Integumentary

Question 1

The scientific study and medical treatment of the integumentary system

Answer 1

Dermatology

Question 2

Accessory organs of the skin are

Answer 2

Hairs nails oil and sweat glands

Question 3

Functions of the skin

Answer 3

Protection, temperature, excretion, vitamin d synthesis, Sensory reception, storage

Question 4

The body’s largest and heaviest organ

Answer 4

Skin

Question 5

Two layers of skin are

Answer 5

Epidermis and dermis

Question 6

Hypodermis

Answer 6

Below not part of skin

Question 7

Thick skin is found

Answer 7

Palms of hand and sole of feet

Question 8

Thin skin

Answer 8

Covers rest of the body (hair follicles, sebaceous glands and sweat glands

Question 9

Epidermis is composed of

Answer 9

Dry keritanized stratified squamous epithelium

Question 10

Five layers of epidermis and there functions

Answer 10

Stratum basale
Function- divide, mitosis of stem cells.
Stratum spinousum
Function- strength and flexibility

Stratum granulosum
Function strength and flexibility contains coarse dark staining kerathoyalin granules
Stratum lucidum
Stratum corneum
Function- protects underlying skin from infection dehydration h2o poss chemical and physical stress
3-5 layers of flattened, translucent dead cells found only in thick skin palms and soles

Question 11

Accounts for 15% of body weight

Answer 11

skin

Question 12

A pigment produced by melanocytes

Answer 12

Melanin

Question 13

A red pigment found in hemoglobin of red blood cells

Answer 13

Heme

Question 14

Epithelial tissue pinches off to form ductless endocrine glands found with in connective tissue

Answer 14

Endocrine glands

Question 15

Hypodermic sub q injections are administered here because this layer is highly vascular and drugs are absorbed quickly

Answer 15

Hypodermis

Question 16

Composed of a regular dense connective tissue you containing fibroblast bundles of collagen and of course elastic fibers

Answer 16

Reticular layer of dermis

Question 17

Composed of areas ct capillary loops meissner corpuscles and free nerve endings

Answer 17

Papillary layer of dermis

Question 18

Consists of 3-5 layers of flattened keratinocytes undergoing apoptosis

Answer 18

Stratum granulosum

Question 19

Consists of 3-5 layers of flattened translucent dead cells found only in thick skin palms and soles

Answer 19

Stratum lucidum

Question 20

Consists of 15-30 layers of dead, flattened cells filled with keratin ; flake off as tiny specs of dander every two weeks

Answer 20

Stratum corneum

Question 21

Single layer of cuboidal to low columnar stem cells and keratinocytes that lie on basement membrane

Answer 21

Stratum basale

Question 22

Consists of 8-10 layers of kerantinocytes held together by desmosomes; some maintain capacity to divide

Answer 22

Stratum spinosum

Question 23

These glands are large And active at puberty

Answer 23

Apocrine (odiferous) glands

Question 24

Simple tubular glands found over entire body

Answer 24

Eccrine (merocrine ) sweat glands

Question 25

Found at base of hair follicle, secrete sebum into hair follicle

Answer 25

Oil (sebaceous) glands

Question 26

Visible portion the projects from skin

Answer 26

Hair shaft

Question 27

Dead keratinized threads of epidermal cells cemented together

Answer 27

Hair(pili)

Question 28

Visible portion the projects from skin

Answer 28

Hair shaft

Question 29

Below skin surface penetrates dermis and hyper dermis

Answer 29

Hair root

Question 30

Sensory nerve endings (receptors) around hair follicle detect movement ( light touch)

Answer 30

Hair root plexuses

Question 31

Smooth muscle attached half way down hair follicle

Answer 31

Arrector pili

Question 32

What do eyelashes do

Answer 32

Screen out foreign agents

Question 33

What do eyebrows do

Answer 33

Preevent sweat from dripping into eyes

Question 34

Trap dust and other large particles

Answer 34

Nostrils

Question 35

Prevent heat loss

Answer 35

Scalp

Question 36

Visible portion flattened keratinized dead cellsof stratum corneum filled with harder type of keratin; pink due to underlying capillaries

Answer 36

Nail Body

Question 37

Cemented plates of hard keratinized dead epidermal cells

Answer 37

Nails

Question 38

Extends past finger appears white because no underlying capillaries

Answer 38

Free edge

Question 39

Lies within nail fold

Answer 39

Nail root

Question 40

Semilunar portion is white due to thickened stratum basale below

Answer 40

Lunula

Question 41

Thin layer of stratum corneum at base of nail

Answer 41

Eponychium (cuticle)

Question 42

Beneath free edge thickened region of stratum corneum that secures nail to fingertip

Answer 42

Hyponychium (nail bed)

Question 43

Where new growth arises rate of nail growth is influenced by persons age health nutritional status and season

Answer 43

Nail matrix

Question 44

Respond to pain and temperature

Answer 44

Free nerve endings

Question 45

Receptors for light touch in papillary

Answer 45

Meissner a corpuscles

Question 46

Receptors for sustained (deep) pressure

Answer 46

Pacinian corpuscles

Question 47

specialized epithelial cells in stratum basale, in conjunction with nerve endings receptors for touch.

Answer 47

Merkel discs

Question 48

Protect tips of fingers and toes and allow one to manipulate objects

Answer 48

Nails

Question 49

What are the 3 layers of hair shaft and root

Answer 49

medulla- 2-3 rows of irregular shapes cells that contain soft keratin and melanin Cortex- bulk of shaft; elongated cells contain hard keratin and melanin Cuticle- single layer of thin, flat cells contain hard keratin and overlay to form shingles