Download 1- Complete the following statements

1- Complete the following statements :
1- The heart is located within the chest cavity between the 2 lungs.
2- The heart is a muscular hollow organ , which always full of blood.
3- The heart consists of 4 chambers connected to blood vessels.
4- The blood flows from the atrium to ventricle through the valve.
5- The blood flows inside a network of pipelines called blood vessels.
6- The blood vessels that emerge from the heart are called arteries.
7- Vessels that carry blood to the heart are called veins.
8- Arteries end with blood capillaries, while veins begin with blood
capillaries.
9- All arteries carry blood rich in oxygen except the pulmonary artery.
10- All veins carry blood rich in carbon dioxide except the pulmonary veins.
11- The atria receive blood from veins , while the ventricle push blood into
arteries.
12- The blood consists of red blood cells, white blood cells, plasma and
platelets.
13- Red blood cells carry oxygen and carbon dioxide inside the body.
14- White blood cells attack microbes that cause diseases to human.
15- Blood platelets form blood clots which help in healing wounds.
16- Right atrium receives blood from all body parts except the lungs.
17- The left ventricle pushes the blood through Aorta artery.
18- The heart is the source of the pulses in your wrist.
19- The number of heartbeats is 70 per minute.
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2- Choose the correct answer :
1- The heart is a muscular pump in the size of your ………….
a. fingers
b. foot
c. head
d. fist
2- The circulatory system transports the ………. Inside the body.
a. digested food and water
b. respiratory gases
c. wastes
d. (a) , (b) and (c)
3- Blood vessels which carry blood from the heart are the ………..
a. arteries
b. veins
c. blood capillaries
d. valves
4- The function of red blood cells is …………….
a. blood clotting
b. carrying the digested food.
c. carrying oxygen
d. (b) and (c).
5- Blood components which are responsible for attacking the microbes that
cause diseases to man are the ……………
a. red blood corpuscles
b. white blood corpuscles
c. blood platelets
d. plasma
6- The blood is liquid due to the presence of the ………..
a. platelets
b. plasma
c. blood vessels
d. heart
7- The functions of the blood are ……………..
a. the defence of the body only
b. keeping the temperature of the
body constant only
c. the delivery of materials only
d. (a), (b) and (c)
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8- The blood rich in carbon dioxide is collected from all the body parts to
the heart through ……………
a. venae cavae
b. aorta artery
c. pulmonary veins
d. pulmonary artery
9- The aorta artery is connected to the ………..
a. left atrium
b. right atrium
c. left ventricle
d. right ventricle
10-
……… is the blood circulation between the heart and all the parts of
the body.
a. Systemic blood circulation
b. Pulmonary blood circulation
c. Artery
d. Vein
3- Put (√ ) in front of the correct statement and (X) in front of the incorrect
ones, then correct it :
1- The heart consists of two atria and two ventricles.
(√ )
2- Blood of both sides in the heart can be mixed. (can't be)
(X)
3- Blood capillaries are considered the ends of arteries and the
(√ )
beginnings of veins.
4- White blood cells help in healing wounds by formation of blood
clot. (blood platelets)
(X)
5- RBC’s are red cells with nuclei. (without)
(X)
4- Write the scientific term for each of the following:
1- A muscular organ, equals about your fist size and
located within the chest.
(Heart)
2- The lower two chambers of the heart.
3
(Ventricles)
3- The network of pipelines that extends all over the
human body.
(Blood vessels)
4- The artery that carries blood rich in carbon dioxide.
(Pulmonary artery)
5- The blood vessels that collect blood from all the
body parts and pour it into the heart.
(Vana cava)
6- The cells that have no nuclei.
(Red blood cells)
7- The cells which carry oxygen gas.
(Red blood cells)
8- Small bodies that play a role in blood coagulation
when the body is wounded.
(Blood platelets)
9- A yellow watery fluid in which blood cells float.
(Plasma)
10- The flow of blood to the lungs and its returning
back again to the heart.
(Minor circulation)
11- The chamber of the heart that receives blood rich
in carbon dioxide.
(Right atrium)
12- The chamber that receives the blood rich in
oxygen from the two lungs.
(Left atrium)
13- The veins that transport the blood rich in carbon
dioxide to the right atrium.
(Vana cava)
14- The path of blood throughout the body
(blood circulation)
5- Correct the underlined words :
1- The lung is a muscular organ in the size of fist. (Heart)
2- The heart pumps blood into veins. (Arteries)
3- The upper chambers of the heart are called ventricles. (Atriums)
4- The atria pump blood out of the heart. (Ventricles)
5- The veins carry blood from the heart to all the body parts. (Arteries)
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6- There are walls within the heart cavity (between each atrium and ventricle).
(Valve)
7- The aorta delivers the blood to the lungs. (Pulmonary artery)
8- Red blood cells defend the body against microbes. (White blood cells)
9- The pulmonary veins carry blood rich in carbon dioxide. (Oxygen)
10- Eating meals rich in fats and salt activates the circulatory system. (harm)
6- Give reasons for :
1- The two sides of the heart are separated.
To prevent the blood from mixing together
2- The heart contains valves.
To allow the blood to pass from the atrium to the ventricle not vice
versa.
3- Blood flows in one direction inside the heart.
Because there are valves inside the heart
4- The wall of the left ventricle is thicker than that of the right
one.
Because right ventricle pumps the blood to the lungs only while the lefy
ventricle pumps the blood to all body parts.
5- Blood capillaries have thin walls.
To allow the exchange of materials between blood and cells
6- The red blood cells have a great importance.
Because they carry oxygen gas to the body cells and carry corbon
dioxide gas to the lungs.
7- It is necessary to keep exercising.
To strengthen the heart and activate the blood circulation
8- Smoking must be avoided.
Because it harms the heart and causes weakness
To keep the circulatory system healthy
9- It is necessary to avoid the exposure to infections and
accidents.
To keep the circulatory system healthy
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7- Write the function of each of the following :
1- The red blood cells. (Carry oxygen and carbon dioxide gases)
2- The white blood cells (defend the body against diseases)
3- The blood platelets (help in healing wounds and forming blood clots)
4- Plasma. (carries the food and wastes)
8- Examine the opposite figure, then complete the following :
a-
The heart lies in the abdominal cavity.
b- Aorta originates from left ventricle.
c-
Pulmonary artery originates from right
ventricle.
d-
Pulmonary circulation changes the
deoxygenated blood into oxygenated blood
e-
Blood is transported from all parts of the body
by veins to the heart.
f-
Number of heartbeats is 70 per a minute.
9- Label the opposite diagram :
1- Muscular wall
2- Blood capillaries in head
3- Pulmonary artery
4- Inferior vana cava
5- Superior vana cava
6- Pulmonary vains
7- Aorta artery
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