Pathway Of Blood Through The Left

Side of the Heart:

Learning Objective and

Learning Outcomes:

 To develop our understanding of the structure and function of the cardiovascular system through perserverance  5 - I can name the 2 types of systems that make up the double circulatory system. I can name the major organs and vessels involved.  6 - 7 - All of the above, and I can remember most of the pathway of blood through the double circulatory system, the role of the different vessels and define Heart Rate, Stroke volume and Cardiac Output  8 - 9 - As above-I remember the full pathway of blood through the double circulatory system. I understand the relationship between Heart rate, stroke volume and cardiac output and how it can be affected during sport.

Stroke volume

 The volume of blood pumped out by the heart by each ventricle during one contraction (one beat)

Cardiac output

 Blood ejected from the left ventricle in one minute.  Cardiac output (q)= Stroke Volume (SV) x Heart Rate (HR)  Measurement is litres/min