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5.1 The structure
of the heart
Learning objectives
Student should understand the following:
 The gross structure of the human
heart and its associated blood
vessels in relation to function.
Simplified diagram of the heart
Right
side
Left
side
Label this diagram!
14
Aorta
2
Pulmonary vein
Vena cava
13
Pulmonary artery
12
Semi-lunar valve
11
1
Left atrium
3
Right atrium
4
10
Bicuspid
valve
Tricuspid valve
Left ventricle
5
9
Right ventricle
8
Papillary
muscle
7
Tendon
6
Septum
Double Circulatory System
The mammals have a double circulatory system.
Blood passes through the heart twice before being
pumped to the tissues of the body. The circulatory
system can be divided into two:
Pulmonary (including the heart and lungs).
Systemic (including the heart and the rest of body).
This means the heart has 2 sides!
Double
Circulatory
System
Task
 Using the text book relate the structure of the
following components of the heart to their function:
 Atrium
 Ventricle, left and right
 Bicuspid valve
 Tricuspid valve
 Semi-lunar valves
 Vena cava
 Pulmonary artery
 Pulmonary vein
 Aorta
The structure and function of parts of the heart
Learning objectives
Student should understand the following:
 The gross structure of the human
heart and its associated blood
vessels in relation to function.
Next lesson
 Heart dissection