Comprehension quiz

Neuroplasticity, Synaptic Pruning, and Cognitive Reserve

Listen to the lesson carefully, then answer 10 comprehension questions. Pick one option per question.

Question 1How is neuroplasticity defined in the text?

Inability of neurons to regenerate Capacity of the nervous system to modify structural organization Genetic transmission of memory Sparing of damaged brain tissue

Question 2What is the primary function of synaptic pruning?

Growing new skull bone Eliminating underutilized pathways to improve efficiency Accelerating blood circulation to the brain Increasing total head circumference

Question 3Which activities are highlighted as building cognitive reserve?

High-protein diets and physical rest Bilingualism and lifelong intellectual engagement Routine manual tasks Isolated sensory deprivation

Question 4What advantage do individuals with high cognitive reserve possess?

Complete immunity to stroke Resilience against neuropathological degradation Perfect photographic memory Faster bone fracture healing

Question 5What change did structural MRI studies reveal after spatial learning?

Shrinkage of auditory cortex Volumetric expansion in hippocampal regions Calcification of the pineal gland Reduced cerebral blood flow

Question 6Which long-held dogma is challenged by these findings?

That the heart pumps blood That adult mammalian brains are entirely static structures That DNA stores genetic info That sleep restores energy

Question 7What opportunity does understanding neurogenesis present?

Creating synthetic blood Therapeutic interventions for neurodegenerative disorders Reversing skin aging Eradicating bacterial infections

Question 8What happens to neural pathways during synaptic pruning?

Underutilized pathways are selectively eliminated All pathways double in thickness They turn into scar tissue They detach from blood vessels

Question 9Which brain structure showed volumetric expansion in spatial studies?

Cerebellum Hippocampal regions Amygdala Olfactory bulb

Question 10What is the main thesis of the lecture?

Brain anatomy in reptiles Dynamic plasticity and resilience of the human brain History of neurosurgery Electrical signals in heart muscle