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Circulatory and Excretory System mcq for NEET. We covered all the Circulatory and Excretory System mcq for NEET in this post for free so that you can practice well for the exam.
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Circulatory and Excretory System mcq for NEET Students
In humans, the kidneys are responsible for filtering waste products. The kidneys contain numerous filtration units that perform this function. These units are called:
A) Bowman’s capsules
B) Capillaries
C) Nephrons
D) Alveoli
Option c – Nephrons
Which specialised excretory cell in Platyhelminthes functions like a kidney to remove waste?
A) Fat cell
B) Flame cell
C) Stem cell
D) Sponge cell
Option b – Flame cell
Which compound gives urine its yellow color?
A) Bilirubin
B) Urobilin
C) Albumin
D) Creatinine
Option b – Urobilin
Which of the following serves as an excretory organ in humans?
A) Heart
B) Skin
C) Brain
D) Muscles
Option b – Skin
Which organ is paired and present on both sides of the human body?
A) Liver
B) Spleen
C) Bladder
D) Kidney
Option d – Kidney
Sweating in humans primarily helps in:
A) Eliminating excess Salt
B) Repelling insects through sweat odor
C) Removing excess water
D) Regulating body temperature
Option d – Regulating body temperature
Regarding kidney function, which statement is incorrect?
A) They balance water and remove metabolic waste
B) Reptiles have more nephrons than birds
C) Each nephron consists of a glomerulus and a renal tubule
D) Nephrons are the functional units of the kidney
Option b – Reptiles have more nephrons than birds
Which organ is mainly responsible for removing nitrogenous wastes from the body?
A) Kidneys
B) Liver
C) Pancreas
D) Lungs
Option a – Kidneys
Dialysis is required when which organ is damaged or fails to function properly?
A) Kidneys
B) Liver
C) Heart
D) Stomach
Option a – Kidneys
Where is urine stored before it is excreted from the body?
A) Bowman’s capsule
B) Ureter
C) Urinary bladder
D) Urethra
Option c – Urinary bladder
In human double circulation, which statement is correct?
A) Oxygen-rich blood enters the left side of the heart from the lungs
B) Blood in the left side of the heart is oxygen-poor and moves to the right side
C) Deoxygenated blood from the left side goes to the lungs for oxygenation
D) Oxygenated blood from the right side is pumped throughout the body
Option a – Oxygen-rich blood enters the left side of the heart from the lungs
In a normal human, blood pressure is 120/80 mmHg. These values indicate:
A) Systolic (ventricular contraction) and diastolic (ventricular relaxation) pressures
B) Diastolic (ventricular relaxation) and systolic (ventricular contraction) pressures
C) Auricular contraction and relaxation pressures
D) Systolic (ventricular contraction) and auricular contraction pressures
Option a – Systolic (ventricular contraction) and diastolic (ventricular relaxation) pressures
The pulse is generated due to the rhythmic contraction and relaxation of:
A) Vein valves
B) Heart chambers
C) Heart valves
D) Aorta and main arteries
Option d – Aorta and main arteries
Which substance is naturally produced in humans to dilate blood vessels and increase circulation?
A) Nitrous oxide
B) Nitric oxide
C) Nitrogen pentoxide
D) Nitrogen dioxide
Option b – Nitric oxide
The normal pH of human blood is:
A) 7.0
B) 6.8
C) 7.4
D) 6.4
Option c – 7.4
Arteries are blood vessels that:
A) Carry oxygen-rich blood
B) Carry oxygen-poor blood
C) Have thin, non-elastic walls
D) Transport blood away from the heart
Option d – Transport blood away from the heart
Which part of the nephron is responsible for blood filtration?
A) Renal vein
B) Collecting duct
C) Bowman’s capsule
D) Ureter
Option c – Bowman’s capsule
Which device is used for manually measuring blood pressure?
A) Centrifuge
B) Sphygmomanometer
C) Thermal cycler
D) Electrophoresis
Option b – Sphygmomanometer
The normal systolic blood pressure in humans is:
A) 80 mm Hg
B) 100 mm Hg
C) 140 mm Hg
D) 120 mm Hg
Option d – 120 mm Hg
Which type of blood vessels carry oxygen-rich blood from the heart to the rest of the body?
A) Tracheae
B) Veins
C) Plasma
D) Arteries
Option d – Arteries
Which vessels Transport carbon dioxide-rich blood back to the heart?
A) Arteries
B) Veins
C) Neurons
D) Capillaries
Option b – Veins
Another name for blood platelets is:
A) Leucocytes
B) Thrombin
C) Thrombocytes
D) Erythrocytes
Option c – Thrombocytes
Which substance is responsible for the red color of blood?
A) Chlorophyll
B) Haemoglobin
C) Ferritin
D) Xanthophyll
Option b – Haemoglobin
The typical pH of human blood is:
A) 7.4
B) 5.8
C) 10
D) 6.5
Option a – 7.4
Which mineral is required for the synthesis of hemoglobin?
A) Protein
B) Iron
C) Calcium
D) Fats
Option b – Iron
Which of the following is not a blood cell produced in bone marrow?
A) Red blood cells
B) Osteoclasts
C) Platelets
D) White blood cells
Option b – Osteoclasts
Lymph is a clear Fluid containing white blood cells that defend the body against:
A) Bacteria
B) Fungi
C) Protozoa
D) Viruses
Option a – Bacteria
Which organ is a large bean-shaped lymphoid structure in humans?
A) Tonsil
B) Spleen
C) Thymus
D) Lymph node
Option b – Spleen
Which of these statements correctly describes normal human blood pressure?
A) Systolic ~80 mmHg, diastolic ~120 mmHg
B) Systolic ~72 mmHg, diastolic ~35 mmHg
C) Systolic ~160 mmHg, diastolic ~80 mmHg
D) Systolic ~120 mmHg, diastolic ~80 mmHg
Option d – Systolic ~120 mmHg, diastolic ~80 mmHg
Swollen bluish veins caused by malfunctioning valves are called:
A) Systemic veins
B) Varicose veins
C) Deep veins
D) Superficial veins
Option b – Varicose veins
Which reptile has a completely divided four-chambered heart?
A) Snake
B) Turtle
C) Crocodile
D) Lizard
Option c – Crocodile
How much hemoglobin is normally present in 1 ml of human blood?
A) 100
B) 1000
C) 12–16 grams
D) 10000
Option a – 100
Which blood group is considered the universal receiver?
A) AB+
B) O+
C) A+
D) B+
Option a – AB+
The sino-atrial node, which regulates heartbeat, is located in the:
A) Heart
B) Stomach
C) Brain
D) Bladder
Option a – Heart
Which organ is responsible for producing red blood cells?
A) Bone marrow
B) Heart
C) Lungs
D) Brain
Option a – Bone marrow
How does the human body adapt to high altitudes with low oxygen pressure?
A) Decrease red blood cell production, reduce hemoglobin affinity, increase breathing rate
B) Increase red blood cell production, reduce hemoglobin affinity, increase breathing rate
C) Hibernate
D) Increase white blood cell production, reduce hemoglobin affinity, increase breathing rate
Option b – Increase red blood cell production, reduce hemoglobin affinity, increase breathing rate
Blood clot formation is caused by which type of cell?
A) Erythrocytes
B) Lymphocytes
C) Platelets
D) Chondrocytes
Option c – Platelets
Which blood component protects the body against infections?
A) RBC
B) Platelets
C) WBC
D) Hemoglobin
Option c – WBC
The process of blood clot formation is called:
A) Coagulation
B) Thrombocytopenia
C) Haemophilia
D) Homophobia
Option a – Coagulation
Which device is used to measure blood pressure manually?
A) Spectrophotometer
B) Haemoglobinmeter
C) Sphygmomanometer
D) Urinometer
Option c – Sphygmomanometer
What is the main function of the excretory system in animals?
A) Removing metabolic waste
B) Respiration
C) Digestion
D) Reproduction
Option a – Removing metabolic waste
We covered all the Circulatory and Excretory System mcq for NEET above in this post for free so that you can practice well for the exam.
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