Module 5 Quiz Questions Flashcards
Where are the apocrine sweat glands located?
Found in the axilla, the pubic region a d the areolae of the breast
Where are Meissner’s corpuscles located and what is their function?
Found in dermal papillae and they function as touch receptors.
Where do most sebaceous glands release their secretions?
Most sebaceous glands release secretions into the hair follicles.
What structures constitute the integumentary system?
Skin, hair, nails, glands, receptors
What is albinism?
A condition characterized by a lack of melanin synthesis. Albinos are unable to synthesize the enzyme tyrosinase.
Describe the structure of the hypodermis.
The hypodermis (subQ) is a layer of areolar CT and adipose tissue that anchors the dermis to the underlying tissues.
What is the status corneum and what is its function?
The outermost layer of the epidermis consisting of 25-30 rows of flat, dead, keratinized cells; its primary function is protection.
What are dermal papillae?
Increase the surface area of the skin. They also allow for the sensation of light tough, coolness, warmth, tickling, and itching.
Determine the 3 main factors that determine the colour of the skin:
Melanin, carotene, superficial blood vessels
What is the function of cerumen?
Prevents the entry of foreign materials deep into the ear
What is a melanocyte, and in which layer of the skin is it found?
Melanocytes are pigment-synthesizing cells of the epidermis
List the 3 primary layers of the skin.
Epidermis, dermis, hypodermis (subcutaneous)
What is the stratum basale and what is its function?
The innermost layer of the epidermis and it’s function is to provide cells for the epidermis.
Identify 3 main epidermal accessory structures:
Hair, nails, glands
Which parts of the body lack sebaceous glands?
Palms, finger tips and the soles.
What is the function of the arrector pili muscles?
Pull the hairs into vertical position. The contraction of the muscles occurs under the stresses of fright, cold, or emotion.
Identify the functions of the skin.
Maintain body temperature, protection, sensory perception, excretion, synthesis of vitamin D, immunity, blood reservoir.
In the skin, the nerves and blood vessels are found mainly in the __
Dermis
Vitamin D production by the skin depends on what?
Exposure to ultraviolet radiation
___ does not contain any blood vessels.
Epidermis
True or false: eccrine sweat glands are more numerous than other types of sweat glands.
True
Which of the layers of the epidermis occurs only in thick skin?
Stratum lucidum
In caucasians, the skin appears pink to red, with the red colouring coming from __.
Hemoglobin
