IBEC TEST QUESTIONS WITH 100% CORRECT ANSWERS LATEST UPDATE | VERIFIED ANSWERS.

IBEC TEST QUESTIONS WITH 100% CORRECT ANSWERS LATEST UPDATE | VERIFIED ANSWERS. Average time of hair, reappearance after tweezing or waxing: Medium depth, terminal hair (as on side of face and body) - ANSWER- 6 to 7 weeks Average time of hair, reappearance after tweezing or waxing: Medium depth intermediate or accelerated vellus hair - ANSWER- 7 to 9 weeks Average time of hair, reappearance after tweezing or waxing: Shallow vellus hair (downy, general face) - ANSWER- 8 to 10 weeks* Ultraviolet rays from sunlight react with the amino acid ____________ found in the melanocytes and produce melanin - ANSWER- tyrosine Generally, people of different races have approximately the same number of ______________. People with dark skin have melanocytes that are more _________ and produce more melanin. - ANSWER- melanocytes active The follicle _________ to about a third of its anagen size. - ANSWER- shrinks The ________ plays a viral role in maintaining the body's temperature and homeostasis. - ANSWER- skin _________________ are dendritic cells in the epidermis that have an immunologic function - ANSWER- Langerhans cells Langerhan cells are identical to ________ ________________ and present antigens to lymphocytes with which they interact via specific surface receptors. - ANSWER- tissue macrophages The interface between the epidermis and dermis is called - ANSWER- Basement membrane zone (BMZ) Electron microscopic examination reveals 3 layers: - ANSWER- 1. lamina lucida 2. basal lamina IBEC TEST QUESTIONS WITH 100% CORRECT ANSWERS LATEST UPDATE | DETAILED ANSWERS 3. anchoring fibrils Lamina lucida - ANSWER- relatively lucid zone transversed by delicate anchoring filaments that connect the cell membrane of the basal cell with the basal lamina Basal lamina - ANSWER- the basal lamina an electron- dense zone composed primarily of type IV collagen derived from epidermal cells and anchoring fibrils Anchoring fibrils - ANSWER- which are thick fibrous strands, composed primarily of type VII collagen, that complete the connection with the dermis The BMZ - ANSWER- serves as the "glue" between the epidermis and dermis and is the site of blister formation in a number of diseases. It appears that there are two areas of target: - ANSWER- the bulge and the bulb The matrix and papilla house the - ANSWER- bulge and the bulb The total number of follicles is approximately _________ in men and women, and appears to be the same in all races. - ANSWER- equal It is the activity of the ____ _______, rather than their number which determines the amount of growing hair. - ANSWER- hair follicles The most important hormone controlling growth are "____________" commonly known as "male" hormones - ANSWER- androgens The most important hormone is - ANSWER- testosterone In the scalp, androgens cause hair to change from _______ to _____________. - ANSWER- vellus to terminal Once _________ hair has been transformed into terminal hair, it cannot change back even if androgen disappear. Therefore, ____________ must be treated promptly to minimize the number of terminal hairs induced by the excess androgens. - ANSWER- vellus hirsutism Electrolysis should not be performed until hormonal therapy has been used fir at least. Otherwise, it will result in an endless "chasing" of new coarse hairs throughout the body - ANSWER- 6 months. Sexual hair i.e,, facial, ear, chest, abdominal, pubic and axillary, is ______________ dependent and this hormone is primarily ______________, which is converted to dihydrotestosterone before it becomes effective. - ANSWER- hormone dependent testosterone In 1996, Rox Anderson - ANSWER- discovered that it was possible to selectively target a specific chromophore with laser to destroy hair follicles. Stimulated emission - ANSWER- phenomenon that is produced inside a laser. When electrons are stimulated repeatedly by energy, they will force a proton to jump off in a wave form and return to their resting state. Amplification - ANSWER- a laser beam is generated by amplification; which is stimulated emission repeated innumerable times resulting in a laser beam. Wavelength is measured in __________ when dealing with lasers and IPLs - ANSWER- nanometers One nanometers is ____ __________ of a millimeter - ANSWER- 1/1 millionth; usually one billionth of a nanometer Ruby = - ANSWER- 694nm Alexandrite = - ANSWER- 755nm Diode = - ANSWER- 810nm ND Yag = - ANSWER- 1064nm Basic Laser and IPL Parameters - ANSWER- Wavelength Pulse Width Spot size Fluence Laser VS. IPL - ANSWER- LASER -monochromatic -coherent -collimated IPL -polychromatic -divergent (incoherent) -non-collimated Wavelength - ANSWER- is determined by the distance between two peaks and is measured in nanometers (nm) Chromophore/target - ANSWER- the lower on the spectrum of light the higher the attraction to melanin and oxyhemoglobin Depth of penetration is dependent on - ANSWER- wavelength and spot size Lower the spectrum the _____________ the penetration - ANSWER- shallower The higher on the spectrum, the ____________ the penetration - ANSWER- deeper Pulse Width - ANSWER- the amount of time energy is directed to a target