Ch. 5 Integumentary Review

What are the inaccuracies in the composition and general function of each section of the skin?

• The dermis contains connective tissue and serves to support the skin, such as hair, nerves, and blood vessels.

• The hypodermis contains adipose and serves to provide insulation.

• The epidermis contains stratified squamous epithelium and serves for protection.

• All of these statements are correct

Tags

NGSS.MS-LS1-3

What is an incorrect statement concerning the cells and functions of the skin?

• Merkel - deals with fine touch

• Keratinocytes - make keratin to toughen the skin to create a barrier.

• Pacinian - deals with sensing pressure

• Ruffini - deals with general touch sensation.

What layer(s) are still alive/dividing within the skin?

• Stratum corneum and stratum lucidum
• Papillary layer and reticular layer
• Epidermis and dermis
• stratum basale and stratum spinosum.

What’s the incorrect difference between thick and thin skin?

• Thick skin has both sweat glands and sebaceous glands.

• Thin skin contains hair follicles.

• Thick skin contains the stratum lucidium layer.

• Thick skin contains more layers of stratum corneum.

What is the function(s) of the dermal papillae and epidermal ridges?

• The functions of dermal papillae include enhancing nutrient exchange and anchoring the dermis to the epidermis, while epidermal ridges increase grip and tactile sensitivity.
• Dermal papillae and epidermal ridges are involved in regulating body temperature.
• Epidermal ridges are responsible for producing sweat and oil.
• Dermal papillae primarily serve as a barrier against pathogens.

What structure helps to make your hair stand straight when you’re cold?

• Dermal papillae
• Sebaceous glands
• Hair follicles
• Arrector pili muscles

Where specifically does your hair grow?

• Hair grows from the hair follicle.

• Hair grows from the root.

• Hair grows from the bulb.

• Hair grows from the matrix.

What is the incorrect function of each of the glands of the integumentary system?

• Sebaceous glands produce sebum to hydrate and protect the skin/hair.

• Apocrine sudoriferous glands produce mucus.

• Ceruminous glands produce wax for protection.

• Eccrine sudoriferous glands produce sweat for thermoregulation.

What is the function of nails?

• Nails are used for climbing trees.
• Nails help in breathing.
• Nails are primarily for decoration.
• The function of nails is to protect the digits and assist in manipulation.

What is the correct process of healing our dermal wounds?

• Inflammatory is to make the wound worse.

• Migratory phase produces a scab.

• Proliferative phase performs meiosis of the skin cells.

• Maturation will still contain a scab, but the wound is essentially healed.