Hair shaft - Seen above the scalp, Cuticle - Protects the nails from bacteria, Dermis - The thickest layer of the skin, Nail Matrix - The area where nails start to grow, Sebaceous Gland - Produces the sebum or oily. substance,

Integumentary SYSTEM (Learning Task 2)

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?