Integumentary System

Question 1

Avascular, keratinized stratified squamous epithelium layer of skin is ______.

Derived from _____

Answer 1

Epidermis

Ectoderm

Question 2

Highly vascular, connective tissue layer of skin is _____.

derived from ______

Answer 2

Dermis

Mesoderm

Question 3

Adipose tissue layer deep to skin

Answer 3

Hypodermis/Subcutaneous layer

Question 4

Hairless skin found on palms and soles only?

Number of layers?

Answer 4

Thick skin

5

Question 5

Skin with hair follicles?

Number of layers?

Answer 5

Thin Skin

4

Question 6

Epidermis layers (deep to superficial)

Answer 6

1. Stratum Basale
2. Stratum Spinosum
3. Stratum Granulosum
4. Stratum Lucidum (thick skin only)
5. Stratum Corneum

“Bad Sprinters Get Leg Cramps”

Question 7

Keratinocytes (___%) produce ____ and form a _____.

Answer 7

85%

Keratins

Water Barrier

Question 8

Melanocytes (__%) produce _____ that are made and stored in _____.

These rounded cell bodies are in the _____ and the long processus extend between keratinocytes in the ______

Answer 8

5%

Melanin (pigment)

Melanosomes

Stratum Basale

Stratum Spinosum

Question 9

Langerhans’ cells (__%) are _____ cells

Answer 9

2-5%

Antigen-presenting

Question 10

Merkel’s Cells (__%) are ____ cells

Answer 10

6-10%

Mechanoreceptor

Question 11

Keratins form filaments called ____/_____/_____

Answer 11

Keratin filaments

Intermediate Filaments

Tonofilaments

Question 12

Keratinocytes participate in formation of water barrier via production of _____

Answer 12

Lamellar Bodies

Question 13

Mitotically active layer of epidermis (stem cells -> keratinocytes); production of intermediate (keratin) filaments begins here

Answer 13

Stratum Basale

Question 14

Cytoplasmic processes for attachment via desmosomes in this epidermis layer called ______.

Intermediate filaments here are grouped into bundles called _____.

Production of _____ and _____ also begins in this layer.

Answer 14

Stratum Spinosum

Tonofibrils

Keratohyalin Granules
Lamellar Bodies

Question 15

This epidermis layer known as _____ is intensely basophilic.

It contains _____ that bundle tonofilaments into tonofibrils

Here, conversion of granular cells into cornified cells happens (AKA ____)

____ are also release here.

Answer 15

Stratum Granulosum

Keratohyalin Granules

Keratinization

Lamellar Bodies

Question 16

Cells are sloughed off at this epidermal layer known as _____

Answer 16

Stratum Corneum

Question 17

Accumulates over keratinocyte nuclei to protect DNA from UV radiation

Answer 17

Melanin

Question 18

Langerhans’ Cells are found within the _____ and derived from ____

Answer 18

Stratum Spinosum

Bone marrow

Question 19

Merkel’s Cells are located within the ____ and form ____ with afferent nerve fibers

Answer 19

Stratum Basale

Merkel’s Corpuscle

Question 20

Most common skin cancer. Slow growing tumor. Resembles cells of stratum basale.

Answer 20

Basal Cell Carcinoma

Question 21

Second most common skin cancer. Highly atypical cells at all epidermis levels.

Answer 21

Squamous Cell Carcinoma

Question 22

Most serious skin cancer. Melanocyte origin. Irregularly pigmented, multicolor lesion.

Answer 22

Malignant Melanoma

Question 23

Loose connective tissue layer of Dermis known as ____ with finger-like protrusions known as _____

Answer 23

Papillary Layer

Dermal Papillae

Question 24

Dense irregular connective tissue Dermis layer

Answer 24

Reticular Layer

Question 25

Ovoid structures found in dermis and hypodermis? Contains a myelinated nerve ending surrounded by a capsule consisting of _____. Function?

Answer 25

Pacinian Corpuscles Concentric Lamellae Detects pressure/vibration

Question 26

Meissner's Corpuscles are located within dermal papillae of _____. Flattened ____ form lamellae. Function?

Answer 26

Hairless skin Schwann cells Detect light touch

Question 27

Smooth muscle that causes hair to stand on end (goosebumps). ____ innervation Function?

Answer 27

Arrector Pili Muscle Sympathetic Insulation

Question 28

Apocrine and Eccrine glands are both _____ secretion types

Answer 28

Merocrine (exocytosis)

Question 29

Temp regulation and waste removal gland

Answer 29

Eccrine Sweat Gland

Question 30

This gland is stimulated during emotional stress and sexual excitement

Answer 30

Apocrine Sweat gland

Question 31

This gland is found throughout most skin, especially forehead/palms/soles

Answer 31

Eccrine Sweat Gland

Question 32

This gland is found in skin of axilla, perineal, beard regions

Answer 32

Apocrine Sweat glands

Question 33

This Sudoriferous Gland is found mostly in deep dermis

Answer 33

Eccrine Sweat Gland

Question 34

This Sudoriferous gland is found mostly in subcutaneous layer

Answer 34

Apocrine Sweat gland

Question 35

This Sudoriferous gland secretes to the surface of epidermis

Answer 35

Eccrine Sweat Gland

Question 36

This Sudoriferous gland secretes into hair follicle

Answer 36

Apocrine Sweat Gland

Question 37

This Sudoriferous gland produces viscous, protein-rich sweat

Answer 37

Apocrine Sweat Gland

Question 38

This Sudoriferous gland begins function soon after birth

Answer 38

Eccrine Sweat Gland

Question 39

This Sudoriferous gland functions during/after puberty

Answer 39

Apocrine Sweat Gland

Question 40

Body odor results from _____

Answer 40

Surface Bacterial breakdown of apocrine sweat

Question 41

This gland is found everywhere but thick skin because it secretes into hair follicles. Involved in acne development. Type of secretion?

Answer 41

Sebaceous (Oil) Gland Holocrine (apoptosis) secretion of sebum