INTEGUMENTERY SYSTEM
INTEGUMENTERY SYSTEM MISCELLENOUS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
cortex
|
|
|
matrix
|
|
|
shaft
|
|
|
Root
|
Detailed explanation-1: -The cortex is surrounded by the cuticle, a layer of dead, overlapping cells forming a protective layer around the hair.
Detailed explanation-2: -There are 3 layers to the hair shaft: Medulla (See #9 on image) is the innermost layer. Cortex (See #10 on image) is the second layer making up most of the hair shaft.
Detailed explanation-3: -Each hair has three layers: the medulla (pronounced: meh-DULL-uh) at the center, which is soft. the cortex, which surrounds the medulla and is the main part of the hair. the cuticle (pronounced: KYOO-tuh-kull), the hard outer layer that protects the shaft.
Detailed explanation-4: -The cortex is in the centre of each hair fibre and consists of long, tightly packed keratin spindles stabilised by disulphide bonds. These keratin spindles are arranged in a hierarchy, starting with the smallest structure, the keratin proteins themselves, to the largest and final structure, the cortex itself.