Brainscape's Knowledge GenomeTM

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


See full index

Anatomy and Physiology > test 3 > Flashcards

test 3 Flashcards

1
Q

what are the 4 types of epidermis cells

A
  • keratinocytes
  • melanocytes
  • dendric (Langerhans) cells
  • tactile (Merkle) cells
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what do keratinocytes do

A

produce keratin

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

what do melanocytes do

A

produce melanin

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

what do dendric (Langerhans) cells do

A

activate the immune systems

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

what do tactile (Merkle) cells do

A

activate touch receptors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

name the 5 layers of the epidermis from most superficial to deepest

A

1: Stratum Corneum
2: Stratum Lucidum
3: Stratum Granulosum
4: Stratum Spinosum
5: Stratum Basale

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

what’s the stratum Basale layer of the epidermis responsible for

A

cell division and replacement

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

whats the stratum spinosum layer responsible for

A
  • several layers thick
  • contain weblike systems of pre-keratin filaments attached to desmosomes
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

whats the stratum granulosum layer

A

and thin layer made of 1-5 layers of flat cells

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

whats the stratum lucidium layer

A

found only on parts with thick skin

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

whats the stratum corneum layer

A

keratinaized dead cells to protect deeper layers form abrasion and prevent water loss

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

what are the layers of the skin in order

A

epidermis, dermis, hypodermis

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

what does the dermis contain

A
  • Nerves
  • Blood vessles
  • lymph vessles
  • hair follicles
  • oil glands
  • sweat glands
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what layers make the dermis

A
  • Papillary layer
  • Reticular Layer
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is the Papilary dermis layer

A

areolar connective tissue

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

what is the reticular dermis layer

A

dense irregular connective tissue

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

what is keratin

A

a protein that gives skin connective properties

18
Q

the epidermis is vascular. True or False

A

False. It is avascular

19
Q

the dermis is vascular. true or false

A

TRUE

20
Q

what is the hypodermis layer

A

the depest layer that contains superficial fascia

21
Q

what is secreted by the sebatious glands

A

sebum

22
Q

what is secreted by the eccrine sweat glands

A

sweat

23
Q

what are the 2 types of sweat glands

A
  • Eccrine (merocrine)
  • Apocrine
24
Q

where are apocrine sweat glands

A

axillary and anogenital area

25
Q

what is striae

A

“stretch marks”. dermal tears that cause white silvery scars

26
Q

what are the functions of the skin

A
  • Protection
  • Body temperature regulation
  • Cutaneous sensations
  • Metabolic functions - skin can synthesize vitamin D needed for calcium absorption in intestine
  • Blood reservoir
  • Excretion of wastes
27
Q

how is osteoporosis classified

A

bone matrix is normal, bone mass decreases

28
Q

how is osteomalacia (rickets) classified

A

poor mineralization of bones causing soft, weak bones

29
Q

how is pagets disease classified

A

Excessive and haphazard bone deposit and resorption cause bone to grow fast and develop poorly

30
Q

what is Hyaline cartilage

A
  • Provides support, flexibility, and resilience
  • Most abundant type; contains collagen fibers only
31
Q

what is elastic cartilage

A

Contains elastic fibers that can repeatedly be bent

32
Q

what is fibrocartilage

A

Thick collagen fibers with parallel rows of chondrocytes

33
Q

what is chondrocytes

A

cells that produce cartilage within jelly-like extracellular matrix

34
Q

what is the extracellular matrix made of

A

jelly like ground substance and fibers

35
Q

what is the function of hematopoiesis

A

formation of blood cells within the red bone marrow cavities

36
Q

what makes an osteon

A
  • Osteocytes
  • central canal (in the centre)
  • several rings of bone matrix called lamellae
37
Q

what is inside the haversian central canal

A

blood vessles and nerve fibers

38
Q

what is the purpose of canaliculi

A

provides nutrients and remove waste from osteocytes in compact bone

39
Q

what is the purpose of osteoblasts

A

Bone-forming cells that secrete unmineralized bone matrix called osteoid

40
Q

what is the purpose of osteoclasts

A

bone resorption (breakdown of bone)

41
Q

whats part of the appendicular skeleton

A

arms and legs

42
Q
A

Anatomy and Physiology (6 decks)

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