Quarter 1: Lesson 2 Flashcards
(46 cards)
It is the life support structure that nourishes your cells with food and oxygen. It also carries away the waste products.
Circulatory System
Components of Circulatory System
Blood, Blood Vessels, Heart
A fluid tissue consisting of plasma and cells that circulates in the blood vessels. Our blood consists of the liquid part called plasma and the solid components called blood cells.
Blood
a liquid that carries the cells and the platelets which help blood clot. It comprises 50 to 60% of our blood.
Plasma
The clear yellowish liquid part
Serum
are very small biconcave discs that are round and thinned out in the center. It can change shape to an amazing extent, without breaking, as it squeezes single file through the capillaries.
Red Blood Cells
Red Blood Cells are also called
erythrocytes
a molecule specially designed to hold oxygen and carry it to cells that need it. It also gives RBC a red color.
hemoglobin
Main function of Red Blood Cells
To deliver oxygen to our body tissues and cells
To pick up the unnecessary wastes and carbon dioxide from our cells.
Clumping of blood cells caused by antigen-antibody interaction. If transfused blood does not match, it will agglutinate. Agglutinated blood cannot pass through capillaries = blood clots = trouble
Agglutination
also known as leucocytes. They circulate in the bloodstream and have nothing to do with delivery of food and oxygen. Their job is to protect our body against foreign- invading substances, particularly bacteria. Leukocytes are true cells having their own nuclei. Sometimes the nuclei are big; sometimes there are more than one.
White Blood Cells
engulf foreign substances
Phagocytes
produce antibodies to attack the body enemy ( Bacteria).
Lymphocytes
considered as the smallest blood cells. It can produce tiny fibrinogen fibers to form a net. This net traps other blood cells to form a blood clot.
Platelets
are also known as thrombocytes
Platelets
begin when a blood vessel is injured. Blood comes into contact with the tissue around the injury. Several substances, such as calcium and protein combine or unite to trap the red blood cells and white blood cells to form a mesh. This clot then plugs the leak caused by the wounds. It also becomes the foundation on which the new tissue will be built to heal your wounds.
Blood Clotting
Blood Types
A ( +, - )
B ( +, - )
AB ( +, - )
O ( +, - )
The “positive” (+) or “negative” (-) on a blood type refers to the Rh type. Rh is another protein on red blood cells that researchers discovered decades ago. If you are Rh positive, then you have the Rh protein on your red blood cells.
Rh type
carry the blood throughout the body
Blood vessels
carry oxygenated blood away from the heart to the cells, tissues, and organs of the body. The arteries nearest to your heart are large. As they get farther from the heart, they rebranch and rebranch like a tree. They divide and split into smaller and more numerous arterioles. They carry blood under great pressure away from the heart. They are thicker and have more muscular walls.
Arteries
carry deoxygenated blood to the heart. The large and thicker walled blood vessels are called veins. Blood in our veins appears to be darker because it has lost oxygen. Unlike in our arteries, blood moves slower in our veins because your blood is under little pressure
Veins
he smallest blood vessels in the body, connecting the smallest arteries to the smallest veins - the actual site where gasses and nutrients are exchanged.
Capillaries
Capillus
hair
muscular pump located between your lungs above your diaphragm.
Heart
