WorksheetsCardiovascular System Quiz
Total questions: 96
Worksheet time: 48mins
Which of the following is NOT a function of the cardiovascular system?
Transportation of food, gases, wastes, hormones
Combat infection
Production of digestive enzymes
Maintain balance in body fluids and electrolytes
What is the main function of the heart in the cardiovascular system?
To filter blood
To pump blood
To produce hormones
To absorb nutrients
Which chamber of the heart receives blood back from the body?
Right ventricle
Left ventricle
Right atrium
Left atrium
What is the function of the valves in the heart?
To pump blood
To prevent the backflow of blood
To supply oxygen to the heart muscle
To regulate heart rate
Which valve is found between the left atrium and left ventricle?
Tricuspid valve
Pulmonary semilunar valve
Bicuspid (mitral) valve
Aortic semilunar valve
Place the following in the correct order for the pathway of blood through the heart, starting from the vena cava.
Right atrium → tricuspid valve → right ventricle → pulmonary semilunar valve → pulmonary artery
Right ventricle → tricuspid valve → right atrium → pulmonary artery
Pulmonary vein → left atrium → bicuspid valve → right ventricle
Left ventricle → aortic semilunar valve → vena cava
What is the role of coronary arteries?
Move blood from the heart tissue
Supply blood to the heart tissue
Pump blood to the lungs
Regulate heart rate
During which phase does the heart muscle contract?
Diastole
Systole
Intercalated disc
Relaxation
What is the function of the SA node in the heart?
It pumps blood to the lungs
It initiates electrical activity in the heart
It supplies oxygen to the heart muscle
It records the heart’s electrical activity
What does an electrocardiogram (ECG) record?
Blood pressure in the aorta
The contraction of heart muscles
The electro-activity through the heart
The flow of blood through the coronary arteries
Match the following ECG components with their corresponding heart activity: P wave, QRS complex, T wave.
P wave - ventricular diastole, QRS complex - atrial systole, T wave - ventricular systole
P wave - atrial systole, QRS complex - atrial diastole/ventricular systole, T wave - ventricular diastole
P wave - ventricular systole, QRS complex - atrial diastole, T wave - atrial systole
P wave - atrial diastole, QRS complex - ventricular diastole, T wave - atrial systole
Which part of the brain regulates the cardiac cycle (heart rate)?
Cerebellum
Medulla oblongata
Hypothalamus
Thalamus
How do baroreceptors help regulate heart rate?
By detecting oxygen levels in the lungs
By measuring blood pressure in the aorta and carotid arteries
By controlling the contraction of heart muscles
By producing hormones for the heart
Which type of blood vessel is responsible for carrying blood from the heart to a tissue?
artery
vein
capillary
venule
What is the main function of capillaries in the circulatory system?
Exchange of materials between the blood and cells
Carry blood from the heart to tissues
Return blood back to the heart
Regulate blood flow through vasoconstriction
What is the normal systolic pressure in the left ventricle during contraction (systole)?
120 mm Hg
80 mm Hg
100 mm Hg
140 mm Hg
Which of the following is NOT a function of blood?
Production of hormones
Transportation of food, gases, wastes, and hormones
Combat infection
Maintain balance in body: acid-base, fluid, electrolytes
What is the typical pH of blood?
7.38
6.8
8.2
7.0
Which component makes up about 55% of blood?
Plasma
Red blood cells
White blood cells
Platelets
What is the hematocrit (HCT) value for males?
45%
42%
38%
50%
Which of the following is a protein found in plasma that is involved in blood clotting?
Fibrinogen
Albumin
Gamma globulin
Hemoglobin
Which waste product is commonly found in plasma?
Urea
Glucose
Oxygen
Enzymes
Strategic Thinking: If a patient has a hematocrit value significantly lower than normal, what might this indicate about their health?
They may have anemia or a reduced number of red blood cells.
They have high blood pressure.
They have an infection.
They have excessive blood clotting.
Skill/Concept: Explain why maintaining the correct pH in blood is important for homeostasis.
It ensures proper enzyme function and metabolic processes.
It increases the oxygen-carrying capacity of blood.
It prevents blood from clotting.
It allows for better nutrient absorption.
Which of the following is NOT a function of the lymphatic system?
Lymphatic vessels return excess tissue fluid back to the bloodstream
Lymphatic capillaries absorb fat in the villi
Lymphatic vessels produce red blood cells
Help defend the body against diseases
What is the primary function of lymphatic capillaries?
Absorb oxygen from the blood
Collect interstitial fluid
Produce antibodies
Store glucose
Which condition is caused by the accumulation of tissue fluid resulting in swelling?
Edema
Anemia
Leukemia
Asthma
What is the main function of lymph nodes?
Produce insulin
Remove infectious organisms and other debris
Store calcium
Absorb nutrients
Which lymphoid organ is the largest and is located in the upper abdominal cavity?
Thymus
Spleen
Bone marrow
Lymph node
What is the consequence of a ruptured spleen?
Increased risk of diabetes
Increased susceptibility to infection
Decreased blood pressure
Enhanced immune response
Which of the following is a mechanical barrier method in general defense?
Skin and mucous membranes
Antibodies
Red blood cells
Hormones
What is the role of interferon in the immune system?
Forms pores in bacterial walls
Binds to uninfected cells to protect against viral attack
Absorbs fats in the villi
Produces red blood cells
Which cells are responsible for cell-mediated immunity?
B-lymphocytes
T-lymphocytes
Red blood cells
Platelets
A patient presents with swelling in a limb due to a tropical parasitic worm blocking lymphatic vessels. What is this condition called?
Edema
Elephantiasis
Leukemia
Lymphoma
Explain how lymphatic vessels contribute to maintaining fluid balance in the body.
They absorb oxygen from the lungs
They return excess tissue fluid back to the bloodstream
They produce digestive enzymes
They store vitamins
A person has a disease caused by bacteria. According to the learning material, what is the term for the study of the origin, cause, and classification of diseases?
Pathology
Etiology
Immunology
Virology
Describe the difference between general defense and specific defense in the immune system.
General defense targets specific microorganisms, while specific defense targets all pathogens.
General defense includes barriers and phagocytic cells, while specific defense involves responses against certain microorganisms using antigens.
General defense is only found in the spleen, while specific defense is found in the thymus.
General defense produces antibodies, while specific defense produces red blood cells.
Which type of lymphocyte produces specific antibodies against an antigen?
T-lymphocytes
B-lymphocytes
Macrophages
Neutrophils
What is the primary function of antibodies in the immune system?
To directly attack and destroy pathogens
To produce hormones
To help cells that do phagocytosis and attract neutrophils and macrophages to an area
To transport oxygen in the blood
Which of the following is an example of passive immunity?
Vaccination
Infection with a virus
Receiving antibodies through mother’s milk
Producing antibodies after exposure to a pathogen
Which of the following best describes active immunity?
Short-term protection by receiving antibodies
Long-lasting protection after infection or vaccination
Immediate allergic response
Tissue rejection after organ transplant
What causes an allergic reaction in the body?
T-cells attacking cells
Allergen binding to IgE on a mast cell, releasing histamines and other chemicals
B-lymphocytes producing antibodies
Macrophages engulfing pathogens
Which of the following is NOT a function of antibodies?
Clumping antigens together
Deactivating viruses
Producing insulin
Helping prevent the spread of an agent
A transplanted organ is recognized as foreign due to which of the following?
Presence of antibodies
Major histocompatibility complex (MHC)
Release of histamines
Production of insulin
Which of the following is an example of an autoimmune disease?
Influenza
Multiple sclerosis
Tuberculosis
Asthma
Why are immunosuppressive drugs used after organ transplantation?
To increase antibody production
To prevent tissue rejection by suppressing the immune response
To enhance allergic reactions
To destroy neuromuscular junctions
Which statement best explains the difference between active and passive immunity?
Active immunity is short-term, passive immunity is long-lasting
Active immunity involves the body producing its own antibodies, passive immunity involves receiving antibodies from another source
Passive immunity is only acquired through vaccination
Active immunity only occurs in newborns
Which organ in the urinary system is responsible for producing urine?
Ureters
Kidneys
Urinary bladder
Urethra
What is the main function of the ureters in the urinary system?
Store urine
Produce urine
Transport urine to the urinary bladder
Regulate blood pressure
Which hormone produced by the kidneys is responsible for red blood cell production?
Insulin
Renin
Erythropoietin
Adrenaline
What is the function of renin produced by the kidneys?
Regulate blood pressure
Filter blood fluid
Store urine
Produce urine
Which part of the kidney is composed of 6-18 triangular masses of tissue called renal pyramids?
Renal capsule
Cortex
Medulla
Ureter
What is the main function of the renal capsule?
Produce urine
Provide protection
Store urine
Regulate pH
Which structure in the nephron is responsible for filtering blood fluid?
Proximal convoluted tubule
Loop of Henle
Glomerulus
Medulla
What is the process called when substances are reabsorbed back into the blood in the nephron?
Filtration
Tubular secretion
Tubular reabsorption
Excretion
Which part of the nephron is responsible for concentrating urine by reabsorbing water through osmosis?
Glomerulus
Proximal convoluted tubule
Loop of Henle
Renal capsule
Explain how the structure of the glomerulus supports its function in the nephron.
The glomerulus is a single blood vessel that stores urine.
The glomerulus is a tangled cluster of blood vessels that increases surface area for filtration.
The glomerulus is a muscle that contracts to expel urine.
The glomerulus is a nerve that regulates blood pressure.
Which of the following substances is reabsorbed in the distal convoluted tubule?
Glucose
Na⁺ (Sodium)
Urea
Protein
What is the main function of the collecting duct in the nephron?
Filtration of blood
Reabsorption of water by osmosis
Secretion of hormones
Production of red blood cells
What is the role of the muscular layer in the ureters?
It stores urine
It initiates peristaltic waves to move urine
It filters blood
It produces hormones
Which structure allows urine to move in only one direction into the urinary bladder?
Sphincter muscle
Flap-like fold
Renal artery
Submucous coat
Which of the following is NOT a layer of the urinary bladder?
Mucous coat
Submucous coat
Muscular coat
Cartilaginous coat
What is the function of the urethra?
Stores urine
Filters blood
Carries urine out of the body
Produces urine
Blood is supplied to the kidneys by which blood vessels?
Renal veins
Renal arteries
Pulmonary arteries
Jugular veins
If the renal arteries carry 2.5% of the blood supply to the kidneys each minute, how long does it take to filter the entire blood supply?
5-10 minutes
10-20 minutes
30-40 minutes
60-80 minutes
Why does the submucous coat of the urinary bladder contain many elastic fibers?
To filter urine
To allow the bladder to stretch
To produce hormones
To absorb nutrients
Which layer of the urinary bladder is composed of smooth muscle?
Mucous coat
Submucous coat
Muscular coat
Serous coat
Which of the following substances is present in the plasma but absent in both the glomerular capsule and excreted urine?
Red Blood cells
Sodium (electrolyte)
Glucose (simple sugar)
Urea (metabolic waste)
What is the main reason for the change in composition of urine between the glomerular capsule and the final excreted product?
Tubular reabsorption and tubular secretion
Filtration at the glomerulus only
Active transport of water only
Osmosis in the collecting duct only
According to the table, which substance has a higher concentration in excreted urine than in plasma?
Potassium (electrolyte)
Sodium (electrolyte)
Glucose (simple sugar)
Red Blood cells
If a healthy person’s urine contains no glucose, what does this indicate about the process occurring between the glomerular capsule and urine excretion?
Glucose is completely reabsorbed in the nephron
Glucose is filtered out at the glomerulus and excreted
Glucose is secreted into the urine in the tubules
Glucose is converted into urea
Using the data provided, explain why the concentration of urea increases dramatically from the glomerular capsule to excreted urine.
Urea is reabsorbed less efficiently, so it becomes more concentrated as water is reabsorbed
Urea is filtered out and then completely reabsorbed
Urea is not filtered at the glomerulus
Urea is converted into glucose in the nephron
Which of the following is a characteristic of erythrocytes (red blood cells)?
They have a nucleus.
They are biconcave discs.
They are larger than white blood cells.
They are formed in lymphoid tissue.
What is the primary function of erythrocytes?
Fight infections
Transport oxygen to the cells
Produce antibodies
Clot blood
Where are erythrocytes formed in the body?
Spleen
Liver
Red bone marrow
Lymph nodes
Which hormone produced by the kidneys stimulates red blood cell production?
Insulin
Hemoglobin
Erythropoietin
Adrenaline
What is anemia?
Excess number of RBCs in blood
Reduction in the ability of the blood to carry oxygen
Increase in white blood cells
Blood clotting disorder
Which of the following is NOT a general characteristic of leukocytes (white blood cells)?
Have a nucleus
Larger than RBCs
Fewer in number than RBCs
Carry hemoglobin
What is the function of leukocytes?
Transport oxygen
Fight infections
Clot blood
Carry nutrients
Which type of leukocyte is most abundant and is involved in wound healing and bacterial infections?
Basophils
Eosinophils
Neutrophils
Lymphocytes
Which property allows leukocytes to move independently?
Diapedesis
Chemotaxis
Ameboid movement
Phagocytosis
What is the main function of thrombocytes (platelets)?
Transport oxygen
Fight infections
Blood clotting
Produce antibodies
Explain how the structure of erythrocytes supports their function in the body. (DoK Level 2)
Their biconcave shape increases surface area for gas exchange.
Their nucleus allows them to divide rapidly.
Their large size helps them block pathogens.
Their granules store digestive enzymes.
A patient is diagnosed with polycythemia. Based on your understanding, what does this mean and what could be a possible consequence? (DoK Level 3)
The patient has a low number of RBCs, leading to anemia.
The patient has an excess number of RBCs, which may increase blood viscosity and risk of clotting.
The patient has a high number of WBCs, leading to infection.
The patient has a deficiency in platelets, causing bleeding disorders.
Describe the process and significance of phagocytosis in leukocytes. (DoK Level 2)
It is the process by which leukocytes produce antibodies.
It is the cellular eating process that helps remove pathogens and debris.
It is the movement of leukocytes toward chemicals.
It is the squeezing of leukocytes through capillary pores.
A patient has a low platelet count. Predict the possible effect on hemostasis and justify your answer. (DoK Level 3)
Hemostasis will be enhanced, leading to faster clotting.
Hemostasis will be impaired, increasing the risk of excessive bleeding.
Oxygen transport will be reduced.
The immune response will be stronger.
What is the first step in the process of blood clotting?
Blood vessels spasm
Platelet plug formation
Blood coagulation
Clot retraction
Which protein is released by damaged tissue and platelets to initiate blood coagulation?
Thrombin
Thromboplastin
Fibrin
Plasmin
What is the function of agglutinin (antibody) in blood plasma?
To clump together RBCs
To form blood clots
To attack antigens on RBCs
To dissolve fibrin threads
Which of the following is a genetic defect in the blood clotting pathway?
Embolus
Hemophilia
Serum
Agglutination
Why is Vitamin K important in the blood clotting process?
It is needed for the synthesis of prothrombin by the liver
It helps dissolve blood clots
It forms the fibrin meshwork
It acts as an antibody in plasma
A patient’s blood sample clumps with Anti-A serum but not with Anti-B serum. What is the likely blood type?
Type A
Type B
Type AB
Type O
Explain the difference between agglutinogen (antigen) and agglutinin (antibody) in the context of blood typing.
Agglutinogen is a protein found in plasma, agglutinin is on RBCs
Agglutinogen is a protein found on RBCs, agglutinin is found in plasma
Both are found on RBCs
Both are found in plasma
What happens during clot retraction?
Fibrin meshwork shrinks
Platelets stick to collagen
Blood vessels constrict
Plasmin dissolves the clot
Which enzyme is responsible for dissolving a blood clot a few days after formation?
Thrombin
Fibrin
Plasmin
Thromboplastin
A person with Rh- blood type will have which of the following characteristics?
Antigen D present on RBCs
No antigen D on RBCs
Agglutinin D in plasma
Agglutinogen A in plasma
