Lesson 3

• cutane is?

  skin
• cyan is ?

  blue
• derm is?

  skin
• dermat is?

  skin
• kerat is?

  hard
• melan is?

  black
• onych is?

  nail
• seb is?

  oil
• the skin makes up approximately _% of the body’s total weight?

  15%
• it is the skin’s most superficial layer, composed of stratified squamous epithelial tissue?

  epidermis
• it is deep to the epidermis and is composed of loose/areolar connective tissue over dense irregular connective issue?

  dermis
• the cutaneous glands, the hair follicles, and most skin‘s nerve endings can be found in the ?

  dermis
• it is deep to the dermis, although it is technically not part of the skin, this layer attaches the skin to the rest of the body?

  Hypodermis or Subcutaneous layer
• it is the deepest layer, contains a single layer of cuboidal cells. it deeps into the dermis with cells that actively grow and divide to produce new epiermis?

  stratum basale
• it is found only in thick skin?

  stratum lucidum
• it is the mot superficial stratum, it may have as many as 20 layers of cells? (most important)

  Stratum Corneum
• begin in the stratum basale and make up the majority of epidermal cells. Their purpose is to grow and divide?

  Keratinocytes
• the keratinocytes are tightly packed, filled with keratin, and have died. This process is called?

  Cornification
• Melanocytes produce skin pigments called?

  Melanin
• The keratinocytes take in the melanin produced by pinching off bits of the melanocyte extensions that contain melanin-filled vesicles called?

  Melanosomes
• It serves as receptors for fine touch only. Although they are found in the stratum basale, they are associated with nerve cells in the underlying dermis?

  Tactile cells
• this are immune system cells found in the stratum spinosum and the stratum granulosum. They alert the body's immune system to the invasion of Pathogens (disease-causing foreign invaders) that could make it through the stratum corneum?

  Dendritic cells
• sometimes called the "true skin."

  Blood vessels, fibers, nerve end-ings, hair follicles, and cutaneous glands are found in the?

  Dermis
• The superficial edge of the dermis has bumps called?

  Papillae
• these are arranged in a random pattern over most of the body, form individual-specific patterns of ridges on the palmar and plantar surfaces. This unique arrangement creates fingerprints?

  papillae
• fibers that give the skin strength?

  Collagen
• fibers that provide elasticity, which allows the skin to come back to shape if stretched?

  Elastin
• these are important for healthy skin because they are nece chary for collagen production. You can get vitamin anahich is ase impos at in the maintenance of epithelial tissues) by eating green and yellow vegetables, dairy products?

  Vitamin A and Vitamin C
• These receptors include warm receptors, cold receptors, pain receptors, and pressure receptors?

  Nerve Endings
• are considered exocrine glands, they are located throughout the dermis. Exocrine glands produce and secrete products that are delivered to the appropriate locations through ducts?

  Cutaneous Glands
• are associated with a hair follicle. leads to the hair follicle surrounding the hair root?

  Sebaceous glands
• very oily, lipid-rich substance, is produced by the sebaceous gland to moisturize the skin and hair?

  Sebum
• (a whitehead or blackhead). It appears as a blackhead if the plug reaches the surface?

  comedo
• bacteria normally live on the skin, oil and excess cells of the plug allow these bacteria to grow in the plugged follicles. This causes inflammation that may result in the breakdown in the hair follicle wall. If the inflammation continues, pus may form, resulting in a pimple. This condition is called?

  Acne
• • This type of sweat gland delivers its sweat through a duct leading to a hair follicle
  • associated with axillary hair, pubic hair, and the beard. They begin to produce their sweat at puberty?

  Apocrine sweat gland
• • This is the most numerous type of sweat gland.
  • They deliver their sweat to the surface of the skin through a duct whose opening is called a pore.
  • They are located all over the body and are highly concentrated in the palmar and plantar regions.
  • Helps cool the body through evaporation

  Merocrine sweat gland
• plays an important role in the healthy functioning of the integumentary system?

  hair follicles
• it is the hair’s growth center, and it contains important nerves and blood vessels that provide amino acids for keratin production?

  dermal papilla 
• This muscle attaches the hair follicles base to the epidermis at an angle?

  arrector pili muscle
• • This is a modified sweat gland found in the breast.
  • it begins to develop at puberty and fully develop during pregnancy.
  • They deliver their product to ducts that end at the nipple
  • Nourishes an infant

  Mammary gland