Integumentary System Assignment 3

The layer of the epidermis just deep to the stratum granulosum a. does not have living keratinocytes b. is where all melanocytes are located c. has a unique "prickly" appearance upon microscopy d. has a thickness that allows us to recognize thick or thin skin

C

Which of the following is not a primary function of the integumentary system? a. temperature regulation b. excretion c. absorption d. vitamin D production e. sensation f. protection

C

Which of the following would not be found in the epidermis? a. Merkel cell b. Langerhans cell c. Meissner's cell d. Melanocyte

C

Another name for the cuticle is the ______________.

Eponychium

TRUE or FALSE: The integument is the same relative thickness throughout the body.

False

Name the two layers of the dermis

Papillary layer & Reticular layer

TRUE or FALSE: The hypodermis, largely composed of adipose tissue, is the deepest part of the integument

True

The glands of the axilla and areola

apocrine

Name the glands associated with a hair follicle

apocrine, sebaceous

The superficial layer of the skin is called the _________. It is composed of the tissue ____________.

epidermis keratinized stratified squamous epithelial tissue

The glands of the integument are derived from __________ tissue and have ducts so they are _________ glands.

epithelial exocrine

The medulla of the hair is deep to the________.

hair cortex

The ________________ is another name for the skin.

integument

The primary cell type of the epidermis is the ________.

keratinocyte

The skin would be considered a(n) _______________ in our "structural levels of organization".

organ

Holocrine secretion

sebaceous

Simple alveolar glands

sebaceous

Soften/lubricate the skin

sebaceous

The "oil glands"

sebaceous

The integumentary system includes (4 items)

skin, hair, nails, glands

Name the layers of the epidermis in thick skin

stratum corneum stratum lucidum stratum granulosum stratum spinosum stratum basale

What is the correct order of stratums from superficial to deep?

stratum corneum, stratum lucidium, stratum granulosum, stratum spinosum, stratum basale

Assist with temperature regulation

sudoriferous

The 'sweat glands'

sudoriferous

The __________ found in the stratum ____________ layer of the epidermis are connected to free nerve endings and respond to touch stimuli.

tactile epithelial cells, basale

Connective Tissue sheath

the 'external root sheath' or blue area

epithelial root sheath

the 'internal root sheath' or the peach area

Name some structures/regions composed of dead keratinized epithelial cells:

toe, fingernails, external surface of hair shaft

For spring break you go to South Padre Island and spend the days lying out on the beach. You forget to put on sunscreen and return to school with some red areas of skin, some blistered skin, and some "tanned" skin. Based on what you have learned about the skin, which of the following would be incorrect? a. your exposure to the sun increased the number of melanocytes you have b. the blistered areas of skin have second degree burns c. melanin is the pigment which causes your skin to darken upon exposure to the sun d. the reddened areas of skin have first degree burns

A

The papillary layer of the dermis a. is thrown into ridges b. is composed of reticular connective tissue c. is composed of dense irregular CT d. is avascular

A

Mammary and ceruminous glands are modifications of these

Apocrine

Which of the following is incorrect: a. keratinocytes in the stratum spinosum have lost their nuclei b. keratinocytes are dependent upon diffusion for their nutrient supply c. keratinocytes in the stratum basale are going through mitosis d. keratinocytes in the stratum corneum form the apical region of the epithelial tissue

A

The middle layer of the epidermis in thick skin a. is a clear layer b. is where keratin granules are seen c. is where Langerhan's cells are found d. is one of the thickest layers

B

Which of the following is INCORRECT regarding melanocytes? a. every human has approximately the same number of these cells b. the melanin produced by these cells remains in the melanocytes c. melanocytes increase melanin production in response to UV radiation d. abnormal growth of these cells leads to an aggressive form of skin cancer

B

Which of the following statements would be incorrect regarding the skin? a. the hypodermis is not part of the skin b. the skin is a mucous membrane c. the superficial portion is composed of epithelial tissue d. the deeper region is largely composed of CT

B

The arrector pili muscle a. is attached to eccrine glands in the integument b. is composed of striated muscle c. will be found in the hypodermis d. none of the above are correct

D

The reticular layer of the dermis a. is composed of loose CT proper b. has no hair follicles located here c. is the thinnest region of the dermis d. is just superficial to the subcutaneous tissue

D

The _________ typically found in the stratum __________ layer of the epidermis are a type of macrophage.

dendric cells spinosum

The hair root papillae is derived from the ________.

dermis

Empty into pores on the skin, abundant on palms/soles

eccrine

Most numerous sweat gland

eccrine

Simple coiled tubular gland

eccrine, apocrine, sudoriferous