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CIRCULATION IN HUMAN
1- Oxyhemoglobin is formed in
a) Lungs b) Spleen c) Right atrium
d) Left atrium e) Bone marrow
2- Which pigment gives red color to blood ?
a) Chlorophyll b) Xanthophyll c) Hemoglobin d) Carotens e) All of them
3- Which blood cell protects the body from infection ?
a) Platelets b) Red blood cell c) Nervous cell d) White blood cell e) Stomata
4- Which artery is carried deoxygenated blood ?
a) Aorta b) Pulmonary artery c) Cronary artery d) All of them e) None
5- ------------------- are used in blood clotting process ?
a) Platelets b) Red blood cell c) Nervous cell d) White blood cell e) Plasma
6- Which of the following is not found in plasma ?
a) Protein b) Water c) Lipid d) Mineral e) Hemoglobin
7-Two organisms that have blood transport system containing hemoglobin which aids in transport of oxygen , are the
a) Paramecium Amoeba b) Hydra Earthworm
c) Earthworm Human d) Grsshopper Human
e) Spongy Human
8- Which parts of the humans heart have oxygenated blood ?
a) Right atrium Right ventricle b) Left atrium Left ventricle c) Right and left ventricle d) Right and left atrium e) Right atrium-left ventricle
9- Which of the following carry oxygen from lungs to the other organs ?
a) Platelets b) Red blood cell c) Artery
d) White blood cell e) Water
10- What is located under the chest bone between lungs in the chest cavity ?
a) Lungs b) Kidney c) Stomach d) Heart e) Small intestine
11- Which of the following explanes the material exchange between cell and tissue ?
a) The flow of interstitial fluid to the capillaries accelerates b) Interstitial fluid and the capillaries are osmotically balanced
c) The flow from capillaries to the tissues is continuaus d) The blood pressure increases in the venules
e) Osmotic pressure alternates through the blood capillaries
12- Which one of the following is not releated to the circulation of lymph ?
a) Lymphocytes are involved in this system b) Lymphatic circulation balances the blood volume
c) The content of lymph fluid is almost the same as blood plasma d) There are no erythrocytes in lymph fluid
e) Fats absorbed from the small intestine combine with general circulation via lymph circulation
13- Which of the following events is the result of contraction of the left atrium ?
a)Consignment of blood into the arteries
b)Movement of blood from veins to aorta
c)Movement of blood into the left ventricle
d) Consignment of blood into the right ventricle
e) Pumping of blopod to the coronary veins
14- In which region of the circulatory system does the concentration of CO2 in blood begin to increase ?
a)Arteries b)The inferior vena cava
c)The capillaries at the tissues d) Alveoli in the lungs
e) The right atrium
15- Which one of the following is not a factor that affects the heart rate ?
a) CO2 concentration in the blood
b) Alterations in altitude and pressure
c) Changes in temparature
d) Day and night
e) Intervation of the vagus nerve
16- 1- Left ventricle 2- Capillaries in tissues
3- Interstitial fluid 4- Aorta 5- Cells
The structures which transport oxygen from heart to the tissues are listed above. Determine the correct order of structures through which a red blood cell loaded with oxygen would pass .
a)2-3-4-5-1 b)2-5-3-4-1 c)1-4-2-3-5 d)5-4-2-3-1 e)5-4-3-2-1
17- Which one does not take role in the systemic circulation ?
a) Body capillaries b) Body veins c) Pulmonary vein d) Left ventricle e) Aorta
18- The aim of pulmonary circulation is
a) to remove blood fron heart b) to charge blood with oxygen c) to feed body organs d) All of them
19- What is done by the systemic circulation ?
a) Blood is separated to the body b) Blood is cleaned c) Blood is rested d) None
20- 1-Vitamins 2-Hormone 3-Fibrinogen 4- Antibodies
Which of the above materials should be removed from blood during serum production ?
a) 1 b)2 c)3 d)4 e)1-2
21- In blood, oxygen is carried primarly
a) As oxyhemoglobin b) in solution in the plasma
c) As carbonic acid d) As carboxyhemoglobins
22- Which of the following blood vessels contains large number of oxyhemoglobin ?
a) All arteries b) All veins c) Capillaries
d) Pulmonary arterie e) Pulmonary vein
23- Organic molecules are transported to the lungs by which type of circulation and blood vessels ?
a)SystemicPulmonary artery b)SystemicPulmonary vein c)PulmonaryAort d)PulmonaryPulmonary artery e) None
24- What is the last product of blood clotting reactions ?
a) Prothrombin b) Thrombin c) Trombokinase d) Fibrinogen e) Fibrin
25- I-Vitamin K II-Fibrinogen
III-Prothrombin IV- Leucocyte
Which of the aboves arent affective in the blood clotting ?
a) III b) IV c) I II d) II III e) I II III
26-All of the following are found in the blood plasma EXCEPT
a) Vitamin b) Glucose c) Salts d) Enzymes e) CO2
27- Which of the following is not an effective factor in blood clotting ?
a) Fibrinogen b) Ca c) Vitamin K
d) Thrombin e) Albumin
28-Which of the following is the most numerous in human blood
a) Leucocytes b) Platelets c) Erythrocytes d) Lymphocytes e) Monocytes
29- Which one gives the correct order of blood pressure ?
a) Arteries Capillaries Veins
b) Veins Arteies Capillaries
c) Capillaries Arteries Veins
d) Veins Capillaries Arteries
e) Arteries Veins Capillaries
30- Serum contains all of the following EXCEPT
a) Vitamins b) Hormones c) Antibodies
d) Water e) Fibronogen
31- Which of the following features of the human heart is incorrect ?
a) It is two chambered b) Contains deoxygenated blood c) The oxygenated blood is pumped via a discrete vessels
d) The blood enters the heart after passing through the respiratory organ
e) The deoxygenated blood is retrieved from the tissues and passesthrough the heart
32- Which of the following is not a function of blood plasma ?
a)Transport of O2 and CO2 b)Transport of O2
c)Transport of nutrients to cell d) ransport of hormones e)Excretion of wastes from cells
33- Which of the following is not an effective factor in blood coagulation ?
a) Fibrinogen b) Ca c) Vitamin K
d) Thrombokinase e) Hemoglobin
34- In what way do valves in the veins aid in circulation ?
a)They prevent the spurting action from becoming too uneven b)They separate oxygenated blood from deoxygenated blood c)They keep the blood from flowing backward
d) Filter out blood clots
e)They reduce the pressure with which the heart sends blood into the veins
35- During the clotting process, fibrinogen is converted into
a) Thromboplastin b) Fibrin c) Platelets
d) Prothrombin e) Thrombin
36- Which of the following proteins is required for the fibrinogen to fibrin conversion?
a)Thromboplastin b) fibrin c) Platelets
d) Prothrombin e) Thrombin
37- Which of the following vitamin dificiencies depresses the levels of prothrombin?
a)Vitamin A b) Vitamin B c) Vitamin C
d) Vitamin K e) Vitamin D
38- Which of the following plasma proteins are important in regulating the water content of the cells and body fluid?
a)Albumins b) Globulins c) Gamma globulins
d) a + b e) b + c
39- A person with iron deficiency in his diet may become anemia because
a) not enough oxyhemoglobin is formed in the liver
b) the spleen removes too mant leucocytes from the blood
c) the clotting reaction time is reduced
d) iron is needed to build up hemoglobin
e) iron is used in making fibrinogen
40- Which one of the following recipients can not receive blood from a man with group 0 Rh positive
a) A Rh + b) B Rh + c) AB Rh + d) 0 Rh -
41- Red blood cells and white blood cells form in the
a)Thymus b)Arterial walls c)Lymph nodes d)Bone marrow
42-- The blood type known as the universal donor is
a) A b) B c) AB d) 0 e) Rh factor
42-Which is not a function of the blood?
a) Transports of nutrients and oxygen to the cells
b) Removal of carbon dioxide and other wastes
c) Transport of hormones to target organs
d) Regulation of acidity and alkalinity of the cells
e) All of the above are functions of the blood
43-The blood plasma contains a number of inorganic cations and anions. If NaCl increases in concentration in the plasma, thus increasing the number of ions, what will be the result?
a) Blood pressure will decrease
b) Blood pressure will increase
c) Blood pressure will remain unchanged
44- The combination of oxygen with hemoglobin and its release from oxyhemoglobin are controlled by
a) Carbon dioxide concentration b) Oxygen concentration
c) Carbonic acid concentration d) a + b e) b + c
45)Red blood cells originate in the
a) Bone marrow b) Spleen c) Kidneys d) Liver e) Lungs
46- All of the following can cause an increase in the amount of blood pumped by the heart except
a) A rise in carbon dioxide content of the blood
b) Decreased temperature c) Hormones d) Nerves
47-Which of the following carries blood from the head, neck and arms to the heart?
a) Superior vena cava b) Inferior vena cava
c) Pulmonary artery d) Pulmonary vein
48-The characteristic sounds of the beating heart are caused by
(a) the closure of the semilunar values
(b) the closure of the tri- and bicuspid valves
(b) the contraction of the muscle in the ventricle
(d) all of the above
49-What is responsible for the initiation of the heart beat and the regulation of the rate of contraction?
(a) the sinoatrial node (b) the atrioventricular node
(c) the pacemaker (d) a and c are correct
50-The connective tissue sac enclosing the heart is called the
(a) endothelium (b) myocardium (c) pericardi (d) vena cava
51-Which of the following is incorrect?
(a) the atria and the ventricles contract simultaneously
(b) the period of heart contraction is called systole
(c) a heart murmur may be a symptom of a damaged valve
(d) sympathetic nerve stimulation increases the heart rate
52-Which of the following is not a function of the circulatory system?
(a)transport nutrients to each cell
(b) regulates body temperature
(c)produce oxygen
(d) protects body against invading microorganisms
53-The pumping chambers of the heart are called
(a) atria (b) ventricles (c) pacemaker (d) cardiac muscle
54-Sensory receptors in the walls of the vena cava and right atrium are stimulated when
(a) vessels are distended with blood and the wall is stretched
(b) blood temperature changes
(c) a rise in the carbon dioxide content of the blood occurs
(d) none of the above
55- Which of the following is not a feature of veins ?
a) Thinner walls than arteries b) Less elasticity than arteries c)Valves present in their vessels d)Transport of oxygenated blood e) Movement aided by skeletal muscles
56- Which of the following is not a feature of arteries ?
a) They are thick walled b) They have high blood pressure
c) They contain much elastic fiber tissues
d) They carry blood away from the heart
e) They contain valves
57- Which is wrong about the vessels ?
a) Capillaries are microscopic vessels
b) All veins carry deoxygenated blood
c) There are 3 types of vessels
d) Arteries transport blood from heart to the organs
58-Which represents the correct sequence in the clotting of blood ?
a) Platelets,fibrinogen,prothrombin,fibrin,thrombin
b) Platelets,prothrombin,thrombin,fibrinogen,fibrin
c) Platelets,thrombin,fibrinogen,prothrombin,fibrin
d) Platelets,fibrin,fibrinogen,thrombin,prothrombin
e) Platelets,fibrinogen,prothrombin,fibrin,thrombin
59- Most of the CO2 is carried in the blood stream by;
a) Plasma b) HCO3 ions c) Myoglobin
d) Carbon monoxide e)Hemoglobin
60- The blood pressure is highest in
a) Surerior vena cava b) Aorta c) Pulmonary artery
d) Pulmonary vein e) Lungs capillaries
61- All the following statements about arteries are true EXCEPT a). they are thick-walled b). they pulsate c). they contain much elastic fiber tissue d). they carry blood away from the heart e). they contain valves
62- All the following veins carry deoxygenated blood EXCEPT the
a). superior vena cava
b). inferior vena cava
c). pulmonary vein
d). renal vein
e). hepatic vein
67. Blood returning from the lungs enters the heart through the
a). pulmonary artery b). Aorta c). pulmonary veins d). vena cava e). coronary vein
68-The liquid that bathes the cells of the body is called
a) fibrinogen
b) lymph
c) plasma
d)fibrin
e) blood
69- All the following about white blood cells is true EXCEPT:
a) they are formed in lymph glands
b) they are formed in the marrow
c) they move like amoeba
d) they are phagocytotic
e) they are nucleated
70-Which one of the following does not exist in human blood?
A) Mucus B)Hormone
C) Minerals D)Vitamins
E) Blood platelets
71- I. Left ventricle
II. Cappilaries in tissue
III. Interstitial fluid
IV. Aorta
V. Cells
The structures which transport oxygen from the heart
to the tissues are listed above. Determine the correct
order of structures through which a red blood cell
loaded with oxygen would pass
a) II-III-IV-V-I b) II-V-III-IV-I c) I-IV-II-III-V
d) V-IV-II-III-I e) V-IV-III-II-I
72- I. Automatic Nervous System
II. (A.V) Atrioventricular node
III.(S.A) Sinoatrial node
Which of the following is the correct sequence of the above structures that affect heart function?
a) I-II-III b) II-III-I c) I-III-II
d) III-II-I e) II-I-III
73- I. Muscular Tissue
II. Epithelial tissue (endothelium)
III. Valve
IV. Connective tissue
Which of the above structutes involved in the circulatory system is common to both the heart and blood vessels?
a) I b) II c) I-III d) III e) I-IV
74-Which one of the followinf is not a factor that affects
the heart rate?
a) CO2 concentration in the blood
b) Alterations in altitude and pressure
c) Changes in temperature
d) Day and night
e) Inervation of the vagus nerve
75- In the normal human circulatory system, the mean blood pressure is lowest in the
B- arteries
C- arterioles
D- capillaries
E- inferior vena cava
76- Hemoglobin is a protein that functions in the transport of oxygen contained within red blood cells. Hemoglobin has been shown to consist of four independent polypeptide chains. The manner in which these four chains interact to form functional molecules is a characteristic of hemoglobins
A- secondary structure
B- tertiary structure
C- quaternary structure
D- denaturation
E- melting point
77-Which of the following events is the result of contraction of the left atrium?
A) consignment of blood into the arteries
B) movement of blood from veins to atria
C) movement of blood into the left ventriels
D) consignment of blood into the left ventricle
E) pumping of blood to the coranary veins
78-Un which region of the circulatory system does the concentration of CO in blood begin to increase?
A) arteries
B) the inferior vena cava
C) the capillaries at the tissues
D) alveoli in the lungs
E) the right atrium
79-Which of the following is not a factor that affets the heart rate?
A) CO concentration in the blood
B) Alteration in altitude and pressure
C) Changes in temperature
D) Day and night
E) None of them
80-Which of the following has adifferent circulatory system?
A) Human being
B) Earthworm
C) Frog
D) Fish
E) Grasshopper
81-Which of the following types of heart contains the lowest level of oxyhemoglobin?
A) Bird
B) Frog
C) Fish
D) Mammal
E) Reptile
82-Which of the following valves allows deoxygenated blood to enter the pulmonary artery?
A) atrioventrical valve
B) aortic seminular valve
C) bicuspid valve
D) tricuspid valve
E) pulmonary seminular valve
83-In which the following vessels the blood pressure is the greatest?
A) IVC
B) SVC
C) Aorta
D) Capillaries
E) Pulmonary artery
84-Which is not property of arteries?
A) they have tick walls
B) they extend from the atria
C) they pump blood into organs
D) they have high blood pressure
85-The approximate weight of adult male heart is about;
A) 300g
B) 150g
C) 450g
D) 600g
E) 750g
86-Which blood vessel allows the material exchange between blood and tissue cells?
A) capillary
B) vein
C) artery
D) aorta
E) coronary artery
87-Which one is found in the structure of heart?
A) valves
B) atria
C) ventricle
D) all
88-The largest artery in the body is the?
A) Inferior vena cava
B) Aorta
C) Carotid artry
D) Superior vena cava
89-The aim of systemic circulaton is
A) to remove blood from heart
B) to charge blood with oxygen
C) to feed body cells
D) to remove CO2
90-Which doesnt take role in the systemic circulation?
A) Body capillaries
B) Body veins
C) Left ventricle
D) Pulmonary artery
91-The human heart consist of
A) 2 atria, 2 ventricles
B) 1 atrium, 1 ventricle
C) 2 atria, 1 ventricle
D) 1 atrium, 2 ventricles
92-Which is wrong about blood vessels?
A) There are three types of blood vessels
B) Capillaries are the microscipic vessels
C) All arteries carry oxygenated blood
D) Veins transport blood from the organs to the heart.
93-Which one of the following is not a feature of lymphatic circulation?
A) transprt of nutrient
B) contribution to fat absorbtion
C) absence of fibronogen
D) transport of O and CO
E) involvement in immunity
94-Which of the following is not an effective factor in blood coagulation?
A) fibronogen
B) hemoglobin
C) Ca ions
D) Vitamin K
E) Thrombokinase
95-Which of the following is not an organ involved in the regulation of blood concentration?
A) small intestine
B) kidney
C) spleen
D) liver
E) heart
96-Which statement is not true about capillary flow and exchange?
a. blood flow is slowest in the capillaries
b. gases diffuse in and out of the blood along concentration gradients
c. water can not out of capillaries
d. flow of blood through capillaries is controlled by sphincters
e. large molecules move in and out of capillaries
97-A person with hemophilia
1. is unlikely to ever have a stroke
2. has a deficiency in the blood clotting mechanism
3. does not have adequate numbers of red blood cells
4. needs to be careful about getting bruised or cut
a. 1,2 and 3
b. 2 and 3
c. 1 and 3
d. 1,2 and 4
e. 3 and 4
f.
98-The role of the atrioventricular node is to
a. control the heart rate
b. pump blood from atrium to ventricle
c. delay the electrical signal to the ventricle
d. delay the electrical signal to the atrium
e. produce the signal that contract the ventricle
99-Which is found in the blood?
a) erythrocytes b)antibodies
d) water d)glucose e) all of them
100- Deoxygenated blood is transported in the
101 in humans, lacks chromatin when fully differentiated
A. zygote B. erythrocyte C. pollen D. Schwann cell
E. sperm
102-As blood moves away from and then back to the heart, it will pass through
A. Veins-> venules->capillaries-> arterioles-> arteries
B. Capillaries-> arteries->arterioles-> venules-> veins
C. Venules->veins->arteries-> arterioles->capillaries
D. Arteries->arterioles -> capillaries -> venules-> veins
E. Arterioles->arteries-> venules->veins->capillaries
103-Which statement is not true about capillary flow and exchange?
A. Blood flow is slowest in the capillaries
B. Gases diffuse in and out of blood along concentration gradients
C. Water cannot move out of capillaries
D. Flow of blood through capillaries is controlled by sphincters
E. Large molecules move in and out of capillaries by endo- and exo- cytosis
104- The role of the atrioventricular node is to
a. control the heart rate
b. pump blood atrium to ventricle
c. delay the electrical signal to the ventricle
d. delay the electrical singal to the atrium
e. produce the signal that contract the ventricle