Integumentary System (Lecture 1)

Question 1

The integumentary system is Organ systms composed of

Answer 1

skin, hair, oil, sweat glands, nails, and sensory receptors

Question 2

The integumentary system Layers

Answer 2

Epidermis, Dermis and Hypodermis (sub q layer)

Question 3

The integumentary system - Skin Basic functions

Answer 3

thermoregulation,
blood reservoir
protection 
cutaneous and sensations 
excretion and absorption 
synthesis of Vit D

Question 4

The Layers of the skin - Epidermis: TIssue type/composition?

Answer 4

Epithelial

Question 5

The Layers of the skin - Epidermis: Cells

Answer 5

keratinocytes, melanocytes,
Intraepidermal Macrophages (aka Langerhans)
Tactile Epithelial cells (aka merkel cells)

Question 6

The Number of Melanocytes is the same in everyone the difference in skin color is from?

Answer 6

the amount of pigment the melanocyte produces

Question 7

What are macrophages? what do they do? what are they apart of?

Answer 7

eat cellular debris. They are also part of the immune response

Question 8

Epidermis Layers: (Stratum ______ 1-5) name all 5 layers in descending (deeper layer) order.

Answer 8

corneum
lucidum 
granulosum
spinosum
basale

Question 9

Epidermis // Stratum Corneum tissue characteristics ( tissue type cell contents)

Answer 9

stratified squamous

keratinocytes containing keratin

Question 10

Epidermis // Stratum Lucidum characteristics ( tissue type cell contents)

Answer 10

only present in thicker skin,

clear dead keratinocytes and keratin

Question 11

Epidermis // Stratum Granulosum characteristics ( tissue type cell contents)

Answer 11

cells release a lipid-rich water repellant secretion

Question 12

Epidermis // Stratum Spinosum Characteristics ( tissue type cell contents)

Answer 12

location of intraepidermal macrophage cells (involved in phagocytosis)

Question 13

Epidermis // Stratum Basale Characteristics ( tissue type cell contents)

Answer 13

Simple cuboidal or columnar
stem cells - cell division
Melanocytes & tactile epithelial cells

Question 14

Dermis - Tissue composition

Answer 14

Dense irregular (Connective tissue)

Question 15

Dermis - Cells

Answer 15

Fibroblasts
macrophages and mast cells
White blood cells: Eosinophils and Neutrophils

Question 16

Dermis Contains?

Answer 16

Contains blood vessels, nerves, hair follicles and glands

Question 17

Dermis made from connective tissue or epithelial tissue?

Answer 17

connective tissue

Question 18

is epithelial tissue of the epidermis well vascularised? is the Dermis?

Answer 18

No,

Yes

Question 19

Innate immunity is the _______ of defense

Answer 19

1st line of defense Skin

Question 20

Dermis Layers

Answer 20

Papillary Region (Superficial) 
Reticular Region (

Question 21

Dermis layers: Papillary Region - What fibers does it consist of

Answer 21

Collagen and Elastic Fibers

Question 22

Dermis layers: Papillary Region - Surface area is in contact with _______ and is increased by the _______ papillae.

Answer 22

Epidermis,

Dermal papillae

Question 23

Dermis layers: Papillary Region - Contains meissner corpuscles that ________ ______ and/or free nerve ending/s that also detect _______ and ______

Answer 23

detect touch

touch and temperature

Question 24

Dermis layers: (deeper region of dermis) Reticular Region - What fibers does it consist of

Answer 24

Thick collagen fibers create tension lines (from natural lines of pull from muscle attachments

Question 25

Dermis fact - do women have a thinner dermis? if so what would you call the dimples?

Answer 25

yes | cellulite

Question 26

Epidermal ridges create what?

Answer 26

Fingerprints

Question 27

Dermis layers: Hypodermis - is it part of the skin?

Answer 27

No

Question 28

Dermis layers: Hypodermis - Tissue composition?

Answer 28

Varies from Areolar to Adipose

Question 29

Dermis layers: Hypodermis Function

Answer 29

storage site for fat an blood vessels that supply and drain capillaries of the skin

Question 30

Integumentary System Accessory Structures - Hair what are the specific parts of the hair (portions and function) the shaft is? the root is? and is located in? the follicle is for?

Answer 30

shaft (superficial portion) root (deep portion LOCATED dermis or hypodermis) follicle - sensory preception

Question 31

Integumentary System Accessory Structures - Glands: what is the oil gland called?

Answer 31

Sebaceous

Question 32

Integumentary System Accessory Structures - Glands: Sebaceous (oil) gland function

Answer 32

prevents dryness, inhibits bacterial growth

Question 33

Integumentary System Accessory Structures - Glands: 3 Sweat(sudoriferous) Gland names and purpose

Answer 33

Eccrine, (thermoregulation) Apocrine, Emotional sweating ( much worse body odor) (just women)Mammary - Specialize sudoriferous gland

Question 34

_______ detect touch stimuli and transmit these signals to sensory nerves.

Answer 34

Merkel Cells

Question 35

Hair growth occurs when cells in the ______, at the base of the bulb, divide and push upwards

Answer 35

Hair matrix

Question 36

when scarring occurs after a deep wound, healed tissue __________

Answer 36

looses its normal function

Question 37

during integumentary innervation, sensory receptors in the skin pass signals to?

Answer 37

Nerves of the PNS

Question 38

Blood Vessels carry ______ to the site of tissue damage, causing a fibrous clot to form

Answer 38

Platelets