Quiz 5

Instructions:

Read each question carefully before answering.
For Multiple Choice Questions, select the best answer by choosing A, B, C, or D.
For True/False Questions, indicate whether the statement is True or False.
For Fill-in-the-Blank Questions, write the most accurate word or phrase to complete the sentence.
Take your time to reflect on the concepts and review your answers if needed.

Nanotechnology in Repairing Nerve Damage

What is the primary role of nanostructured scaffolds in nerve repair? *

To provide structural support for nerve growth

To remove damaged neurons

To replace damaged tissues with synthetic polymers

To prevent nerve cells from attaching to injury sites

Which of the following is a key advantage of nanoparticle-based drug delivery in nerve repair? *

Reduces the need for electrical stimulation

Prevents the need for scaffolds

Delivers drugs or growth factors directly to damaged nerves

Reduces the lifespan of nerve cells

Nanoparticles carrying neuroprotective agents can reduce oxidative stress in damaged neurons. *

True

False

Electrical stimulation using nanosensors has been shown to reduce neural regeneration in spinal cord injury models. *

True

False

__________ scaffolds mimic the extracellular matrix and promote cellular attachment, growth, and differentiation in nerve regeneration. *

scaffolds mimic the extracellular matrix and promote cellular attachment, growth, and differentiation in nerve regeneration.

Nanoparticles carrying brain-derived neurotrophic factor (BDNF) are used to promote __________ regeneration in injured brain regions. *

Nanoparticles carrying brain-derived neurotrophic factor (BDNF) are used to promote regeneration in injured brain regions.

Scaffolding Techniques for Brain and Spinal Cord Injuries

What is the purpose of biodegradable scaffolds in nerve repair? *

To remain permanently in the tissue for long-term support

To degrade as the tissue regenerates, eliminating the need for removal

To prevent new nerve cells from forming

To block drug delivery to damaged areas

3D-printed scaffolds lack the precision needed for tailoring treatment to specific injury sites. *

True

False

__________ scaffolds are made using electrospinning or 3D printing techniques to support nerve regeneration. *

scaffolds are made using electrospinning or 3D printing techniques to support nerve regeneration.

Which scaffolding material is often used to mimic the natural environment of brain tissues? *

Poly(lactic-co-glycolic acid) (PLGA)

Stainless steel

Glass fibers

Copper mesh

Hydrogels can deliver growth factors and support neural tissue repair in brain and spinal cord injuries. *

True

False

Gelatin-based hydrogels loaded with __________ factors have shown promise in improving cell survival in spinal cord injury models. *

Gelatin-based hydrogels loaded with factors have shown promise in improving cell survival in spinal cord injury models.

Future Advancements in Tissue Regeneration

Gene editing combined with nanotechnology allows for the delivery of gene-editing tools to damaged tissues. *

True

False

How does combining stem cell therapy with nanomaterials enhance tissue regeneration? *

Prevents the formation of glial scars

Creates an environment that encourages stem cells to differentiate into neurons

Directly repairs axons without cell involvement

Reduces the need for biodegradable scaffolds

What role do smart hydrogels play in tissue repair? *

They form permanent structures for tissue growth.

They replace neurons with synthetic materials.

They prevent growth factors from reaching injury sites.

They change their properties dynamically in response to injury.

3D bioprinting can be used to create custom tissue constructs for brain or spinal cord injuries. *

True

False

__________ is a promising gene-editing tool that can be delivered using nanoparticles for tissue regeneration. *

is a promising gene-editing tool that can be delivered using nanoparticles for tissue regeneration.

Smart hydrogels that release growth factors in response to __________ are being tested to accelerate tissue repair in brain injuries. *

Smart hydrogels that release growth factors in response to are being tested to accelerate tissue repair in brain injuries.

Real-World Examples and Case Studies

How are carbon nanotubes used in spinal cord injury models? *

As biodegradable scaffolds for temporary support

To create scaffolds that guide nerve growth and support recovery

To replace damaged neurons directly

As carriers for antibiotics

3D bioprinted scaffolds lack structural complexity for brain or spinal cord repair. *

True

False

In spinal cord injury studies, nanoparticle delivery of __________ has led to axonal regeneration and improved motor function. *

neurotrophic factors

antibiotics

neurotransmitters

stem cells

Nanoparticles for targeted stem cell therapy have shown promise in promoting tissue repair in the brain and spinal cord. *

True

False