Histo- Integumentary System

Question 1

Superficial layer of the skin. It is derived from___________.

Answer 1

Epidermis

Ectoderm

Question 2

Deep layer of the skin. It is derived from___________.

Answer 2

Dermis

Mesoderm

Question 3

The hypodermis consists of this type of tissue. Is it vascularized or non-vascularized?

Answer 3

Adipose

Vascularized

Question 4

Cell of the dermis that participates in the formation of water barrier.

Answer 4

Keratinocytes

Question 5

What is the most common type of cell is found in the epidermis?

Answer 5

Keratinocytes

Question 6

Pigment producing cells of the epidermis.

Answer 6

Melanocytes

Question 7

Antigen presenting cells of the immune system found in epidermis cells.

Answer 7

Langerhan’s cells

Question 8

Mechanoreceptor cells associated with sensory nerve endings in the epidermis.

Answer 8

Merkel’s cells

Question 9

Where is thick skin found?

Answer 9

Palms of hands and soles of feet

Question 10

Areas that are hairless and subjected to the most abrasion have this type of skin.

Answer 10

Thick skin

Question 11

What type of skin is found everywhere except soles of feet and palms of hands?

Answer 11

Thin skin

Question 12

How many layers does thin skin have?

What are they?

Answer 12

4
Basale
Spinosum
Granulosum 
Corneum

Question 13

How many layers does thick skin have?

What are they?

Answer 13

5
Basale 
Spinosum 
Granulosum 
Lucidum 
Corneum

Question 14

Major structural protein of the epidermis

Answer 14

Keratinocytes

Question 15

Keratinocytes form intermediate filaments that are also known as these

Answer 15

Tonofilaments

Question 16

Keratinocytes participate in the formation of a water barrier via the production of these.

Answer 16

Lamellar bodies

Question 17

Tubular shaped membrane bound organelles that contain lipids.

Answer 17

Lamellar bodies

Question 18

Mitotically active layer of the epidermis

Answer 18

Stratum basale

Question 19

What type of cells are found in the stratum basale

Answer 19

Cuboidal/columnar

Basophillic

Question 20

Two principle layers of the skin

Answer 20

Epidermis

Dermis

Question 21

Superficial layer of the skin. It is derived from___________.

Answer 21

Epidermis

Ectoderm

Question 22

Deep layer of the skin. It is derived from___________.

Answer 22

Dermis

Mesoderm

Question 23

The hypodermis consists of this type of tissue. Is it vascularized or non-vascularized?

Answer 23

Adipose

Vascularized

Question 24

Cell of the dermis that participates in the formation of water barrier.

Answer 24

Keratinocytes

Question 25

What is the most common type of cell found in the epidermis?

Answer 25

Keratinocytes

Question 26

Pigment producing cells of the epidermis.

Answer 26

Melanocytes

Question 27

Antigen presenting cells of the immune system found in epidermis cells.

Answer 27

Langerhan's cells

Question 28

Mechanoreceptor cells associated with sensory nerve endings in the epidermis.

Answer 28

Merkel's cells

Question 29

Where is thick skin found?

Answer 29

Palms of hands and soles of feet

Question 30

Areas that are hairless and subjected to the most abrasion have this type of skin.

Answer 30

Thick skin

Question 31

What type of skin is found everywhere except soles of feet and palms of hands?

Answer 31

Thin skin

Question 32

How many layers does thin skin have? | What are they?

Answer 32

``` 4 Basale Spinosum Granulosum Corneum ```

Question 33

How many layers does thick skin have? | What are they?

Answer 33

``` 5 Basale Spinosum Granulosum Lucidum Corneum ```

Question 34

Major structural protein of the epidermis

Answer 34

Keratinocytes

Question 35

Keratinocytes form intermediate filaments that are also known as these

Answer 35

Tonofilaments

Question 36

Keratinocytes participate in the formation of a water barrier via the production of these.

Answer 36

Lamellar bodies

Question 37

Tubular shaped membrane bound organelles that contain lipids.

Answer 37

Lamellar bodies

Question 38

Mitotically active layer of the epidermis

Answer 38

Stratum basale

Question 39

What type of cells are found in the stratum basale

Answer 39

Cuboidal/columnar | Basophils can

Question 40

Two principle layers of the skin

Answer 40

Epidermis | Dermis

Question 41

Cell processes of stratum spinous are connected to those of adjacent cells by these

Answer 41

Desmosomes

Question 42

This contributes to the spiny/prickly appearance of the stratum spinous my cells

Answer 42

Expanded Intercellular spaces between spines left after histological preparation.

Question 43

Keratin intermediate filaments group in bundles called

Answer 43

Tonofibrils

Question 44

The production of keratohyalin granules and lamellar bodies begin in this layer of the epidermis

Answer 44

Stratum spinous

Question 45

Lamellar bodies are released within this layer of the epidermis

Answer 45

Stratum granulosum

Question 46

The initiation of the conversion of granular cells into cornfield cells is called

Answer 46

Keratinization

Question 47

Epidermal layer that is only found in thick skin

Answer 47

Stratum lucidum

Question 48

Epidermal layer where the cells lose nuclei and cytoplasmic organelles.

Answer 48

Stratum corneum

Question 49

Cells of this layer of the epidermis slough off at the surface.

Answer 49

Stratum corneum

Question 50

Cells of this layer of the epidermis are actively mitotic stem cells.

Answer 50

Stratum basale

Question 51

Cells of this layer of the epidermis contain thick bundles of intermediate filaments made up of pre-keratin.

Answer 51

Stratum spinous

Question 52

Cells in this layer of the epidermis are flattened. Organelles deteriorate, and the cytoplasm is full of lamellar granules and keratohyaline granules.

Answer 52

Stratum granulosum

Question 53

Cells in this layer of the epidermis are dead.

Answer 53

Stratum corneum

Question 54

Melanin accumulates over nuclei to protect DNA from this

Answer 54

UV radiation

Question 55

Epidermal cell that are dendritic and have long processes that extend between keratinocytes within the stratum spinous

Answer 55

Melanocytes

Question 56

The cell bodies of melanocytes are found in this epidermal layer

Answer 56

Stratum basale

Question 57

Langerhan's cells are derived from this

Answer 57

Bone marrow

Question 58

Langerhan's cells present processed antigens to these within nearby lymph nodes

Answer 58

T lymphocytes

Question 59

Disc like terminal of afferent nerve fibers of Merkel's cells

Answer 59

Merkel's corpuscle

Question 60

Merkel's cells contain these

Answer 60

Neurosesecretory granules

Question 61

Most common type of skin cancer

Answer 61

Basal cell carcinoma

Question 62

Type of skin cancer characterized by highly atypical cells at all levels of the dermis

Answer 62

Squamous cell carcinoma

Question 63

Most serious form of skin cancer. Presents as irregularly pigmented, multi color lesion.

Answer 63

Malignant melanoma

Question 64

What type of cells does malignant melanoma originate from

Answer 64

Melanocytes

Question 65

Dermis layer made up of loose connective tissue

Answer 65

Papillary

Question 66

Finger like connective tissue protrusions that protrude into the epidermis.

Answer 66

Dermal papillae

Question 67

Layer of the dermis that contains nerve endings and blood vessels

Answer 67

Papillary layer

Question 68

Layer of the dermis that is dense irregular connective tissue

Answer 68

Reticular layer

Question 69

Large ovoid structures found in the dermis and hypodermis.

Answer 69

Pacinian corpuscles

Question 70

What is the function of pacinian corpuscles?

Answer 70

Detect deep pressure and vibration

Question 71

Tapered, cylindrical structures located within the dermal papillae of hairless skin.

Answer 71

Meissner's corpuscles

Question 72

These form the lamellae of Meissner's corpuscles

Answer 72

Flattened Schwann cells

Question 73

What is the function of Meissner's corpuscles?

Answer 73

Detect light touch

Question 74

Elongated, filamentous, keratinized structures that project from follicles in the epidermis

Answer 74

Hair

Question 75

This is responsible for the production and growth of hair

Answer 75

Hair follicles

Question 76

Hair follicles are not associated with this type of skin

Answer 76

Thick

Question 77

Smooth muscle connecting connective tissue sheath surrounding hair follicle to papillary layer of the dermis

Answer 77

Arrector pili muscle

Question 78

Contraction of arrector pili muscles cause hair to do this.

Answer 78

Stand on end, resulting in goosebumps

Question 79

Muscle that has a role in insulation and is innervated by sympathetic nerves

Answer 79

Arrector pili

Question 80

Widely distributed gland that is part of merocrine secretion and excretes wastes and excess salts

Answer 80

Eccrine sweat glands

Question 81

Where are eccrine glands located

Answer 81

Deep in dermis or upper part of hypodermis

Question 82

Type of cells in the ducts of eccrine cells

Answer 82

Stratified cuboidal epithelium

Question 83

Glands that are found in the axiallary and perineal regions of the body.

Answer 83

Apocrine sweat glands

Question 84

When do apocrine cells become functional?

Answer 84

Puberty

Question 85

What causes the odor associated with apocrine glands

Answer 85

They secrete viscous, protein rich sweat. When the proteins start to breakdown due to bacteria, this causes the odor.

Question 86

Where do apocrine sweat glands empty into

Answer 86

Follicle canal

Question 87

What is the function of eccrine sweat glands

Answer 87

Regulation of body temperature and waste removal

Question 88

Lipid containing substance produced and secreted by oil glands

Answer 88

Sebum

Question 89

Type of gland that plays a role in acne production

Answer 89

Sebaceous

Question 90

What type of secretion do sebaceous glands do

Answer 90

Holocrine