Animal Neurobiology MCQS January 8, 2026March 26, 2024 by u930973931_answers 49 min Score: 0 Attempted: 0/49 Subscribe 1. . What is neurobiology? (A) The study of cell biology (B) The study of the nervous system and its functions (C) The study of genetics (D) The study of animal behavior 2. . Which of the following is a function of the central nervous system (CNS)? (A) Regulation of heart rate (B) Digestion of food (C) Coordination of movements (D) Production of hormones 3. . What is the role of neurotransmitters in the nervous system? (A) Transmitting electrical signals within neurons (B) Initiating protein synthesis (C) Regulating blood pressure (D) Storing genetic information 4. . Which part of the brain is responsible for higher cognitive functions such as reasoning and problem-solving? (A) Cerebellum (B) Hypothalamus (C) Cerebrum (D) Brainstem 5. . What is the primary function of the peripheral nervous system (PNS)? (A) Control of voluntary movements (B) Control of involuntary functions like heartbeat (C) Production of hormones (D) Regulation of body temperature 6. . Which of the following is NOT a type of neuron? (A) Sensory neuron (B) Motor neuron (C) Interneuron (D) Epithelial neuron 7. . What is the purpose of the myelin sheath in neurons? (A) To produce neurotransmitters (B) To speed up the transmission of nerve impulses (C) To regulate body temperature (D) To store energy 8. . Which neurotransmitter is commonly associated with feelings of pleasure and reward? (A) Serotonin (B) Dopamine (C) GABA (gamma-aminobutyric acid) (D) Acetylcholine 9. . What is the function of glial cells in the nervous system? (A) Transmitting nerve impulses (B) Providing structural support and insulation (C) Initiating muscle contractions (D) Producing hormones 10. . Which part of the brain is responsible for regulating basic physiological needs such as hunger and thirst? (A) Cerebellum (B) Hypothalamus (C) Cerebrum (D) Brainstem 11. . What is synaptic plasticity? (A) The ability of neurons to transmit signals (B) The ability of synapses to change in strength (C) The production of neurotransmitters (D) The formation of glial cells 12. . What is the function of the blood-brain barrier? (A) To regulate blood pressure (B) To protect the brain from harmful substances in the blood (C) To produce hormones (D) To store glucose 13. . Which of the following is a neurotransmitter involved in pain perception? (A) Endorphins (B) Dopamine (C) Serotonin (D) GABA (gamma-aminobutyric acid) 14. . What is the purpose of action potentials in neurons? (A) To regulate body temperature (B) To transmit nerve impulses along the axon (C) To produce hormones (D) To store genetic information 15. . Which part of the brain is responsible for coordinating voluntary muscle movements? (A) Cerebellum (B) Hypothalamus (C) Cerebrum (D) Brainstem 16. . What is the function of neurotransmitter receptors on the postsynaptic membrane? (A) To store neurotransmitters (B) To initiate protein synthesis (C) To detect and respond to neurotransmitters (D) To regulate blood flow 17. . Which neurotransmitter is commonly associated with mood regulation and emotional responses? (A) Dopamine (B) Serotonin (C) GABA (gamma-aminobutyric acid) (D) Glutamate 18. . What is the role of the autonomic nervous system (ANS)? (A) Control of voluntary movements (B) Control of involuntary functions like heartbeat and digestion (C) Production of hormones (D) Regulation of body temperature 19. . What is the function of the somatic nervous system (SNS)? (A) Control of voluntary movements (B) Control of involuntary functions like heartbeat (C) Production of hormones (D) Regulation of body temperature 20. . Which part of the brain plays a role in learning and memory? (A) Cerebellum (B) Hippocampus (C) Cerebrum (D) Brainstem 21. . What is the purpose of synaptic vesicles in neurons? (A) To regulate neurotransmitter release (B) To store genetic information (C) To produce action potentials (D) To regulate blood pressure 22. . Which neurotransmitter is commonly associated with sleep regulation and mood? (A) Dopamine (B) Serotonin (C) GABA (gamma-aminobutyric acid) (D) Glutamate 23. . What is the function of the limbic system in the brain? (A) Regulation of heart rate (B) Control of voluntary movements (C) Emotional processing and memory (D) Production of hormones 24. . Which of the following is a function of the brainstem? (A) Regulation of body temperature (B) Coordination of voluntary muscle movements (C) Control of basic physiological functions like breathing and heartbeat (D) Emotional processing 25. . What is the purpose of neurotransmitter reuptake in synaptic transmission? (A) To store neurotransmitters (B) To terminate the signal transmission (C) To produce action potentials (D) To regulate blood flow 26. . Which neurotransmitter is commonly associated with inhibitory effects in the brain? (A) Dopamine (B) Serotonin (C) GABA (gamma-aminobutyric acid) (D) Glutamate 27. . What is the role of the corpus callosum in the brain? (A) Emotional processing (B) Integration of sensory information (C) Coordination of muscle movements (D) Communication between the brain hemispheres 28. . Which of the following is a function of the parasympathetic nervous system? (A) Activation of "fight or flight" response (B) Maintenance of rest and digestion (C) Production of adrenaline (D) Regulation of body temperature 29. . What is the function of the amygdala in the brain? (A) Regulation of heart rate (B) Emotional processing and responses, especially fear and aggression (C) Coordination of voluntary muscle movements (D) Production of neurotransmitters 30. . Which neurotransmitter is commonly associated with excitatory effects in the brain? (A) Dopamine (B) Serotonin (C) GABA (gamma-aminobutyric acid) (D) Glutamate 31. . What is the purpose of the hypothalamus in the brain? (A) Coordination of voluntary muscle movements (B) Regulation of basic physiological needs such as hunger and thirst (C) Emotional processing (D) Production of adrenaline 32. . What is the function of the hippocampus in the brain? (A) Emotional processing (B) Regulation of heart rate (C) Formation of new memories (D) Coordination of muscle movements 33. . Which neurotransmitter is commonly associated with movement control and coordination? (A) Dopamine (B) Serotonin (C) GABA (gamma-aminobutyric acid) (D) Glutamate 34. . What is the primary function of the thalamus in the brain? (A) Emotional processing (B) Integration and relay of sensory information (C) Regulation of body temperature (D) Production of adrenaline 35. . Which part of the brain is responsible for regulating sleep-wake cycles and circadian rhythms? (A) Cerebellum (B) Hypothalamus (C) Cerebrum (D) Brainstem 36. . What is the purpose of synaptic pruning in neural development? (A) To increase synaptic connections (B) To eliminate weak or unnecessary synapses (C) To store neurotransmitters (D) To regulate blood flow 37. . Which neurotransmitter is commonly associated with learning, memory, and mood regulation? (A) Dopamine (B) Serotonin (C) GABA (gamma-aminobutyric acid) (D) Glutamate 38. . What is the function of the basal ganglia in the brain? (A) Emotional processing (B) Coordination of voluntary muscle movements (C) Regulation of heart rate (D) Production of neurotransmitters 39. . Which of the following is a characteristic of excitatory neurotransmitters? (A) They inhibit nerve impulses (B) They increase the likelihood of action potentials in postsynaptic neurons (C) They have a calming effect on the brain (D) They decrease synaptic transmission 40. . What is the role of ion channels in neuronal signaling? (A) To store neurotransmitters (B) To regulate neurotransmitter release (C) To control the flow of ions across the cell membrane during action potentials (D) To produce action potentials 41. . Which neurotransmitter is commonly associated with motor control and muscle movement? (A) Dopamine (B) Serotonin (C) Acetylcholine (D) GABA (gamma-aminobutyric acid) 42. . What is the primary function of the reticular formation in the brainstem? (A) Emotional processing (B) Control of sleep and arousal (C) Coordination of voluntary muscle movements (D) Production of adrenaline 43. . Which of the following is a function of astrocytes in the nervous system? (A) Transmitting nerve impulses (B) Providing structural support and nourishment to neurons (C) Initiating muscle contractions (D) Producing neurotransmitters 44. . What is the purpose of synaptic vesicle recycling in neurons? (A) To store neurotransmitters (B) To terminate action potentials (C) To release neurotransmitters during synaptic transmission (D) To regulate blood pressure 45. . Which neurotransmitter is commonly associated with feelings of relaxation and sedation? (A) Dopamine (B) Serotonin (C) GABA (gamma-aminobutyric acid) (D) Glutamate 46. . What is the role of the prefrontal cortex in the brain? (A) Regulation of basic physiological functions (B) Emotional processing and decision-making (C) Coordination of muscle movements (D) Production of hormones 47. . Which of the following is a function of microglial cells in the nervous system? (A) Transmitting nerve impulses (B) Providing structural support and nourishment to neurons (C) Initiating immune responses and clearing debris (D) Producing neurotransmitters 48. . What is the function of voltage-gated ion channels in neurons? (A) To store neurotransmitters (B) To regulate action potentials by controlling ion flow across the cell membrane (C) To release neurotransmitters during synaptic transmission (D) To initiate protein synthesis 49. . Which neurotransmitter is commonly associated with feelings of pleasure and reward, as well as addiction? (A) Dopamine (B) Serotonin (C) GABA (gamma-aminobutyric acid) (D) Glutamate