Unit 3.Circulatory System Flashcards
(23 cards)
What does the circulatory system do
It transports substances around the body
What are the components of the circulatory system
The heart ,blood vessels and blood
What is contained in blood
Digested food White blood cells (1%) Waste Platelets Hormones Plasma [4%] Carbon dioxide Oxygen Red blood cells (50%)
Where does blood carry nutrients and oxygen
To the cells
And removes carbon dioxide and waste from the cells
Where are the waste products sent to
The excretory organs
Lungs,kidney ,skin
,
What are the nutrients and oxygen used for
For respiration and raw materials for growth
True or false
Humans have a closed blood system
True
This means that of life throws around the body contained in blood vessels
What are capillaries
The are the smallest blood vessels in the circulatory system and a punched up from the arteries
What makes it easy for nutrients and gasses to pass through thr capillary walls easily
It has thin walls
What are veins
Blood vessels that carry blood to the heart (van)
What do you veins removed
Come dioxide and other waste substances from the cells
What are the main functions of the circulatory system
Circulating blood between the heart and the lungs
The blood going out of the heart are oxygen poor and the blood that goes into the heart is oxygen rich (veins)
It also circulates blood throughout the whole body and provides oxygen rich form the lungs blood to every living cell
What are the 3 types of blood vessels
Arteries veins and capillaries
How are human red blood cells adapted to their function
They have no nucleus
What is the function of blood plasma
To transport digested food
Why type of blood vessel has a pulse
Artery
What type of blood vessel has valves inside
Veins ,that prevent backward blood flow
Which chamber pumps blood into the lungs
The right ventricle
Which blood vessel leaves the lung
The pulmonary vein
Which ventricular wall is the thickest
The left bc it pumps flood throughout the body unlike the right that only pumps to the heart which is closer
What type of blood enters the left side of the heart
Oxygen -rich that comes form the lungs
Are arteries oxygen rich and why
Yes ,bc they carry blood thought the whole body from the lungs
Are the veins oxygen poor
Yes
Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation.
