Notesale: Turn your study into money

Document Preview

Extracts from the notes are below, to see the PDF you'll receive please use the links above

---

Heart

The cardiovascular system, also known as the circulatory system, is responsible for the
movement of blood, nutrients, gases, and waste products throughout the body
...
The system ensures that oxygen and nutrients are
delivered to the tissues and organs and that carbon dioxide and waste products are removed
...
It acts as a pump, propelling oxygenated blood to various tissues and organs
via the arteries and returning deoxygenated blood to the lungs for oxygenation via
the veins
...
The coordinated action of these chambers, along with the
assistance of valves, ensures unidirectional blood flow, maintaining cardiac output
and systemic circulation
...

It rests on the diaphragm and is positioned behind the sternum (breastbone)
...


Chambers
The heart consists of four chambers:
1
...

o Sends blood to the right ventricle
...
Right Ventricle:
o Function: Pumps deoxygenated blood to the lungs via the pulmonary artery
for oxygenation
...
Left Atrium:
o Function: Receives oxygenated blood from the lungs via the pulmonary
veins
...

4
...

o This chamber has the thickest walls to generate the high pressure needed to
circulate blood throughout the body
...
It carries oxygenated blood from the
left ventricle to the rest of the body
...


Veins:
o
o
o

Superior Vena Cava: Carries deoxygenated blood from the upper part of the
body (head, neck, and arms) to the right atrium
...

Pulmonary Veins: Carry oxygenated blood from the lungs to the left atrium
...
Arteries:
o Aorta: The largest artery in the body
...

o Pulmonary Artery: Carries deoxygenated blood from the right ventricle to
the lungs for oxygenation
...
Veins:
o Superior Vena Cava: Carries deoxygenated blood from the upper part of the
body (head, neck, and arms) to the right atrium
...

o Pulmonary Veins: Carry oxygenated blood from the lungs to the left atrium
...
Tricuspid Valve:
o Located between the right atrium and right ventricle
...

2
...

o Function: Prevents the backflow of blood from the pulmonary artery into the
right ventricle after contraction
...
Mitral (Bicuspid) Valve:
o Located between the left atrium and the left ventricle
...

4
...

o Function: Prevents the backflow of blood from the aorta into the left ventricle
after contraction

---