Chapter 5 - Integumentary

Question 1

How many hairs are on the human head?

Answer 1

• Approximately 120,000 hairs on the average head.

Question 2

Hair grows _____ cm each month.

Answer 2

• 1cm per month.

Question 3

Nails grown about ___ cm per week.

Answer 3

• 0.5mm per week.

Question 4

______ have the thinnest skin.

Answer 4

• Eyelids

Question 5

Integumentary system includes:

Answer 5

• Skin
◊ Accessory Structures:
• Nails (fingers and toes)
• Hair
• Sensory Receptors
• Sebaceous (oil) glands
• Sweat glands

Question 6

Functions of the skin:

Answer 6

• Shielding internal organs
• Blocking the infiltration of pathogens and water
• Providing temperature control
• Maintaining homeostasis
• Accumulating vitamin D
• Senses tactile objects - the sense of touch

Question 7

The ____, ____, and ____ tissue layers of the skin reduce internal injury.

Answer 7

• epidermis, dermis, and fatty tissue

Question 8

The protective layers of the skin prevent:

Answer 8

• Viruses and bacteria from invading the internal organs and bloodstream as well as an over-accumulation of water.

Question 9

The body is better able to regulate its ______ thanks to the protective layer of the skin.

Answer 9

• Temperature

Question 10

Layers of the skin:

Answer 10

• Epidermis
• Dermis
• Subcutaneous tissue

Question 11

Epidermis:

Answer 11

• Outermost layer of the skin
• Made up of levels of epithelial cells
• No blood vessels present
• Contains special cells known as melanocytes

Question 12

_______ create melanin that determines skin color.

Answer 12

• Melanocytes

Question 13

Blood vessels, nerves, glands, hair follicles and lymph channels are all located in ______.

Answer 13

• Dermis

Question 14

What is the sturdy collagenous layer that connects the epidermis to the fatty tissue layer?

Answer 14

• Dermis

Question 15

Subcutaneous tissue layer:

Answer 15

• Fastens the skin to the underlying elements of the anatomy

* Also called fatty tissue, or hypodermis

Question 16

An inflammatory disease of the sebaceous follicles of the skin, marked by comedones, papules, and pustules. Usually affects the face, chest, back, and shoulders.

Answer 16

• Acne Vulgaris

Question 17

Loss of hair; baldness is called ________.

Answer 17

• Alopecia

Question 18

Smooth muscles of the skin, when they contract they cause the hair to stand erect, producing the appearance called goose flesh/goose bumps.

Answer 18

• Arrector pili

Question 19

Fungus infection between the toes in which the skin becomes itchy and sore, cracking and peeling away.

Answer 19

• Athlete’s foot

Question 20

Term for not vascular; bloodless is ________.

Answer 20

• Avascular

Question 21

A neoplasm of the skin derived from basal cells of the epidermis or hair follicles is called ________.

Answer 21

• Basal Cell Carcinoma

Question 22

______ are bacterial infections of hair follicles and surrounding skin; sometimes called furuncles.

Answer 22

• Boils

Question 23

______ is the outer layer of an organ.

Answer 23

• Cortex

Question 24

______ is a chronic ulcer that appears in pressure areas of skin, also called “bed sores”.

Answer 24

• Decubitus ulcer

Question 25

______ is inflammation of the skin.

Answer 25

• Dermatitis

Question 26

The sensitive connective tissue layer of the skin located below the epidermis, containing nerve endings, sweat and sebaceous glands, and blood and lymph vessels is called ______.

Answer 26

• Dermis

Question 27

A superficial inflammatory process involving primarily the epidermis, marked early by redness and itching is called ______.

Answer 27

• Eczema

Question 28

______ is the outermost and nonvascular layer of the skin.

Answer 28

• Epidermis

Question 29

A _____ degree burn is a mild, fully recoverable degree of burning causing only redness of the skin.

Answer 29

• First Degree Burn

Question 30

A _____ degree burn is a burn that blisters the skin.

Answer 30

• Second degree burn

Question 31

A _____ degree burn is a burn involving destruction of the entire skin; extending into subcutaneous tissue, muscle, or bone and often cause much scarring.

Answer 31

• Third degree burn

Question 32

_____ is a sexually transmitted disease caused by a herpesvirus, characterized by the formation of fluid-filled, painful blisters in the genital area.

Answer 32

• Genital Herpes

Question 33

One of the tubular invaginations of the epidermis enclosing the hairs, and from which the hairs grow is called _____.

Answer 33

• Hair follicle

Question 34

Any inflammatory skin disease caused by a herpesvirus and characterized by formation of small vesicles in clusters is called:

Answer 34

• Herpes

Question 35

_____ is greatly increased temperature; can be called fever or hyperpyrexia.

Answer 35

• Hyperthermia

Question 36

_____ is a potentially fatal condition, occurs when body temperature falls below 95°F (35°C).

Answer 36

• Hypothermia