Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Cell Bio Block 3 > Integumentary system > Flashcards

Integumentary system Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

what are the 2 layers of the integumentary system?

A

epidermis

dermis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what type of epithelium is the epidermis and what is it derived from

A

stratified squamous epithelium (keratinized)

ectoderm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what type of epithelium is the dermis and what is it derived from?

A

dense connective tissue

mesoderm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is the layer beneath the dermis?

A

hypodermis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what are the 5 layers of the epidermis?

A 
Stratum basale
Stratum spinosum
Stratum granulosum
Stratum lucidum
Stratum corneum
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

how are cells of the stratum basale connected to the basal lamina?

A

hemidesmosomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

how are the cells of the stratum basale connected to each other?

A

desmosomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what do the cells of the stratum basale contain?

A

melanin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what special process happens in the stratum basale because of the abundant o2 and nutrients?

A

mitosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what special feature do the cells in the stratum spinosum have?

A

spines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

how are the spines connected to adjacent cells?

A

desmosomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what are the thickening of the desmosomes in the stratum spinosum called?

A

nodes of Bizzozero

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what granules are in the cells of the stratum granulosum?

A

keratohyalin granules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what proteins/compounds are in the keratohyalin granules?

A

cysteine and histadine-rich proteins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what are cells of the stratum corneum filled w/?

A

keratin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what type of collagen makes up the papillary layer of the dermis?

A

type 1 and 3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what are dermal papillae?

A

protrusions into the epidermis= fingerprints

18
Q

what type of collagen/fibers make up the reticular layer of the dermis?

A

type 1 collagen + elastic fibers

19
Q

what do the type 1 collagen and elastic fibers of the reticular layer of the dermis form in the skin?

A

Langer’s lines

20
Q

what does excessive stretching of the reticular layer of the dermis cause?

A

stretch marks

21
Q

where are two examples of smooth muscle in the hypodermis?

A

arrector pili muscle (cause goose bumps around hair)

dartos muscle in scrotum

22
Q

what is the layer of adipose tissue of the hypodermis called?

A

panniculus adiposus

23
Q

what is the vestigual layer of striated muscle deep to the subcutaneous fascia in the hypodermis?

A

panniculus carnosus

24
Q

what 3 things do keratinocytes of the epidermis synthesize?

A

keratin
keratohyalin granules
lamellar bodies

25
Q

what are melanocytes derived from?

A

neural crest cells

26
Q

What is an epidermal-melanin unit?

A

Melanocyte+ a # of keratinocytes

27
Q

what is the most significant factor in skin color?

A

melanin content

28
Q

what enzyme is critical to produce melanin?

A

tyrosinase

29
Q

what are the most common characteristics in Waardenburg syndrome?

A

Patch of white hair and skin
Heterochromia irides (eyes of different colors)
Deafness

30
Q

what causes Waardenburg syndrome?

A

faulty proliferation/migration of neural crest cells

31
Q

what are 3 key features of Langerhans cell?

A

Part of the mononuclear phagocytic system
APC
Initiates cutaneous hypersensitivity

32
Q

what is Merkel’s corpuscle

A

Merkel’s corpuscle= neuron + Merkel cell

33
Q

what are Pacinian corpuscles

A

Deep pressure receptors

34
Q

what are Meissner’s corpuscles

A

Touch receptors (dermal papillae)

35
Q

what are Ruffini corpuscles

A

Mechanical displacement of collagen fibers

36
Q

How is the Sebaceous gland connected to the hair?

A

by the pilosebaceous duct

37
Q

what is the type of secretion that is used to secrete sebum?

A

holocrine

38
Q

what are eccrine sweat glands also called?

A

sudoriferous glands

39
Q

how is the excretory product discharged from apocrine sweat glands?

A

exocytosis

40
Q

what are the parts of the nail?

A 
Root
Matrix
Lunula (white half moon)
Eponychium (cuticle)
Hyponychium (under the nail)
41
Q

what is the name of the eyelash mite?

A

Demodex folliculorum

Cell Bio Block 3 (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions