Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Spring of 2012 > Integumentary System (Exam 1) > Flashcards

Integumentary System (Exam 1) Flashcards

This flashcard deck was created using Flashcardlet's card creator

0
Q

Epidermis

A

Outermost
Stratified squamous epithelium
Most cells produce keratin

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

The skin

A

Largest organ of the body

Composed of epidermis and dermis

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

Stratum corneum

A

Top layer of epidermis
Hard layer
20-30 layers of dead cells filled with keratin
Water proofing glycolipids

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

Stratum lucidum

A

Clear layer
2nd layer
2-3 layers of dead cells filled with keratin
Only found in hard skin (soles, palms)

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

Stratum granulosum

A

Granular layer
3rd layer
3-5 layers of cells that are alive but dying

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

Keratinacyte

A

Produce granules of keratohyaline

Which secrete keratin

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

Lamellar bodies

A

Produce lamellated granules

Which secrete the glycolipids

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

Stratum spinosum

A 
Spiny layer
4th layer
5-7 layers of living cells
Has melanin granules
Has langerhan's cells
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Langerhan’s cells

A

Cells of the immune system that have migrated from the bone marrow

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

Stratum basalt

A 
Basal layer
5th layer
One layer of rapidly dividing cells
Has melanacytes
Has merkel discs
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Melanacyte

A

Produces melanin granules

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

Merkel discs

A

Touch receptors

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

Dermis

A 
Dense irregular connective tissue
Has:
Blood vessels
Nerve endings
Hair follicles
Glands
Smooth muscle
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Papillary layer

A

1st layer of dermis
Immediately below that stratum basale
Areolar connective tissue with collagen and elastin
Dermal papillae on palms form fingerprints

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

Reticular layer

A

2nd layer of dermis
80% of the dermis
Dense irregular connective tissue with large bundles of collagen and elastin

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

Hypodermis

A

Below the dermis
Functions:
Stores fat for insulation and shock absorption
Anchors the skin to underlying bone and muscle
Pathway for blood vessels and nerves to reach upper layers

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

Merocrine/eccrine

A

Sweat glands
Most common
Secretory portion is coiled deep in the dermis
Releasing duct extends to the surface of the epidermis
Secretes sweat made of H2O and salt

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

Apocrine

A 
Larger sweat glands
Releasing duct opens into hair follicles
Found in the Axillary and pubic region
Not active till puberty
Organic substances in secretions:
Odorless when first released
Odiferous when bacteria begin breaking down organic constituents
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Sebaceous gland

A

Present everywhere except palms and soles
Secretes sebrum
Softens and lubricates hair and skin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Hair shaft

A

Extends above the skins surface

20
Q

Hair root

A

Embedded in the skin

Inside of follicle

21
Q

Medulla

A

Central axis of hair made of soft keratin

22
Q

Cortex

A

The bulk of the hair

23
Q

Cuticle

A

Outermost layer of hard keratin

24
Hair follicle
Wraps around the root | Deep end extends into the hair bulb
25
Hair bulb
Contains the matrix | Mitosis epithelial cells that produce new hair
26
Arrector pili muscle
Smooth muscle cells that stand up the follicle
27
Nail
Scale like modification of the epidermis
28
Nail root
Proximal end covered by skin
29
Nail body
Visible portion
30
Nail fold
Skin covering the lateral ends of the nail
31
Nail groove
Holds the edge of the nail in place
32
Free edge
Portion of the nail extending past the finger tip
33
Eponychium (cuticle)
Stratum corneum of nail fold that has grown over the nail body
34
Lunula
Crescent shaped area above the cuticle
35
Nail bed
Deeper layers of the epidermis extending beneath the nail
36
Nail matrix
The proximal portion of the nail be
37
Meissner's corpuscles
Touch receptor in dermis
38
Nociceptors
Pain receptor in dermis
39
Thermoceptors
Temperature receptors in Deimos
40
Pacinian corpuscles
Pressure receptors in dermis
41
Integumentary system functions
Protection Body temperature regulation Sensation
42
Protection
Chemical barrier Physical barrier Biological barrier
43
Basal cell carcinoma
Least malignant Most common Begins in the stratum basale Tissue destruction produces an ulcer Surgical removal or radiation therapy
44
Squamous cell carcinoma
Cells in the stratum spinosum continue unregulated cell growth Rarely the tumor migrates from the epidermis to the dermis and can metastasize
45
Malignant melanoma
Least common Arises from melanocytes Develops as a large, flat, spreading sore, or a lump under the skin Metastasis is common, usually fatal
46
1st degree burn
Only on the epidermis Red and painful Heals in a week without scarring
47
2nd degree burn
``` Epidermis and dermis are damaged Red and painful Edema (swelling) usually develops Blisters develop Heal in 1-2 weeks, scarring depends on extent of dermal damage ```
48
3rd degree burn
Epidermis and dermis are completely destroyed Skin can only regenerate from the edges Skin grafts are often necessary

Spring of 2012 (56 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions