Choose the correct answer:

1. Which process occurs between the blood and the body’s cells?
a) filtration
b) internal respiration
c) breathing
d) external respiration
2. Which gas is needed by all cells?
a) sulfur b) oxygen c) carbon d) hydrogen
dioxide

3. How many breaths will a person take in one day if he or she takes 12
breaths per minute?
a) about 1000 b) about c) about d) about
17,000 10,000 1,000,000
4. Which are the tubes that the trachea branch into?
a) lungs b) alveoli c) bronchi d) bronchiole
s
5. Which term describes the mechanical movement of air into and out of
your lungs?
a) external b) internal c) breathin d) contraction
respiration respiration g
6. Which process returns glucose to the blood?
a) excretion b) exhalation c) filtration d) reabsorpti
on
7. Which of the following is NOT part of the excretory system?
a) lungs b) skin c) stomach d) kidneys
8. Which structure does urine leave a kidney through?
a) Bowman’s b) urethra c) ureter d) urinary
capsule bladder
9. Which happens first after the threshold is reached for an action
potential?
a) K+ ions enter the neuron.
b) Negatively charged proteins leave the neuron.
c) Na+ ions enter the neuron.
d) the myelin coat breaks down, allowing ions to freely cross the plasma
membrane.
10.Which is true about action potentials?

a) They move faster on neurons that have myelin.

b) They move at one speed on all neurons.
c) They cannot move between nodes on neurons.
d) They move only on neurons that do not have myelin.
11.Which is a chemical that diffuses across a synapse and binds to
receptors on a neighboring neuron?
a) dendrite
b) node
c) neurotransmitter
d) myelin
12.Which term best describes the nerves that relay information from
external sensory receptors to the central nervous system?
a) parasympathe b) sympathe c) somatic d) autonomic
tic tic
13.Which part of the nervous system is responsible for processing
reflexes?
a) cerebrum b) pons c) medulla d) spinal cord
oblonga
ta
14.When blood leaves the heart, where does it exit?
a) the aorta b) the c) the d) pulmonary
capillaries lungs vein
15.Which chamber pumps blood into the aorta?
a) right ventricle b) left c) right d) left atrium
ventricle atrium
16.Which component of the blood fights disease in the body?
a) platelets b) red blood c) plasma d) white
cells blood cells
17.Which process returns glucose to the blood?
a) excretion
b) filtration
c) reabsorption
d) exhalation
18.Which structure does urine leave a kidney through?
a) Bowman’s b) urethra c) ureter d) urinary
capsule bladder
19.Which of the following is NOT part of the excretory system?
a) lungs b) skin c) stomach d) kidneys
20.The opposite table shows the composition of a fluid in the body of a
healthy person: Which structure in the opposite figure contains this
liquid?

a) X b) Y c) Z d) L

21.Which of the following illustrates the correct pathway to get rid of

urea from the body?
a) liver ---- kidney---- urethra ---- urinary bladder
b) liver ---- urethra --- kidney- ---- ureter
c) liver ---- kidney---- ureter ---- urethra
d) liver ---- ureter --- kidney- ---- urinary bladder

22.the digestion process of food aims to its change into substances which
can be ………………
a) swallowed b) excreted c) defecate d) absorbed
d
23.where does the digestion of oils that are used in preparing meals
start?
a) In mouth b) In c) In d) In small
esophagus stomach intestine
24.Which of the following doesn’t agree with the characteristics of the
pulmonary vein?
a) It carries oxygenated blood
b) It has a wider lumen than that of the pulmonary artery
c) It carries blood under high pressure
d) The thickness of its wall is thinner than of the pulmonary arterty’s wall

25.The pulmonary artery contains ………….

a) Valve with 2 flaps
b) Blood with high pressure.
c) Blood towards the heart
d) Oxygenated blood
 26.Which of the following groups represents the blood vessels carrying
oxygenated blood ?
a) Aorta --- pulmonary artery ----- renal artery
b) Aorta --- pulmonary vein ----- renal artery
c) Vena cavae --- pulmonary artery ----- renal vein
d) Vena cavae --- pulmonary vein ----- renal vein
27.If the blood a person contains a number of blood platelets less than
the normal level, which of the following processes will be affected ?
a) The transport of oxygen from the two longs to the heart
b) The rate of coagulation occurrence when exposed to bleeding
c) The production of anti bodies
d) The attacking of microbes
28. What is the number of the major blood vessels that carry oxygenated
blood and come out from the heart?
a) 1 b) 2 c) 3 d) 4

variant question:

1- What are the functional units in the kidneys called?

…………………………………………………………………………………………………………………………
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2- How do the kidneys help maintain blood pH?
…………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………
3- What primary function do these structures have?
4- A nitrogenous waste product resulting from kidney filtration is called
………………
5- The enzyme involved in protein digestion in the stomach is called …………….
6- What causes inhalation during breathing?
…………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………
7-What is the round, thin-walled air sac structures in the lungs?
…………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………
8- The exchange of gases between the blood and the body's cells is called
………………….
9- The atrium is part of the passageway that air travels through in the
respiratory system (true or false)
10 - Indicate the path that air takes from where it enters the body to where
gases are exchanged before leaving the body
…………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………
11- Summarize the functions of the main blood components. Use the terms
plasma, red blood cells, white blood cells, and platelets in your answer.
…………………………………………………………………………………………………………………………
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12- What causes inhalation during breathing?
…………………………………………………………………………………………………………………………
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13- the human heart contains valves with specific fixed function
How far is this statement correct ? with explanation.
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14- give reason for : the artery wall is thicker than the vein wall .
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15- what is the difference between pulmonary vein and pulmonary artery ?
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