MCQs on Human Brain
The human brain is a marvelous organ that has the master control of all the other organs in our body. It has the ability to control almost every facet of the human body ranging from as simple as responding to a needle’s prick to solving the most complex problems. The human brain has got supreme cognitive functionalities which make humans the most evolved species. A human brain works by sending and receiving signals through neurons across various parts of the body.
It is the most complex structure with several folds. Along with the spinal cord, it accounts for a well operated central nervous system.
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Parts of the Human Brain
Several folds of the brain are divided into various compartments. Each compartment performs its designated functions. The different parts of the human brain are:
Forebrain
Midbrain
Hindbrain
The forebrain consists of
Cerebrum, Thalamus, and Hypothalamus, which is why it is also the part that controls thinking and voluntary actions. It is the biggest part associated with higher brain functions and has 4 different lobes. They are:
1. Frontal Lobe – The major function of the frontal lobe is related to cognition and memory.
2. Occipital Lobe – The occipital lobe contains the ‘visual cortex’ and is the visual processing center of the brain.
3. Parietal Lobe – The parietal lobe collects information from our senses and helps in perception of speech, visuals, pain and touch sensations etc.
4. Temporal Lobe – The temporal lobe contains the ‘Hippocampus’ it is at this area where the long-term memory is formed.
The midbrain is a link between the forebrain and the hindbrain. It transmits signals between the midbrain and hindbrain. It is also associated with motor control, vision, hearing, temperature regulation, alertness, etc.
The hindbrain is involved in controlling visceral organs. Thus, it controls the heart rate, breathing, blood pressure, sleep and waking up functions, etc. It is composed of the medulla oblongata, pons, and cerebellum.
Let’s look at some solved MCQs on the human brain for NEET.
MCQs on the Human Brain
1. The Stimulation of a Muscle Fiber by a Motor Neuron occurs at the
a. Myofibril
b. Transverse Tubules
c. Neuromuscular Junction
d. Sarcoplasmic Reticulum
Answer: (c)
2. An injury sustained by the Hypothalamus is most likely to interrupt
a. Coordination During Locomotion
b. Short Term Memory
c. Regulation of Body Temperature
d. Executive Function like Decision Making
Answer: (c)
3. In humans, the Alzheimer Disease is linked with the deficiency of
a. Acetylcholine
b. Dopamine
c. Glutamic Acid
d. Gamma Amino Butyric Acid (GABA)
Answer: (a)
4. A person shows the following symptoms- Outbursts of emotions, unpredictable moods, quarrelsome behavior, conflicts with others, what is the individual suffering from?
a. Disorders related to Mood
b. Disorders related to Addiction
c. Schizophrenia
d. Borderline Personality Disorder (BPD)
Answer: (d)
5. Even after the Brain of a frog has been crushed, it still responds to a pinch on the leg by drawing it away. This act is an example of
a. Conditioned Reflex
b. Simple Reflex
c. Automated Motor Response
d. Neurotransmitter Induced Response
Answer: (b)
6. Which of these functions will be affected if the medulla oblongata is Damaged?
a. Vision
b. Thermoregulation
c. Memory
d. Response when pricked with a needle called Tactile Sensation
Answer: (d)
7. This part of the Human Brain is also referred to as the emotional brain
a. Epithalamus
b. Limbic System
c. Broca’s Area
d. Corpus Callosum
Answer: (b)
8. This is the outermost Cranial Appendage
a. Dura Mater
b. Pia Mater
c. Skull
d. Arachnoid
Answer: (a)
9. This Cranial Meninges is in close proximity of the brain tissue
a. Dura Mater
b. Pia Mater
c. Arachnoid
d. Skull Tissue
Answer: (b)
10. This statement is not associated with Midbrain
a. The central portion of the midbrain is composed of mainly four, round swellings known as corpora quadrigemina.
b. Located between the thalamus of the forebrain and pons of the hindbrain.
c. The canal called the cerebral aqueduct passes through the midbrain.
d. Hindbrain and midbrain constitute the brain stem
Answer: (a)
11. Which of the following is not a component of a Neuron?
a. Hydrocephalus
b. Terminal Buttons
c. Dendrites
d. Myelin Sheath
Answer: (a)
12. Which part of the brain is primarily responsible for production of Speech?
a. Substantia Nigra
b. Basal Ganglia
c. Thalamus
d. Broca Area
Answer: (d)
13. Which of the following is not a part of the Brainstem?
a. Medulla Oblongata
b. Cerebellum
c. Mid Brains
d. Pons
Answer: (b)
14. What is the function of the Cerebral Aqueduct?
a. To release hormones into the blood
b. To connect the cerebellum to the spinal cord
c. To control involuntary functions
d. To provide a pathway for cerebrospinal fluid inside the brain
Answer: (d)
15. Which part of the brain controls the Pituitary Gland?
a. Hindbrain
b. Hypothalamus
c. Hippocampus
d. Midbrain
Answer: (b)
16. Which of the following cells provide nourishment to the Neurons?
a. Glea
b. Fovia
c. Ions
d. Mitochondria
Answer: (a)
17 Which is the process involving the Reabsorption of Neurotransmitters within a synapse for later use?
a. Cognition
b. Reuptake
c. Phylogeny
d. Apoptosis
Answer: (b)
18. Which one of the following is the primary function of Occipital Lobe?
a. Regulation of the hunger drive
b. Reception of visual impulses
c. Regulation of sleep cycle
d. Reception of touch senses
Answer: (b)
19. Which of the following is not a part of the Brain?
a. Cerebellum
b. Brain Stem
c. Foramen Magnum
d. Cerebrum
Answer: (c)
20. Which part of the Brain moves the right side of your Body?
a. Left Parietal Lobe
b. Left Frontal Lobe
c. Right Temporal Lobe
d. Right Frontal Lobe
Answer: (b)
21. At what age does the human brain become fully formed?
a. 21
b. 26
c. 25
d. 18
Answer: c
22. How many neurons does the human brain contain?
a. 1 hundred billion neurons
b. 1 hundred million neurons
c. 3 thousand million neurons
d. 1 thousand million neurons
Answer: (a) 1 hundred billion neurons
23. After the middle age, human brain gets
a. bigger with age
b. smaller with age
c. remains same
d. none of the above
Answer: (b) smaller with age
24. How much (%) of the oxygen and blood in the human body is used by the brain?
a. 45%
b. 10%
c. 50%
d. 20%
Answer: (d)
25. High Cholesterol level can lead to
a. high blood pressure
b. anxiety
c. blood clot
d. fever
Answer: (c)
26. From where the brain was being removed during the mummification process in the old times?
a. through the neck
b. through the nose
c. through the ears
d. through the eyes
Answer: (b)
FAQs on MCQs on Human Brain for NEET 2024
1. What is the weight of the adult human brain?
The brain is the most complex part of our body. It is responsible for problem solving, instructing other body parts related to movement and helps the human body to become responsive. All the instructions related to human body activity are processed in the brain. A newborn child's human brain weighs around 1 pound (453 grams) and as the body grows, the weight and size of the brain also increases. During the elementary school age, the brain grows to become 2 pounds (approx 900 grams) in weight. When the human body comes to the adult state, the weight of the brain reaches to 3 pounds which is equal to 1.3 kg approx. Just like the human body, which is 70% water, the human brain is 80% water and the remaining 20% consist of fats and proteins, carbohydrates, minerals etc (10% fats and 10% of other biomolecules). The brain consists of soft gelatin throughout its structure. At a time, 6 ounces (equivalent to 3 cans of soda) of blood flows through the human brain and circulates to the rest of the body parts through the nervous system.
2. What happens when one side of the human brain gets damaged? Does it affect the other side also?
The human brain has 2 hemispheres. Each side of the brain controls and functions the opposite side of the body parts. That is, the left part of the brain is responsible for the movement and working of the right side of the human body. In case, if one side of the brain gets damaged due to some injury, it will lead to dysfunction in the parts of the opposite side of the human body. The damage in one side of the brain doesn't affect the other side unless the injury is very serious. In cases of blood clots, the hemisphere containing blood clots is only affected while the other half of the brain is not disturbed.
3. Is creativity related to the working of the brain? If yes, how?
Yes, creativity is related to the proper working of the brain. The brain stores information and memories for months or even years. This information is termed as experience if it is about a particular topic or subject. Hence, the memory of the brain leads to creativity. When a human brain memorizes a task, the efficiency of doing the work increases. Along with this, fast working of the brain contributes to creative thinking. This is because the brain is able to think about a wide aspect related to the particular topic, which leads to productivity of new and creative thoughts. Therefore, the speed and memory of the brain are directly related to the creativity level of the brain. Dreams (while sleeping) are also an example of the creativity of the brain.
4. Does the brain slow down with increase in age?
Yes, the brain started to slow with the increase in age. It is because of the flow of blood in the brain. As the human age increases, the flow of blood starts to slow down. This leads to low blood pressure. This is a fact that the brain works when blood is circulated through it. Therefore, low blood pressure leads to slow working of the brain. In cases of extreme slow flow of blood, formation of blood clots can take place. This can stop the brain from functioning and also stops other activities of the human body.
5. How is the human brain responsible for the sensation of pain in the human body?
The human brain is connected to the nervous system that carries the blood throughout the human body. Along with this, there are muscles throughout the human body which have pain sensing ability. With the help of these body parts, the brain identifies the force exerted on the human body and after the circulation of blood through the brain, signals are sent to the parts of the body. The parts where signals are sent experience the sensation of pain. The pain experienced by the brain is termed a headache.