Physiology MCQ & Objective Questions
Understanding Physiology is crucial for students preparing for school exams and competitive tests in India. This subject not only forms the backbone of biological sciences but also plays a significant role in scoring well in exams. Practicing MCQs and objective questions in Physiology helps reinforce key concepts, making it easier to tackle important questions during your exam preparation.
What You Will Practise Here
Cell Structure and Function
Human Body Systems: Circulatory, Respiratory, and Digestive
Homeostasis and Regulation Mechanisms
Neurophysiology: Nerve Impulses and Synaptic Transmission
Muscle Physiology: Types of Muscles and Their Functions
Endocrine System: Hormones and Their Effects
Physiological Measurements and Techniques
Exam Relevance
Physiology is a vital topic in various examinations such as CBSE, State Boards, NEET, and JEE. Students can expect questions that assess their understanding of fundamental concepts, often presented in the form of diagrams, definitions, and application-based scenarios. Common question patterns include multiple-choice questions that require not only rote memorization but also conceptual clarity to solve effectively.
Common Mistakes Students Make
Confusing the functions of different body systems.
Overlooking the importance of diagrams in understanding physiological processes.
Misinterpreting questions that require application of concepts rather than direct recall.
Neglecting the role of feedback mechanisms in homeostasis.
FAQs
Question: What are some effective ways to prepare for Physiology MCQs?Answer: Regular practice of MCQs, reviewing key concepts, and understanding diagrams can significantly enhance your preparation.
Question: How can I improve my understanding of complex physiological processes?Answer: Breaking down processes into simpler steps and using visual aids can help clarify complex concepts.
Take charge of your exam preparation by solving practice MCQs in Physiology. This will not only test your understanding but also boost your confidence for the exams ahead. Start practicing today and excel in your studies!
Q. Which of the following factors primarily influences heart rate?
A.
Blood pressure
B.
Sympathetic nervous system activity
C.
Respiratory rate
D.
Body temperature
Show solution
Solution
Heart rate is primarily influenced by sympathetic nervous system activity, which increases heart rate during stress or exercise.
Correct Answer:
B
— Sympathetic nervous system activity
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Q. Which of the following is a characteristic of a balanced diet?
A.
High in saturated fats
B.
Low in carbohydrates
C.
Includes a variety of food groups
D.
Excludes fruits and vegetables
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Solution
A balanced diet includes a variety of food groups to ensure adequate intake of essential nutrients.
Correct Answer:
C
— Includes a variety of food groups
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Q. Which of the following is a consequence of renal failure?
A.
Increased urine output
B.
Decreased blood urea nitrogen levels
C.
Fluid retention
D.
Increased electrolyte excretion
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Solution
Fluid retention is a common consequence of renal failure due to the kidneys' inability to excrete excess fluid and waste.
Correct Answer:
C
— Fluid retention
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Q. Which of the following is a function of the endothelium in blood vessels?
A.
To produce red blood cells
B.
To regulate vascular tone
C.
To store nutrients
D.
To initiate blood clotting
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Solution
The endothelium plays a crucial role in regulating vascular tone and maintaining homeostasis in the cardiovascular system.
Correct Answer:
B
— To regulate vascular tone
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Q. Which of the following is a function of the integumentary system?
A.
Protection
B.
Temperature regulation
C.
Sensation
D.
All of the above
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Solution
The integumentary system serves multiple functions including protection, temperature regulation, and sensation.
Correct Answer:
D
— All of the above
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Q. Which of the following is a function of the liver?
A.
Detoxification of harmful substances
B.
Production of insulin
C.
Storage of oxygen
D.
Regulation of heart rate
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Solution
The liver detoxifies harmful substances, metabolizes drugs, and produces bile, among other functions.
Correct Answer:
A
— Detoxification of harmful substances
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Q. Which of the following is a key component of the epidemiological triangle?
A.
Agent
B.
Treatment
C.
Diagnosis
D.
Prevention
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Solution
The epidemiological triangle consists of three components: agent, host, and environment.
Correct Answer:
A
— Agent
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Q. Which of the following is a key component of the feedback mechanism in homeostasis?
A.
Stimulus
B.
Response
C.
Control center
D.
All of the above
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Solution
A feedback mechanism in homeostasis includes a stimulus, a control center that processes the information, and a response that acts to restore balance.
Correct Answer:
D
— All of the above
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Q. Which of the following is a key regulatory mechanism for maintaining homeostasis in the gastrointestinal system?
A.
Negative feedback loops
B.
Positive feedback loops
C.
Hormonal regulation
D.
All of the above
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Solution
All of the above mechanisms play a role in maintaining homeostasis in the gastrointestinal system, ensuring proper digestion and nutrient absorption.
Correct Answer:
D
— All of the above
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Q. Which of the following is a measure of disease frequency?
A.
Relative risk
B.
Odds ratio
C.
Prevalence rate
D.
Attributable risk
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Solution
Prevalence rate indicates how many individuals in a population have a specific disease at a given time.
Correct Answer:
C
— Prevalence rate
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Q. Which of the following is a mechanism of renal autoregulation?
A.
Tubuloglomerular feedback
B.
Hormonal regulation
C.
Sympathetic nervous system activation
D.
Increased heart rate
Show solution
Solution
Tubuloglomerular feedback is a mechanism of renal autoregulation that helps maintain a constant glomerular filtration rate despite changes in blood pressure.
Correct Answer:
A
— Tubuloglomerular feedback
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Q. Which of the following is a primary function of the endocrine system?
A.
Transporting nutrients
B.
Regulating metabolism
C.
Providing structural support
D.
Facilitating movement
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Solution
The endocrine system regulates metabolism through the release of hormones that influence various bodily functions.
Correct Answer:
B
— Regulating metabolism
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Q. Which of the following is a primary function of the respiratory system?
A.
Transporting nutrients
B.
Gas exchange
C.
Hormone production
D.
Waste elimination
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Solution
The primary function of the respiratory system is gas exchange, allowing oxygen to enter the blood and carbon dioxide to be expelled.
Correct Answer:
B
— Gas exchange
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Q. Which of the following is an example of a polysynaptic reflex?
A.
Knee-jerk reflex
B.
Withdrawal reflex
C.
Blink reflex
D.
Stretch reflex
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Solution
The withdrawal reflex is an example of a polysynaptic reflex, involving multiple synapses and interneurons.
Correct Answer:
B
— Withdrawal reflex
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Q. Which of the following is an example of a vector-borne disease?
A.
Influenza
B.
Malaria
C.
Tuberculosis
D.
Diabetes
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Solution
Malaria is transmitted by mosquitoes, making it a vector-borne disease.
Correct Answer:
B
— Malaria
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Q. Which of the following is NOT a function of the endocrine system?
A.
Regulating metabolism
B.
Controlling growth and development
C.
Facilitating voluntary muscle movement
D.
Maintaining homeostasis
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Solution
The endocrine system regulates various bodily functions, but it does not control voluntary muscle movement, which is managed by the nervous system.
Correct Answer:
C
— Facilitating voluntary muscle movement
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Q. Which of the following is NOT a function of the integumentary system?
A.
Protection against pathogens
B.
Regulation of body temperature
C.
Production of insulin
D.
Sensation
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Solution
The integumentary system does not produce insulin; that function is performed by the pancreas.
Correct Answer:
C
— Production of insulin
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Q. Which organ is primarily responsible for detoxifying harmful substances in the body?
A.
Kidney
B.
Liver
C.
Pancreas
D.
Spleen
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Solution
The liver plays a key role in detoxifying harmful substances, metabolizing drugs, and processing nutrients.
Correct Answer:
B
— Liver
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Q. Which organ is primarily responsible for filtering blood and producing urine?
A.
Liver
B.
Heart
C.
Kidney
D.
Lungs
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Solution
The kidneys filter blood and produce urine as part of the body's waste management system.
Correct Answer:
C
— Kidney
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Q. Which organ is primarily responsible for maintaining homeostasis of blood glucose levels?
A.
Liver
B.
Kidneys
C.
Pancreas
D.
Heart
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Solution
The pancreas plays a crucial role in maintaining homeostasis of blood glucose levels by secreting insulin and glucagon.
Correct Answer:
C
— Pancreas
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Q. Which organ is primarily responsible for regulating blood volume?
A.
Heart
B.
Liver
C.
Kidneys
D.
Lungs
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Solution
The kidneys play a crucial role in regulating blood volume by controlling the excretion of water and electrolytes.
Correct Answer:
C
— Kidneys
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Q. Which organ is primarily responsible for the absorption of nutrients?
A.
Stomach
B.
Liver
C.
Small intestine
D.
Large intestine
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Solution
The small intestine is primarily responsible for the absorption of nutrients from digested food.
Correct Answer:
C
— Small intestine
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Q. Which organ is primarily responsible for the detoxification of drugs?
A.
Heart
B.
Liver
C.
Lungs
D.
Kidneys
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Solution
The liver is the main organ responsible for detoxifying drugs and other harmful substances in the body.
Correct Answer:
B
— Liver
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Q. Which organ system is primarily responsible for gas exchange in the body?
A.
Circulatory system
B.
Respiratory system
C.
Digestive system
D.
Nervous system
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Solution
The respiratory system is responsible for gas exchange, allowing oxygen to enter the blood and carbon dioxide to be expelled.
Correct Answer:
B
— Respiratory system
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Q. Which organ system is primarily responsible for maintaining homeostasis of body temperature?
A.
Nervous system
B.
Endocrine system
C.
Integumentary system
D.
Muscular system
Show solution
Solution
The integumentary system, including the skin, plays a crucial role in thermoregulation and maintaining body temperature.
Correct Answer:
C
— Integumentary system
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Q. Which organ system is primarily responsible for the regulation of body temperature?
A.
Nervous system
B.
Endocrine system
C.
Integumentary system
D.
Muscular system
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Solution
The integumentary system, including the skin, plays a crucial role in regulating body temperature through mechanisms such as sweating and blood flow.
Correct Answer:
C
— Integumentary system
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Q. Which part of the brain is primarily responsible for regulating breathing?
A.
Cerebrum
B.
Cerebellum
C.
Medulla oblongata
D.
Thalamus
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Solution
The medulla oblongata is the part of the brain that regulates the rhythm and rate of breathing.
Correct Answer:
C
— Medulla oblongata
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Q. Which part of the brain is primarily responsible for the control of respiration?
A.
Cerebrum
B.
Cerebellum
C.
Medulla oblongata
D.
Thalamus
Show solution
Solution
The medulla oblongata is the part of the brain that controls the rhythm and rate of breathing.
Correct Answer:
C
— Medulla oblongata
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Q. Which part of the brain is responsible for maintaining body temperature?
A.
Cerebellum
B.
Hypothalamus
C.
Medulla oblongata
D.
Cerebrum
Show solution
Solution
The hypothalamus is the part of the brain that regulates body temperature by initiating responses such as sweating or shivering.
Correct Answer:
B
— Hypothalamus
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Q. Which part of the brain is responsible for regulating body temperature?
A.
Cerebellum
B.
Hypothalamus
C.
Medulla oblongata
D.
Cerebrum
Show solution
Solution
The hypothalamus plays a crucial role in thermoregulation by maintaining the body's temperature set point.
Correct Answer:
B
— Hypothalamus
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