1 / 11

Walk In Question

Explore the circulatory system and learn about the different types of blood vessels. Discover how the heart and lungs work together to transport oxygen-rich blood throughout the body. Understand the importance of maintaining healthy blood pressure.

gholleran
Télécharger la présentation

Walk In Question

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Walk In Question What do you think a blood vessel is? Can you name any types of blood vessels? The 2nd quarter homework project due date is in 10 days.

  2. Circulatory System: Heart, Blood, Blood Vessels

  3. Heart and Lungs Work Together (Review) • The body takes in air through the lungs and delivers oxygen to the alveoli. • The smallest blood vessels, called capillaries, pick up oxygen. • They move the oxygen-rich blood through arteries to every cell in the body.

  4. Review cont. • The cells put carbon dioxide into the blood. • Oxygen-poor blood (that contains CO2) goes back to the heart. • The heart pumps the blood back to the lungs, which breathe out the CO2. • The lungs breathe in more air and oxygen, and the heart pumps it to the body parts again.

  5. Structures in the Circulatory System • Heart – pushes blood throughout the body. • Two pumps – one on right side, one on left side. • Left side – pumps oxygen-rich blood to entire body • Right side - pumps oxygen-poor (used) blood to the lungs to receive oxygen. • Has valves to open and close.

  6. Heart Pumping • Chambers - each side of heart divided into 2 parts – right and left atrium and ventricle. • All blood is red, but oxygen rich blood is a much brighter and lighter shade of red. (charts usually show oxygen-poor blood in blue) • Blood carries oxygen and nutrients to all cells in the body.

  7. Blood • Blood –a fluid that carries all materials and wastes, delivers oxygen and removes CO2.made up of plasma, redblood cells, white blood cells and platelets. • Blood carries oxygen and nutrients to cells of the body. • Plasma 60% of blood is plasma (and 92% of plasma is water!) – A fluid that contains proteins, glucose, hormones, gases and other substances dissolved in water. • White Blood cells – help body fight infection. • Red blood cells – more numerous, pick up oxygen in lungs and transport it throughout body. • Platelets – large, solid cell fragments, help form blood clots. Clotting keeps us from losing too much blood from a cut.

  8. Different Blood Types • Each red blood cell has special proteins on its surface. The group of surface proteins determines blood type. • There are 2 blood-type proteins – A & B. • A person with A proteins in blood – Type A • A person with B proteins in blood – Type B • Some people have both proteins – Type AB • Some people have neither proteins – Type O 4 Types of Blood – A, B, AB, O

  9. Blood Pressure • Blood Presssure – the force produced when the heart contracts travels through the body. • The pressure exerted by blood on the veins and arteries. • Must maintain healthy blood pressure to get blood to all parts of body. • Too low – some cells will not get oxygen and other materials. • Too high – force will weaken the vessels and require the heart to work harder to push the blood through.

  10. Blood Vessels • Blood vessels – tube-shaped structures that move blood all over the body. • Arteries – carry oxygenated blood away from heart to the rest of the body – strong, thick walls • Veins – carry blood back to the heart, thinner; have a one-way valve. • Capillaries – narrow, smallest blood vessels, they connect arteries with veins.

  11. Difference between arteries and veins • Arteries go out AWAY from the heart, and veins go INto the heart.

More Related