Lec 5: Integumentary System

Question 1

Composed of dense collagenous connective tissue, contain collagen and elastic fiber

Answer 1

Dermis

Question 2

Dense collagenous connective tissue contains:

Answer 2

fibroblast, Adipocytes and macrophages

Question 3

Contain organs:

Answer 3

Nerves, hair follicles, smooth muscles, glands and lymphatic vessels

Question 4

Responsible for the strength of dermis

Answer 4

Collagen and elastic fiber

Question 5

Collagen fibers are oriented in some direction; skin is most resistant to stretch along these lines

Answer 5

Cleavage lines or tension lines

Question 6

Upper part of dermis, connects dermis to epidermis, which contain many blood vessels

Answer 6

Dermal papillae

Question 7

Delivers material to blood slowly, inserting small needle at a shallow angle into dermis (tuberculin skin test)

Answer 7

Intradermal injection

Question 8

Pinching the skin to form a “tent”, inserting small needle into adipose tissue of hypodermis (insulin injection)

Answer 8

Subcutaneous injection

Question 9

Delivers material to blood faster, inserting a long needle at a 90-degree angle to skin into muscle (most vaccine and antibiotics)

Answer 9

Intramuscular injection