The Cardiovascular System
Docsity.com
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Guidelines and tips
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community
Ask the community for help and clear up your study doubts
University Rankings
Discover the best universities in your country according to Docsity users
Free resources
Our save-the-student-ebooks!
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
Understanding the Cardiovascular System: Anatomy, Functions, and Common Issues, Slides of Cardiology
Explore the intricacies of the cardiovascular system, including the structure of the heart with its chambers, valves, and blood flow. Learn about common issues such as heart valve diseases, heart murmurs, and high blood pressure. Discover the role of pacemakers and their impact on patients' lives.
Typology: Slides
2011/2012
1 / 73
This page cannot be seen from the preview
Don't miss anything!
Related documents
Partial preview of the text
Download Understanding the Cardiovascular System: Anatomy, Functions, and Common Issues and more Slides Cardiology in PDF only on Docsity!
The Cardiovascular System
Atria
- heart is made up of four chambers
- two chambers on each side of the heart, one on the bottom and one on the top
- two chambers on top are called the atria (atrium).
- left atrium and a right atrium.
- atria fill with blood returning to the heart from the body and lungs.
The Heart
- The atria and ventricles work together.
- The atria fill with blood, and pump it into the ventricles.
- The ventricles then squeeze, pumping blood out of the heart.
- The atria refill and prepare for the next contraction while the ventricles are squeezing.
- blood relies on four special valves inside the heart
- valves lets something in and keep it there by closing
- Example: Think of walking through a door. The door shuts behind you and keeps you from going backward.
Valves
The Heart
Visuals
Pig Heart Enlarged Heart
Human Heart
Anatomy of a Heart
What it does
The heart has four chambers
The upper two are the right and left atria
The lower two are the right and left ventricles
Blood is pumped through the chambers, aided by four heart valves
The valves open and close to let the blood flow in only one direction
The four heart valves
The tricuspid valve
The pulmonary or pulmonic valve
The mitral valve
The aortic valve
Problems
Heart valves don’t always work as they should.
A person can be born with an abnormal heart valve.
A valve can also become damaged by:
Infections
Rheumatic fever
Changes in valve structure
Can you fix it?
To fix a defective heart valve you have to have surgery. A number of durable and highly efficient artificial valves have been developed from animal parts, plastic, and metal. There are also newer surgical techniques to reconstruct defective heart valves. Physician scientists at Columbia are currently investigating the potential of a non-invasive procedure for mitral valve repair procedure known as Evalve.
Effects of heart valve disease
Valves that don’t shut properly cause the regurgitation of blood back across the valve in the wrong direction.
Valves that won’t open properly is known as stenosis of the valve, which means that blood flow through the valve is limited.