unit 1 The Cardiovasular System Flashcards
The circulatory system is the body’s …. System
Transport
What is the body’s transport system called
Circulatory system
The circulatory system consists of…
The heart, blood vessels and the blood
There are actually… separate circulatory systems; one ….
2, carries blood from the heart to the lungs garthering oxygen then back to the heart to the second system which carried the oxygenated blood round the body to give the cells nutrients then back to the heart and repeat
When the heart muscle relaxes… then the… contracts causing… then the… contract causing,… they take the blood to..
Blood flows through the veins into the left atrium from the lungs and the right atrium from the body, atria, the blood to be squeezed into the ventricles, ventricles, the blood to be forced into the 2 arteries, the body and the lungs.
Why can’t the blood flow backwards
The valves stop them
Write out the order the blood goes through the body
Look in book
LORD stands for.. and helps u remember…
Left Oxygenated Right Deoxygenated, which side of the heart has oxygenated and deoxygenated blood flowing through it
Draw a labelled disagram of the heart
Look in book
Veins go.. the heart
Into
Artery’s go… from the heart
Away
Pulmonary means..
The lungs
The heart is mostly made of…
Cardiac muscle
What is the function of an artery, is the blood oxygenated or not?
Carries blood at a high pressure from the heart to organs, oxygenated (other than pulmonary artery)
Draw a labelled diagram of an arteries and say it’s size
In book
Describe an artery’s structure and what the features do and does it have valves?
-thick walls-helps carry at high pressure
-lots of elastic tissues near heart- maintain pressure
-no valves
-larger size
-narrower lumen
functions of a capillary
substance exchange - where oxygen and carbon dioxide is exchanged
draw a capillary and say it’s size
in book
describe the structure of a capillary and what the features do
-1 cell thick walls to allow diffusion
-very small lumen diameter
-no valves
functions of a vein
carries blood from organs to the heart
is the blood in veins oxygenated
deoxygenated other than the pulmonary vein
draw a diagram of a vein and say it’s size
in book
describe the structure of a vein and what the features do
-valves- stop the blood from flowing backwards
-large size-helps more blood flow through
-thin walls-low pressure
- the surrounding muscles tense which is want makes the blood go through the vein
blood pressure is measured in..
mmHg
