Assessing The Integumentary System Flashcards
● Heaviest single organ of the body
● 16% of body weight
● Includes appendages such as hair follicles and sebaceous glands
Skin
● Three layers: epidermis, dermis, subcutaneous layers
● Protect underlying structures from physical trauma and UV radiation
● Essential in maintaining body temperature, fluid and sensation
● Involved in absorption and excretion, immunity, and synthesis of vitamin D from the sun
Skin
Layers of the Skin
- Epidermis
- Dermis
- Subcutaneous Layer
Identify the Layer of Skin
● Outer visible layer
● Avascular
● Contains keratin
Epidermis
Identify the Layer of Skin
● Made up of proteins and mucopolysaccharides
● Contains nerve tissues, blood vessels,
sweat and sebum glands, and hair follicles
Dermis
Identify the Layer of Skin
● Made up of fatty connective tissue
Subcutaneous Layer
● Made up of keratinized cells
● Grows from hair follicles supplied by blood vessels
● Types: Vellus and Terminal hair
● Provides protection by covering the scalp and filtering dust and debris away from the nose, ears, and eyes
Hair
Types of Hair
- Vellus hair
- Terminal hair
Identify the types of Hair
● Short, pale, and fine hair
Vellus hair
Identify the types of Hair
● Dark and coarse
● Found on the scalp, brows, legs, axillae
and perineum
Terminal hair
● Made up of hard, keratinized cells and grow from a nail root under the cuticle
● Protect the distal ends of the fingers and toes and aid in picking up objects
● Other structures: free edge, nailbed, lunula
● Vascular supply is on the nailbed; gives the nail a pink color
● Fingernails: grow approximately 0.1mm daily
● Toenails grow more slowly
Nails
It has Eccrine glands and Apocrine glands
Sweat glands
This gland is….
- Widely distributed, open directly onto
the skin surface
- Help control body temperature
Eccrine glands
This gland is….
▪ found in the Axillary and genital regions
▪ surfaces into hair follicles
▪ Responsible for adult body odor due to
bacterial decomposition
Apocrine glands
Gland that produce fatty substance secreted onto the skin surface through the hair follicles and lubricates the hair shaft
Sebaceous gland
Interaction with other Body Systems:
- The Respiratory System
If respiration is impaired, alterations is the skin are most often evident through
the development of cyanosis
Bluish discoloration of the skin, as hemoglobin becomes unsaturated with oxygen
CYANOSIS
Respiratory System Fails Manifestations: Cyanosis
Peripheral and Central Cyanosis
Respiratory System Fails Manifestations: Cyanosis
Occurs when O2 saturation is <80% and results in diffuse changes in the skin and mucous membranes
Central Cyanosis
Respiratory System Fails Manifestations: Cyanosis
Occurs in response to decreased cardiac output Evident in areas of the body such as the nail beds and lips May also be evident when an individual is chilled
Peripheral Cyanosis
Manifestations when Respiratory System Fails:
Loss of the normal angle between the nail and nail bed owing to bulbous swelling of the soft tissue of the terminal phalanx of a digit due severe and chronic cardiopulmonary diseases
Nail Clubbing
Manifestations when Cardiovascular System Fails:
- Alterations can lead to circulatory impairment and changes in skin color and temperature which may develop Lesions, ulcerations, necrosis, and cyanosis
Manifestations when Gastrointestinal System Fails:
body’s ability to excrete toxins is impaired and accumulation of toxins may become
evident in the skin
Manifestations when Gastrointestinal System Fails:
- Yellowish discoloration of the skin due
to bile build-up secondary to impaired
bile secretion
Jaundice