VNSA3 Heart lesson
Presentation
•
Science
•
11th Grade
•
Easy
+2
Standards-aligned
Matt Badham
Used 7+ times
FREE Resource
4 Slides • 9 Questions
1
A&P Recap - The Cardiovascular system
2
Can you label the anatomical features of the heart?
Remember that drawings of the heart are flipped on a horizontal axis - i.e. Right is left and left is right.
Atria are on top because A is pointing up ^ and Ventricles on the bottom because V is pointing down v
3
Hotspot
To demonstrate this, click on the right ventricle and the left atria
4
Hotspot
Now consider which chamber of the heart pumps the systemic blood flow. Pulmonary meaning to and from lungs, systemic meaning the rest of the body.
5
Labelling
Label valves and vessels
Aortic Valve
Pulmonary Valve
Caudal Vena Cava
Aorta
Pulmonary Artery
Pulmonary Veins
Mitral Valve
Cranial Vena Cava
Tricuspid Valve
6
Now consider the electrical activity of the heart.
Starting from the Sinoatrial Node in the wall of the right atrium (just like how the cycle of the heart starts at the right atrium) starts with the contraction of atria. Then to the AV node (between Atria and Ventricles).
This then travels via the bundle of his, to the Purkinje fibres in the walls of the ventricles causing them to contract.
7
Labelling
Label the conductive anatomy of the heart
Bundle of His
Atrioventricular (AV) Node
Purkinje fibres
Sinoatrial (SA) Node
8
The Avian Heart is very similar to the Mammalian heart. The reptilian heart is different in that it has 3 chambers. 2 Atria and 1 Ventricle. Just think of a love heart.
Reptile Heart
9
Multiple Choice
Which of the following is NOT a type of blood vessel?
Artery
Capillary
Vein
Ventricle
10
Multiple Choice
What is the function (job) of the platelets?
To form clots (i.e. scabs) when you have cuts and grazes.
To transport oxygen to the muscles
To carry dissolved sugars.
To produce antibodies
11
Multiple Choice
Which blood vessel has valves to prevent the back-flow of blood?
Veins
Arteries
Capillaries
12
Multiple Choice
Arteries have thick muscular walls?
true
false
13
Multiple Choice
The blood vessel that has the largest diameter is
vein
artery
capillary
A&P Recap - The Cardiovascular system
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