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WorksheetsCirculation, heart and a little bit of scientific method
Total questions: 53
Worksheet time: 53mins
The skin excretes
urea, excess water, excess salts
cardbon dioxide, excess water
bile pigments
The lungs excretes
urea, excess water, excess salts
cardbon dioxide, excess water
bile pigments
When blood is always contained in a series of blood vessels, it is known as...
an open blood system
a closed blood system
Plasma is made up of...
10% water and 90% dissolved substances
90% water and 10% red blood cells
90% water and 10% dissolved substances
10% white blood cells and 90% water
There are more white blood cells than red blood cells
True
False
The function of red blood cells is to..
carry oxygen
fight diseases
stop excessive bleeding
The biconcave shape of a red blood cell allows it to...
be stacked
move through small capillaries
allow more oxygen to be absorbed
The disk shape of a red blood cell allows it to...
be stacked
fight diseases
allow more oxygen to be absorbed
Oxy-haemoglobin is found in
red blood
blue blood
Blood with a high concentration oxy-hameoglobin can be found in the....
left side of the heart
right side of the heart
Leucocytes...
carry oxygen
destroy bacteria and viruses
stops excessive bleeding
Leucocytes do not have a nucleus to make space for more haemoglobin
True
False
Platelets are cells
True
False
A blood clot is called a...
Thrombin
Fibrin mesh
Thrombocyte
Thrombosis
The first function of blood is to...
carry nutrients and oxygen to the body, and carry excretory substances to excretory organs to be excreted
help with the digestion of food
helps with the formation of blood clots through a platelet plug and fibrin mesh
The second function of blood is to...
fight diseases
circulate heat and hormones through the body
carry oxygen and nutrients
Oxygenated blood has...
high concentration oxygen; high concentration carbon dioxide
high concentration oxygen; low concentration carbon dioxide
low concentration oxygen; high concentration carbon dioxide
low concentration oxygen; low concentration carbon dioxide
Deoxygenated blood has...
high concentration oxygen; high concentration carbon dioxide
high concentration oxygen; low concentration carbon dioxide
low concentration oxygen; high concentration carbon dioxide
low concentration oxygen; low concentration carbon dioxide
The composition of blood varies based on where in the body it is. The blood going from the heart to the lungs will have...
high concentration oxygen; high concentration carbon dioxide
high concentration oxygen; low concentration carbon dioxide
low concentration oxygen; high concentration carbon dioxide
low concentration oxygen; low concentration carbon dioxide
The composition of blood varies based on where in the body it is. The blood going from the body to the heart will have...
high concentration oxygen; high concentration carbon dioxide
high concentration oxygen; low concentration carbon dioxide
low concentration oxygen; high concentration carbon dioxide
low concentration oxygen; low concentration carbon dioxide
The composition of blood varies based on where in the body it is. The blood going from the heart to the bodywill have...
high concentration oxygen; high concentration carbon dioxide
high concentration oxygen; low concentration carbon dioxide
low concentration oxygen; high concentration carbon dioxide
low concentration oxygen; low concentration carbon dioxide
The arteries have...
1 thin layer to allow diffusion
2 layers to withstand a lot of pressure
3 layers to withstand a lot of pressure
Veins are thicker and stronger than arteries
True
False
Arteries carry blood...
to the heart
away from the heart
When plasma leaks out of tiny pores in capillaries, it is called...
diffusion
tissue fluid
water
nutrient water
Veins take blood...
to the heart
away from the heart
Veins have a method of preventing backflow of blood. This includes...
two-way vales
one-way valves
a lot of pressure
When these veins valves do not function correctly it can lead to...
coronary vein disease
angina
varicose veins
hypertension
The membrane surrounding the outside of the heart is...
the pericardium
the endothelium
the epidermis
The two top chambers of the heart are known as the...
atria
ventricles
The two top chambers of the heart are known as the...
atria
ventricles
____________ blood flows from the lungs to the heart
Oxygenated
Deoxygenated
Blood flows from the lungs into the _____________ of the heart
left atrium
right atrium
left ventricle
right ventricle
Blood flows from the body into the _____________ of the heart
left atrium
right atrium
left ventricle
right ventricle
Blood is pumped from the _____________ to the body
left atrium
left ventricle
right atrium
right ventricle
Blood is pumped through the _________ from the heart to the body
pulmonary vein
pulmonary artery
aorta
vena cava
Blood flows through the _________ from the lungs to the heart
pulmonary vein
pulmonary artery
aorta
vena cava
Blood flows through the _________ from the body to the heart
pulmonary vein
pulmonary artery
aorta
vena cava
When blood enters the left atria of the heart, where does it go next?
the right atria
the left ventricle
the aorta
the body
What separates the left and right sides of the heart?
one-way valves
septum
sternum
What separates the atria and ventricles of the heart?
one-way valves
septum
sternum
The heart gets its own supply of glucose and oxygen through...
coronary veins
coronary arteries
vena cava
aorta
When a coronary artery is blocked completely, it leads to...
A heart attack
Angina
Hypertension
Atherosclerosis
When cholesterol builds up on the inside of the arteries, it is known as...
Atherosclerosis
Stroke
Angina
Heart attack
When a blood clot forms in the arteries of the brain it causes...
angina
a stroke
a thrombosis
bleeding
The heart disease characterized by high blood pressure is known as....
Hypertension
Hypotension
Heart attack
Thrombosis
I am trying to see if drinking tea or coffee will give me more energy. What is the dependent variable?
Drinking tea of coffee
The amount of energy I have
I am trying to see if drinking tea or coffee will give me more energy. What is the independent variable?
Drinking tea of coffee
The amount of energy I have
We are testing out some running shoes. We had an athlete wear different running shoes and measured how far he could run in 60 seconds. What is the dependent variable?
The type of running shoe
How far he could run
The time it took for him to run
We are testing out some running shoes. We had an athlete wear different running shoes and measured how far he could run in 60 seconds. What is the independent variable?
The type of running shoe
How far he could run
The time it took for him to run
We are testing out some running shoes. We had an athlete wear different running shoes and measured how far he could run in 60 seconds. What is the constant variable?
The type of running shoe
How far he could run
The time it took for him to run
I wanted to see which colour dress made me look prettier. What is the independent variable?
the colour of the dress
how pretty I looked
I wanted to see which colour dress made me look prettier. What is the dependent variable?
the colour of the dress
how pretty I looked
