Tissue Engineering Mcqs

Q:

Laser photolithography was developed from photolithography by replacing the photomask with laser beams.

A) TRUE B) FALSE
 
Answer & Explanation Answer: A) TRUE

Explanation: Laser photolithography was created from photolithography by supplanting the photomask with laser bars that can specifically photopolymerize biomolecules to frame 3D hydrogel structures.

View Answer Discuss

13
Q:

In the ___________ technique, a photosensitive polymer solution and a photomask are normally used.

A) photolithographic B) chemical
C) enzymatic D) electrochemical
 
Answer & Explanation Answer: A) photolithographic

Explanation: In the photolithographic method, a photosensitive polymer arrangement and a photomask are typically utilized. The piece of the polymer arrangement not secured by the cover is presented to the light of a specific wavelength, which incites cross-connecting.

View Answer Discuss

13
Q:

There are two ways to generate blood vessels through vasculogenesis and angiogenesis.

A) TRUE B) FALSE
 
Answer & Explanation Answer: A) TRUE

Explanation: There are two different ways to produce veins through vasculogenesis and angiogenesis, which speak to the veins created from angioblasts and veins expanded from existing veins, separately.

View Answer Discuss

12
Q:

_________ is a method of forming blood vessels within constructs before the latter are implanted in the defect sites.

A) Prevascularization B) Pulverization
C) Combustion D) Gasification
 
Answer & Explanation Answer: A) Prevascularization

Explanation: Prevascularization is a technique for shaping veins inside develops before the last are embedded in the imperfection locales. The preexistence of veins in the builds can guarantee that the seeded cells are provided with oxygen and supplements and the squanders are expelled from the earliest starting point. This can add to the multiplication, development, and separation of the seeded cells lastly invigorate the recovery of tissues or organs.

View Answer Discuss

21
Q:

Liver exhibits nonlinear stress-strain behavior.

A) TRUE B) FALSE
 
Answer & Explanation Answer: A) TRUE

Explanation: In the same way as other natural tissues, the liver displays nonlinear pressure strain conduct under huge mishappenings. Therefore, the liver is regularly demonstrated as a hyperelastic material.

View Answer Discuss

14
Q:

The liver is known to be linearly ___________ in shear up to shear strains of 0.2%.

A) viscoelastic B) conductive
C) reflective D) strong
 
Answer & Explanation Answer: A) viscoelastic

Explanation: Viscoelasticity alludes to materials that display time-subordinate highlights in their mechanical reaction, for example, creep, stress unwinding, or strain rate reliance. The liver is known to be directly viscoelastic in shear up to shear strains of 0.2%. Past this breaking point, it shows nonlinearly viscoelastic conduct, with a shear unwinding modulus that is subject to strain.

View Answer Discuss

14
Q:

Many studies have assumed that the liver parenchyma is anisotropic material.

A) TRUE B) FALSE
 
Answer & Explanation Answer: A) TRUE

Explanation: Numerous examinations have accepted that the liver parenchyma is an isotropic material, implying that its mechanical properties are similar when estimated toward any path.

View Answer Discuss

14
Q:

Typical liver shear moduli range from ___________

A) 200 to 5000 Pa B) 5 to 100 Pa
C) 1 to 20 kPa D) 100 to 900 kPa
 
Answer & Explanation Answer: A) 200 to 5000 Pa

Explanation: The elastic (Young’s) modulus E and shear modulus G are proportions of a material’s capacity to oppose distortion under a connected burden. Ordinary liver shear moduli run from 200 Pa to 5 kPa, and run of the mill versatile moduli run from ∼1 to 20 kPa. On the off chance that the liver is thought to be an incompressible material (i.e., to keep up a steady volume under mechanical stacking), which is a typical supposition in numerous biomechanics thinks about, at that point to a first guess the flexible modulus is generally identical to multiple times the shear modulus (E ≈ 3G).

View Answer Discuss

17