Integumentary System

Question 1

integumentary system consists of

Answer 1

• skin,
• hair,
• nails,
• subcutaneous tissue below the skin,
• assorted glands

Question 2

what is the largest organ of the body

Answer 2

skin

Question 3

what are the functions of the skin

Answer 3

• protection
• containment
• heat regulation
• sensation
• synthesis and storage of vitamin D

Question 4

what are the four types of glands

Answer 4

• sudoriferous
• sebaceous
• ceruminous
• mammary

Question 5

what are the integumentary layers?

Answer 5

• epidermis
• dermis
• subcutaneous tissue (superficial fascia)
• deep fascia

Question 6

order the layers from deep to superficial

Answer 6

• deep fascia
• subcutaneous tissue
• dermis
• epidermis

Question 7

epidermis

Answer 7

keratin stratified epithelium

renews every 25-45 days

avascular (doesnt bleed)

Question 8

dermis is…

contains….

Answer 8

collagen and elastic fibers

contains hair follicles, L. arrector pili, and sebaceous glands

Question 9

subcutaneous tissue (superficial fascia) is…

contains. ..
stores. ....

Answer 9

loose connective tissue and fat

contains sweat gland, blood and lymphatic vessels, and cutaneous nerves to the skin

fat storage

L. retinacula cuta (skin ligaments) extend through this layer: attach deep surface of dermis to the deep rascia

Question 10

deep fascia is…
forms….
extensions from…

Answer 10

dense, organized, connective tissue (thin layer)

no fat

forms retinacula: holds tendons in place
forms bursae-closed sacs w/fluid: prevent friction

extensions from internal surface

  - investing fascia (individual muscles and neurovascular bundles)
  - intermuscular septa (divides muscles into groups)
  - subserous fascia (between musculoskeletal walls and serous membrances in body cavities)