The Integumentary System

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139 terms · Flashcard deck based on notes for the integumentary system

True

True or False: the skin is an organ.

Protects, regulates temperature, houses sensory receptors, synthesizes chemicals and excretes waste.

List the 5 functions of the skin.

Skin and accessory organs

The integumentary system is composed of ____ and _____

Radiation of heat through subcutaneous dilated blood vessels, evaporation of perspiration on the surface of the skin, and convection and conduction of heat directly through the skin.

List the 3 ways that the body eliminates excessive heat.

True

True or False: Keratin is a chemical synthesized by the skin.

d. all of the above

Which of the following demonstrates how the skin acts to protect the body: a. it is not easily damaged b. it contains the internal organs c. it acts as a physical barrier between the inside and outside of the body d. all of the above.

Stratum basale and stratum spinosum

What two layers of the epidermis make up the stratum germinativum?

Mitosis

What function do the cells in the stratum germinativum perform that other layers of skin do not?

Stratum Basale

the deepest layer of the skin.

False

True or False: the stratum basale is still slightly mitotic.

Stratum Basale

In which layer of the epidermis does the synthesis of keratin occur?

Keratin

A chemical produced by the skin that makes the skin tough, resistant to abrasion and waterproof.

Keratin

What gives the stratum spinosum a slightly spiney look?

4 / 5

How many layers are present in thin skin vs thick skin

Stratum lucidum

Present in only the thickest skin

Keratin

In the stratum granulosum, cells have accumulated enough _____ in them that they start to become distinctive.

Palms of the hands and soles of the feet

What two areas of the body present with stratum lucidum?

Stratum Corneum

Layer of the skin that is composed of 20-30 layers of flattened, keratinized dead cells.

Connective tissue, housing muscle fibers, blood vessels, hair follicles, exocrine glands and sensory nerve fiber

List the 6 components of the Dermis.

B

How many layers are present in the Dermis? A. 1 B. 2 C. 3 D. 4

Papillary Layer

Layer of Dermis directly underlying the epidermis.

Papillary Layer

Which layer of the dermis contains dermal ridges?

Fingerprints

_____ are an example of dermal ridges

True

True or False: Dermal ridges are caused by the pulling of elastic fibers in the papillary layer.

False

True or False: Stretch marks are caused by accumulating tears in the papillary layer

Reticular Layer

Layer of Dermis composed of dense irregular connective tissue underlying the papillary layer.

True

True or False: the dense irregular tissue in the reticular layer is composed of large diameter collagen fibers.

True

True or False: Stretch marks occur in the reticular layer.

Distensible and resilient

List two characteristics of the reticular layer.

Reticular layer

This layer of skin is responsible for giving skin its elasticity.

Subcutaneous Layer

Layer of skin made up of loose connective tissue and adipose tissue interlaced with blood vessels.

Heat insulator and energy reservoir

Adipose tissue serves what two functions?

Energy

The adipocytes in adipose tissue can be used for _____

True

True or False: the adipose tissue conserves internal body heat and/or impedes the entrance of external heat.

False

True or False: there is no distinction in the adipose tissue distribution between men and women.

True

True or False: thickness of the subcutaneous layer can be indicative of nutritional status.

Sexual Dimorphism

The term that indicates sexual differences (differences between men and women).

Superficial Fascia

_____ binds the skin to underlying organs.

C

A genetic defect in the process that manufactures melanin is known as: a. Cancer b. melatinosis c. albinism d. freckles

Blood flow, carotene, thicker stratum corneum and melanin

List 4 things that affect the color of the skin.

False

True or False: Carotene is a yellowish pigment produced by cells found in the stratum basale.

Diet

Carotene is acquired through _____

Thicker stratum corneum

People of Asian descent generally have a yellowish pigment to their skin because they have ____

Melanin

The brown-black pigment produced in the stratum basale.

True

True or False: Everyone has approximately the same number of melanocytes

Freckles

Small, isolated patches of highly concentrated melanin secretions are known as _____

True

True or False: skin color functions in part to show both age differences and sexual dimorphism.

Increased

Darkest skin tones are found in areas of increased or decreased sunlight?

Mitosis

What process does melanin protect?

True

True or False: the presence of a thicker stratum corneum will protect the skin in ways similar to melanin.

Tanning

Melanocytes response to increased amounts of ultraviolet radiation.

Vitamin D

Production of _____ is dependent upon sufficient amounts of UV radiation reaching the dermis to facilitate this process.

Decreases

In areas of low UV production, dark skin increases or decreases the production of vitamin D.

True

True or False: vitamin D is necessary for bone growth

Rickets / Osteomalacia

Vitamin D deficiency will produce _____ in children and _____ in adults.

Mineral content

Vitamin D maintains the _____ of the skeleton.

False

True or False: light skin tones are more susceptible to frostbite.

Light / Dark

_____ colored skin tends to appear more frequently in higher latitudes because _____ colored skin is more susceptible to damage by extreme cold.

Accessory

The hair and the hair follicle are _____ integumentary organs.

True

True or False: the hair and the hair follicle reside in the dermis and subcutaneous layer but originate from the epidermal tissue.

Follicle

_____ houses the hair

False

True or False: the follicle is a hollow tube originating from the dermis and subcutaneous layer.

Root, Bulb and Shaft

List the 3 parts of the hair.

Bulb

Deepest zone, zone of actively dividing cells at the base of the hair.

Root

a column of flattened, dead keratinized cells within the follicle, still imbedded within the skin.

Shaft

a column of flattened dead keratinized cells external to the skin's surface.

Shaft / Root

In a hair follicle, the _____ is external to the skin's surface while the _____ is still imbedded within the skin.

Arrector pili muscle

Muscle responsible for the production of goose bumps.

B

The contraction of the arrector pili muscle is a. voluntary b. involuntary c. mostly voluntary

Iron

The red coloration of hair is due to the pigment containing _____

True

True or False: Grey hair is a combination of both pigmented and unpigmented hairs

Melanocytes

The pigmentation of hair is based upon _____ located in the base of the hair bulb.

Protection and Identification

List the 2 functions of hair

Signifies age, sex, and the individual

In what ways does hair act as an identifier?

True

True or False: Sexual dimorphism is present in the production of hair.

False

True or False: Humans do not greatly differ in their degree of hairiness based on geographic distribution.

Modified hardened stratum corneum

The nail plate is composed of _____.

Nail root, nail body and free edge

List the 3 parts of the nail plate

Stratum basale and stratum spinosum

The nail bed is located in what two layers of skin?

Dermis and subcutaneous layer

What two layers of skin are located under the nail bed?

Mitosis

What regenerative process occurs within the root of the nail?

Lunula

The light half-moon region of the nail plate is called _____

Lunula

The _____ appears to be white because the underlying nail bed is so thick.

True

True or False: only primates have nails.

Protection and dexterity

List the two functions of the nail.

Neoplasm

Any kind of abnormal proliferation of cells.

Long Term

Cutaneous carcinoma is thought to be due to long or short term exposure to UV radiation.

Cutaneous carcinoma and Cutaneous melanoma

List two types of neoplasms that are malignant.

Basal cell carcinoma and squamous cell carcinoma

List two types of Cutaneous carcinomas.

Less / more

Basal cell carcinoma is _____ harmful while squamous cell carcinoma is _____ harmful.

True

True or False: Squamous cell carcinoma is more harmful because it is more likely to metastasize.

Cutaneous Melanoma

Melanoma that has become malignant is known as _____.

B

Cutaneous melanoma is due to _____ periods of exposure to UV radiation: a. long but moderate b. short but intense c. long and intense d. short and moderate

Malignant / benign

Neoplasms are either _____ (life threatening) or _____ (not life threatening)

Epithelial

Tissue that is most susceptible to neoplasms is known as _____ tissue.

False (mitotic)

True or False: Epithelial tissue is most susceptible to neoplasms because of the amount of meiotic activity occurring in the tissue.

C.

Which of the following are most likely to become cancerous: a. freckles b. birth marks c. moles d. warts

Asymmetry, (irregular) Borders, (abnormal and/or multiple) Colors, (increasing or large) Diameter, Evolution

What is the ABCDE rule for identification of Cutaneous melanoma?

False (Cutaneous melanoma)

True or False: the ABCDE rule is used to identify possible Cutaneous carcinomas.

Mole

A benign growth of pigmented melanocytes

Wart

An abnormal growth of skin tissue caused by viral infection

Nevus

Another word for mole is _____

Verruca

Another word for wart is _____

Sweat does not evaporate as easily.

Why is heat stroke more of a concern in areas of high humidity?

Dietary deficiencies

Changes in the texture of your hair, the hardness of your nails and the texture of your skin might be a clinical indicator of _____.

Hair and Nails

Heavy metals concentrate in what two accessory organs of the integumentary system?

Rash

An example of a clinical indicator of allergies in the integumentary system is _____

Jaundice

Specific diseases may be indicated by changes in the integumentary system. _____ is an example of a visible change to the skin that indicates a disease present in the liver.

Wrinkles

Loss of elasticity in the dermis and a decrease in the amount of adipose tissue together create _____.

Adipose

Increasing sensitivity to cold temperatures indicates a decrease in the _____ tissue

Eccrine

A decrease in perspiration in the _____ gland impacts the body's response to increasing temperatures.

True

True or False: Aging produces a decrease in the activity of the sebaceous gland (resulting in the decreased production of sebum).

False (men and women experience thinning hair as a result of aging)

True or False: the thinning of hair in men is an example of sexual dimorphism in aging.

Dermis loses elasticity, skin as a whole thins out (loss of adipose tissue), decreased activity in hair follicles and exocrine glands (loss of pigmentation in hair), and an increase in number of moles

List 4 signs of aging indicated by the integumentary system.

Reticular

Loss of elasticity in the dermis occurs as the collagen fibers in the _____ layer lose elasticity.

Iron deficiency anemia

Pale skin and spoon nails are a clinical indicator of _____.

Exocrine

Integumentary glands are exocrine or endocrine in structure and function.

Holocrine gland, secretes sebum, compound alveolar shape, connected to the hair follicle

List 4 characteristics of the Sebaceous gland.

Acne

Clogged sebaceous ducts result in _____.

Sebum

A substance secreted by the sebaceous gland which lubricates and waterproofs the hair and skin.

True

True or False: sebum has antibacterial and antifungal properties

Axillary and Pubic

The apocrine gland is concentrated in the _____ and _____ regions.

Odiferous apocrine gland, secretes sweat, tubular in shape and connected to the hair follicle

List 4 characteristics of the Apocrine gland.

Merocrine gland, secretes sweat, tubular in shape, exits directly onto the skin

List 4 characteristics of the Eccrine gland.

C

Which of the following is the primary component of evaporative cooling: a. sebaceous gland b. apocrine gland c. eccrine gland d. lunula

True

True or False: the eccrine gland helps to keep the body cool by cooling blood vessels in the dermis via sweating.

Eccrine

The _____ gland is known as the "True" sweat gland.

D

Which of the following gland(s) is under the influence of the sex hormones: a. sebaceous b. apocrine c. eccrine d. sebaceous and apocrine e. apocrine and eccrine

Hair (and the hair follicle), Nails, Glands, and Cutaneous sensory receptors

Name the 4 accessory integumentary organs.

Stratum Basale and Stratum Spinosum

When a cut is superficial and involves only the epidermis it results in greater mitotic activity in the ____ and the ____.

Epidermis, Dermis and/or Subcutaneous Layer

Wounds that cause the rupture of blood vessels with resultant bleeding may involve which 3 layers of skin?

Blood Platelets and fibrinogen proteins

_____ and _____ form a clot which stops bleeding in a wound that involves the dermis and/or the subcutaneous layer.

True

True or False: in a bleeding wound, blood vessels bring immune cells into a wound as they attempt to reconnect.

Fibroblasts

_____ manufacture new connective tissue and collagen fibers to help bind wounds together.

False (epidermis only)

True or False: in a first degree burn, the epidermis and the dermis are damaged.

Accessory Organs

What is not damaged in a 2nd degree burn?

False (2nd Degree)

True or False: In a 3rd degree burn you may see little islands of healing within the perimeters as the glands have remained in-tact.

Peeling / Blistering

_____ is a characteristic of a 1st degree burn while _____ is a characteristic of a 2nd degree burn.

True

True or False: a 3rd degree burn victim may not feel pain immediately as the pain receptors in the skin have been destroyed.

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