Neurobiology MCQs with Answers
Which of the following is the basic functional unit of the nervous system?
a) Neuron
b) Neurotransmitter
c) Synapse
d) Glial cell
Answer: a) Neuron
Which part of the neuron receives signals from other neurons?
a) Axon
b) Dendrite
c) Cell body
d) Myelin sheath
Answer: b) Dendrite
The electrical signal that travels along the axon of a neuron is called:
a) Action potential
b) Resting potential
c) Synaptic transmission
d) Graded potential
Answer: a) Action potential
Neurotransmitters are released from the axon terminals into the:
a) Synaptic cleft
b) Dendrites
c) Cell body
d) Myelin sheath
Answer: a) Synaptic cleft
The process by which a neuron receives, integrates, and transmits information is called:
a) Synaptic transmission
b) Neurotransmission
c) Action potential
d) Signal transduction
Answer: b) Neurotransmission
Which of the following is the main inhibitory neurotransmitter in the central nervous system?
a) Glutamate
b) Acetylcholine
c) Serotonin
d) Gamma-aminobutyric acid (GABA)
Answer: d) Gamma-aminobutyric acid (GABA)
The myelin sheath is primarily composed of:
a) Axons
b) Dendrites
c) Glial cells
d) Neurotransmitters
Answer: c) Glial cells
Which part of the brain is responsible for controlling voluntary movements and motor coordination?
a) Cerebrum
b) Cerebellum
c) Brainstem
d) Thalamus
Answer: b) Cerebellum
The part of the neuron that transmits the electrical signal away from the cell body is the:
a) Axon
b) Dendrite
c) Synapse
d) Myelin sheath
Answer: a) Axon
Which of the following is responsible for coordinating involuntary functions such as breathing and heartbeat?
a) Cerebrum
b) Cerebellum
c) Brainstem
d) Thalamus
Answer: c) Brainstem
The process by which the strength of a synaptic connection is modified based on neural activity is called:
a) Synaptic transmission
b) Synaptic plasticity
c) Action potential
d) Graded potential
Answer: b) Synaptic plasticity
Which neurotransmitter is associated with reward and pleasure in the brain?
a) Dopamine
b) Serotonin
c) Acetylcholine
d) Norepinephrine
Answer: a) Dopamine
The part of the brain responsible for higher cognitive functions, such as thinking and problem-solving, is the:
a) Cerebrum
b) Cerebellum
c) Brainstem
d) Thalamus
Answer: a) Cerebrum
The gap between two neurons where neurotransmitters are released is called the:
a) Synaptic cleft
b) Dendrite
c) Cell body
d) Myelin sheath
Answer: a) Synaptic cleft
Which of the following is a major excitatory neurotransmitter in the central nervous system?
a) Glutamate
b) Acetylcholine
c) Serotonin
d) Gamma-aminobutyric acid (GABA)
Answer: a) Glutamate
The part of the brain that relays sensory information to the cerebral cortex is the:
a) Cerebrum
b) Cerebellum
c) Brainstem
d) Thalamus
Answer: d) Thalamus
Which of the following is involved in the formation and consolidation of new memories?
a) Hippocampus
b) Amygdala
c) Hypothalamus
d) Pituitary gland
Answer: a) Hippocampus
Which of the following is a type of glial cell that produces myelin in the central nervous system?
a) Astrocyte
b) Microglia
c) Oligodendrocyte
d) Schwann cell
Answer: c) Oligodendrocyte
The part of the brain involved in regulating body temperature, hunger, and thirst is the:
a) Hypothalamus
b) Amygdala
c) Hippocampus
d) Pituitary gland
Answer: a) Hypothalamus
Which of the following is responsible for coordinating visual information in the brain?
a) Occipital lobe
b) Temporal lobe
c) Parietal lobe
d) Frontal lobe
Answer: a) Occipital lobe
The part of the brain involved in regulating emotions, especially fear and aggression, is the:
a) Hypothalamus
b) Amygdala
c) Hippocampus
d) Pituitary gland
Answer: b) Amygdala
The division of the peripheral nervous system that controls voluntary movements is the:
a) Somatic nervous system
b) Autonomic nervous system
c) Sympathetic nervous system
d) Parasympathetic nervous system
Answer: a) Somatic nervous system
Which of the following is responsible for regulating sleep and wakefulness?
a) Hypothalamus
b) Amygdala
c) Pineal gland
d) Pituitary gland
Answer: c) Pineal gland
The part of the brain involved in language processing and speech production is the:
a) Occipital lobe
b) Temporal lobe
c) Parietal lobe
d) Frontal lobe
Answer: d) Frontal lobe
Which of the following is responsible for regulating the body’s response to stress?
a) Hypothalamus
b) Amygdala
c) Adrenal gland
d) Pituitary gland
Answer: c) Adrenal gland
The division of the peripheral nervous system that controls involuntary functions is the:
a) Somatic nervous system
b) Autonomic nervous system
c) Sympathetic nervous system
d) Parasympathetic nervous system
Answer: b) Autonomic nervous system
Which of the following is responsible for regulating body balance and coordination?
a) Hypothalamus
b) Amygdala
c) Cerebellum
d) Pituitary gland
Answer: c) Cerebellum
The part of the brain involved in spatial navigation and memory formation is the:
a) Hippocampus
b) Amygdala
c) Hypothalamus
d) Pituitary gland
Answer: a) Hippocampus
Which of the following is a type of glial cell that removes debris and pathogens in the central nervous system?
a) Astrocyte
b) Microglia
c) Oligodendrocyte
d) Schwann cell
Answer: b) Microglia
The part of the brain responsible for processing auditory information is the:
a) Occipital lobe
b) Temporal lobe
c) Parietal lobe
d) Frontal lobe
Answer: b) Temporal lobe
Which of the following is responsible for regulating hormone release from the endocrine glands?
a) Hypothalamus
b) Amygdala
c) Pineal gland
d) Pituitary gland
Answer: d) Pituitary gland
The part of the brain that controls voluntary movement, decision-making, and problem-solving is the:
a) Occipital lobe
b) Temporal lobe
c) Parietal lobe
d) Frontal lobe
Answer: d) Frontal lobe
Which of the following is a technique used to study brain activity by measuring changes in blood flow?
a) Electroencephalography (EEG)
b) Positron emission tomography (PET)
c) Magnetic resonance imaging (MRI)
d) Computed tomography (CT)
Answer: b) Positron emission tomography (PET)
The part of the brain involved in regulating circadian rhythms and melatonin production is the:
a) Hypothalamus
b) Amygdala
c) Pineal gland
d) Pituitary gland
Answer: c) Pineal gland
The communication between neurons occurs through:
a) Electrical signals
b) Chemical signals
c) Both electrical and chemical signals
d) None of the above
Answer: c) Both electrical and chemical signals
Which of the following is responsible for regulating body temperature and hunger?
a) Hypothalamus
b) Amygdala
c) Cerebellum
d) Pituitary gland
Answer: a) Hypothalamus
The part of the brain responsible for processing sensory information is the:
a) Occipital lobe
b) Temporal lobe
c) Parietal lobe
d) Frontal lobe
Answer: c) Parietal lobe
Which of the following is responsible for regulating emotions and memory formation?
a) Hippocampus
b) Amygdala
c) Hypothalamus
d) Pituitary gland
Answer: b) Amygdala
The part of the neuron that insulates and speeds up the conduction of electrical signals is the:
a) Axon
b) Dendrite
c) Synapse
d) Myelin sheath
Answer: d) Myelin sheath
Which of the following is responsible for regulating hormone release from the thyroid gland?
a) Hypothalamus
b) Amygdala
c) Thyroid gland
d) Pituitary gland
Answer: d) Pituitary gland
The process by which new neurons are generated in the brain is called:
a) Synaptic transmission
b) Neurogenesis
c) Action potential
d) Graded potential
Answer: b) Neurogenesis
Which of the following is responsible for regulating breathing and heart rate?
a) Hypothalamus
b) Amygdala
c) Medulla oblongata
d) Pituitary gland
Answer: c) Medulla oblongata
The part of the brain responsible for processing tactile and spatial information is the:
a) Occipital lobe
b) Temporal lobe
c) Parietal lobe
d) Frontal lobe
Answer: c) Parietal lobe
Which of the following is responsible for regulating the body’s response to danger or stress?
a) Hypothalamus
b) Amygdala
c) Adrenal gland
d) Pituitary gland
Answer: b) Amygdala
The process by which the strength of a synaptic connection is modified based on neural activity is called:
a) Synaptic transmission
b) Synaptic plasticity
c) Action potential
d) Graded potential
Answer: b) Synaptic plasticity
Which of the following is responsible for regulating mood, appetite, and sleep?
a) Hypothalamus
b) Amygdala
c) Cerebellum
d) Pituitary gland
Answer: b) Amygdala
The part of the brain responsible for regulating hormone release from the adrenal glands is the:
a) Hypothalamus
b) Amygdala
c) Adrenal gland
d) Pituitary gland
Answer: d) Pituitary gland
Which of the following is responsible for regulating muscle coordination and balance?
a) Hypothalamus
b) Amygdala
c) Cerebellum
d) Pituitary gland
Answer: c) Cerebellum
The part of the brain involved in regulating the autonomic nervous system is the:
a) Hypothalamus
b) Amygdala
c) Thalamus
d) Pituitary gland
Answer: a) Hypothalamus
Which of the following is responsible for regulating hormone release from the ovaries and testes?
a) Hypothalamus
b) Amygdala
c) Ovaries
d) Pituitary gland
Answer: d) Pituitary gland
The part of the brain responsible for processing visual information is the:
a) Occipital lobe
b) Temporal lobe
c) Parietal lobe
d) Frontal lobe
Answer: a) Occipital lobe
Which of the following is responsible for regulating hormone release from the pancreas?
a) Hypothalamus
b) Amygdala
c) Pancreas
d) Pituitary gland
Answer: d) Pituitary gland
The process by which electrical signals travel along the axon of a neuron is called:
a) Synaptic transmission
b) Neurotransmission
c) Action potential
d) Graded potential
Answer: c) Action potential
Which of the following is responsible for regulating hormone release from the adrenal glands?
a) Hypothalamus
b) Amygdala
c) Adrenal gland
d) Pituitary gland
Answer: d) Pituitary gland
The part of the brain responsible for processing language and auditory information is the:
a) Occipital lobe
b) Temporal lobe
c) Parietal lobe
d) Frontal lobe
Answer: b) Temporal lobe
Which of the following is responsible for regulating hormone release from the thyroid gland?
a) Hypothalamus
b) Amygdala
c) Thyroid gland
d) Pituitary gland
Answer: d) Pituitary gland
The part of the brain responsible for processing sensory information and spatial awareness is the:
a) Occipital lobe
b) Temporal lobe
c) Parietal lobe
d) Frontal lobe
Answer: c) Parietal lobe
Which of the following is responsible for regulating hormone release from the pituitary gland?
a) Hypothalamus
b) Amygdala
c) Adrenal gland
d) Pituitary gland
Answer: a) Hypothalamus
The part of the brain responsible for regulating sleep and wakefulness is the:
a) Hypothalamus
b) Amygdala
c) Pineal gland
d) Pituitary gland
Answer: c) Pineal gland
Which of the following is responsible for regulating hormone release from the pineal gland?
a) Hypothalamus
b) Amygdala
c) Pineal gland
d) Pituitary gland
Answer: d) Pituitary gland
The process by which a neuron receives and integrates signals from other neurons is called:
a) Synaptic transmission
b) Neurotransmission
c) Action potential
d) Synaptic integration
Answer: d) Synaptic integration
Which of the following is responsible for regulating hormone release from the hypothalamus?
a) Hypothalamus
b) Amygdala
c) Thalamus
d) Pituitary gland
Answer: a) Hypothalamus
The part of the brain responsible for regulating voluntary movements and motor coordination is the:
a) Cerebrum
b) Cerebellum
c) Brainstem
d) Thalamus
Answer: b) Cerebellum
Which of the following is responsible for regulating hormone release from the adrenal glands?
a) Hypothalamus
b) Amygdala
c) Adrenal gland
d) Pituitary gland
Answer: d) Pituitary gland
The part of the brain responsible for processing visual information and spatial awareness is the:
a) Occipital lobe
b) Temporal lobe
c) Parietal lobe
d) Frontal lobe
Answer: c) Parietal lobe
Which of the following is responsible for regulating hormone release from the ovaries and testes?
a) Hypothalamus
b) Amygdala
c) Ovaries
d) Pituitary gland
Answer: d) Pituitary gland
The part of the brain responsible for processing language and speech production is the:
a) Occipital lobe
b) Temporal lobe
c) Parietal lobe
d) Frontal lobe
Answer: d) Frontal lobe
Which of the following is responsible for regulating hormone release from the pancreas?
a) Hypothalamus
b) Amygdala
c) Pancreas
d) Pituitary gland
Answer: d) Pituitary gland
The part of the brain responsible for regulating emotions, memory formation, and reward is the:
a) Hippocampus
b) Amygdala
c) Hypothalamus
d) Pituitary gland
Answer: b) Amygdala
Which of the following is responsible for regulating hormone release from the thyroid gland?
a) Hypothalamus
b) Amygdala
c) Thyroid gland
d) Pituitary gland
Answer: d) Pituitary gland