XII Biology Nervous Coordination Online Test Mdcat-2024

XII Biology Nervous Coordination Online Test Mdcat-2024
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      XII Biology Nervous Coordination Online Test Mdcat-2024

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      1 / 50

      1. What is the spinal cord primarily responsible for?

      2 / 50

      2. The brainstem consists of three distinct parts. What are these parts?

      3 / 50

      3. Which part of the hindbrain tends to influence transitions between sleep and wakefulness and plays a role in the rate and pattern of breathing?

      4 / 50

      4. What is the primary function of the medulla in the hindbrain?

      5 / 50

      5. In the cerebral cortex, which area is responsible for higher mental activities such as intelligence, reasoning, and memory?

      6 / 50

      6. Which part of the limbic system contains clusters of neurons involved in hormone production and neural conduction?

      7 / 50

      7. What are the four regions based on anatomical criteria that divide the cerebral cortex?

      8 / 50

      8. The diencephalon consists of which major integrating center and main input center for sensory information?

      9 / 50

      9. What is the primary role of the limbic system's amygdala?

      10 / 50

      10. Which part of the brain acts as a major coordinating center, controlling body temperature, hunger, thirst, and water balance?

      11 / 50

      11. In the cerebral cortex, which lobe is responsible for controlling responses of the body?

      12 / 50

      12. Inhibitory synapses lead to the opening of which channels, causing a change in the membrane potential?

      13 / 50

      13. Which neurotransmitter, mentioned as one of the most common excitatory neurotransmitters, can be either excitatory or inhibitory depending on the type of receptor?

      14 / 50

      14. At an excitatory synapse, what is the electrical change caused by the binding of neurotransmitter to the receptor called?

      15 / 50

      15. What is a synapse?

      16 / 50

      16. How is the removal of neurotransmitters from the synaptic cleft accomplished?

      17 / 50

      17. In a chemical synapse, what triggers the release of neurotransmitters by exocytosis?

      18 / 50

      18. What are the two basic types of synapses in animals?

      19 / 50

      19. Which cell transmits the action potential to the synapse?

      20 / 50

      20. What is the structure of a synapse, and what is the gap between the pre-synaptic and post-synaptic cells called?

      21 / 50

      21. What is a synapse primarily responsible for?

      22 / 50

      22. What is the term for the condition where the membrane becomes more negative than the resting potential after depolarization?

      23 / 50

      23. What is the duration for the return to the resting state during repolarization usually taken in milliseconds?

      24 / 50

      24. What is the voltage measured across the neurolemma when the membrane is at rest and not being stimulated?

      25 / 50

      25. What is the term for the rapid shift from negative to positive membrane potential during depolarization?

      26 / 50

      26. What is the threshold potential for a neuron to undergo an action potential?

      27 / 50

      27. What event marks the beginning of depolarization during the generation of an action potential?

      28 / 50

      28. What is the resting membrane potential (RMP) of a neuron in millivolts?

      29 / 50

      29. What is the condition during which the electrical balance is restored inside and outside the neurolemma, involving the opening of potassium channels?

      30 / 50

      30. During depolarization, which ions rush inside the cell, causing the membrane potential to change from negative to positive?

      31 / 50

      31. What is the term for the voltage measured across the neurolemma of a neuron?

      32 / 50

      32. What is the electrical signal that depends on the flow of ions across the membrane of a neuron called?

      33 / 50

      33. In a reflex action involving a sensory receptor, afferent neuron, interneuron, efferent neuron, and effector, identify the correct sequence of their activation in terms of signal transmission.

      34 / 50

      34. In reflex actions, what is the pathway along which impulses are transmitted from a receptor to an effector called?

      35 / 50

      35. What is the primary function of motor neurons?

      36 / 50

      36. Which type of neuron facilitates the movement of sensory impulses from receptors to the central nervous system (CNS)?

      37 / 50

      37. What structures are associated with protein synthesis and contain a group of ribosomes and rough endoplasmic reticulum in the neuron?

      38 / 50

      38. Which cells produce myelin in the central nervous system (CNS)?

      39 / 50

      39. What is the term for the non-myelinated part of the axon between two Schwann cells?

      40 / 50

      40. Which part of the neuron is primarily involved in guiding axon migration and providing immune functions?

      41 / 50

      41. What type of cells produce myelin in the peripheral nervous system (PNS)?

      42 / 50

      42. Which part of the neuron responds to signals from other neurons or the external environment due to its branched form?

      43 / 50

      43. What is the structure that is involved in the production of neurotransmitters?

      44 / 50

      44. Taste receptors found in the tongue are called _______.

      45 / 50

      45. Which receptors detect changes in the total solute concentration of the blood and stimulate thirst when osmolarity increases?

      46 / 50

      46. What type of neurons receive all sensory inputs from receptors and transmit them to the central nervous system (CNS)?

      47 / 50

      47. Where are olfactory receptors found, responsible for the sense of smell?

      48 / 50

      48. Which receptors transmit information about the total solute concentration in a solution and respond to individual kinds of molecules?

      49 / 50

      49. Which receptors are stimulated by a stimulus that causes or is about to cause tissue damage, perceived as pain?

      50 / 50

      50. What type of receptors respond to physical deformation caused by stimuli like pressure, touch, stretch, motion, and sound?

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