Anatomy Final - Integumentary System Flashcards

Terms Definitions
moles are____
elevated
Medulla
Core, loose cells
Hair differs_____
between sexes
lanugo
fine, unpigmented fetal hair
diaphoresis
sweating w/ visible wetness
pacinian corpuscle
receptor that detects pressure
Hair Matrix
Where cell division occurs
Stratum Corneum
Keratinocytes are DEAD, scaly
telogen
resting stage, lasts 1-3 months
reticular region
attached to subcutaneous layer, contains blood vessels and nerves, and glands.
desquarnation
the shedding of epithelial elements from the skin surface
Jaundice
YELLOW- High levels of bilirubin- Liver malfunction, hepatitis, arrhosis, cancer
Pallor
PALE- Little blood flow, collagen showing- Low BP, anemia, cold temp, stress
Cortex
Densly packed cells, ring around medulla
Cuticle
Single layer of scaly cells surrounding
Acne
- Inflammation of sebaceous glands- Follicles blocked with dead cells and creates bacteria buildup
hemangiomas
birthmarks, discolored skin caused by benign tumors of dermal blood capillaries
when onset of apocrine glands occur
puberty
pillus
slender filament of keratinized cells growing from unique tube in the skin
fingerprints
unique pattern formed during fetal development
the shaft
superficial portion of hair, which projects above surface of skin.
tyrosinase
an enzyme; albinism results from its absence
Tactile Cell
touch receptors, attach to sensory nerve endings
Dermatitis
Any inflammation of skin (itching and redness)
Nail Functions
- Dig, groom & pick food
Inner Integument Layer
Dermis- Connective tissue & muscle
bulb
swelling at the base where hair originates
where skin color comes from
melanin, hemoglobin, carotene
where merkel cells can be found
basal layer
thick skin
thick layer stratum corneum, thick layer of dead cells, sweat glands, no hair follicles, no sebaceous glands
result of oncogene BRAF in men
malignant melanoma
bromihidrosis
body odor produced by bacterial action on fatty acids
friction ridges
leave oily fingerprints on touched surfaces
cyanosis
blueness from deficiency of oxygen in the circulating blood(cold weather)
form in wrist and elbow areas
flexion lines
Papillary and Reticular layers make up what?
The Dermis.
second degree burn
severe pain, blisters form with swelling and edema
Hair & Nails
- Accessory organs- Dead, karitonized cells
Hair Functions
1) Warmth2) Sun Protection3) Alert for parasites4) Identification5) Sexual Maturity (pubic hair, beard)6) Stops particles from entering (eyelashes)7) Facial expression (eyebrows)
Melanin
- Black to red & some yellow- Determined by heredity- UV stimulates it
3rd degree burn
epidermis, dermis and more is destroyed
where the excretory ducts of the apocrine glands end
hair follicle
this forms the ridges of the fingerprints
dermal pappillae
ABCD of malignant melanoma
asymmetry, border irregular, color mixed, diameter over 6mm
macrophages that originate in the bone marrow but migrate to the epidermis and epithelia
Langerhans cells
characteristics of stratum corneum
resistant to abrasion, penetration, and water loss
what produces keratinocytes
stem cells in the stratum basale
flexion creases
form after birth by repeated closing of the hand
papillae of the hair
contains areolar connective tissue and many blood vessels that nourish the growing hair follicle.
location of secretory portion of eccrine glands
mostly in deep dermis
functions of Langerhans cells
stand guard against toxins, microbes, and other pathogens that penetrate into the skin
functions of apocrine glands
produce sweat containing fatty acid, respond to stress and sex
characteristics of apocrine secretions
more viscous, same components of eccrine sweat glands, plus lipids and proteins
The Epidermis contains 4 types of cells, what are they?
keratinocytes, melanocytes, langerhan cells, and merkel cells.
homeostasis of body temps
controlled by the hypothalamus in the brain
thermoregulatory
80% of heat loss is through the skin
to help dissipate even more heat, sweat rpoduction increases to as high as 3L per hour during excercise
functions of sudoriferous glands
filtration of plasma and some waste products
what stratum corneum is made up of
dead, scaly, keratinized cells
where the excretory ducts of the eccrine glands end
surface of the epidermis
integumentary effectors consist of muscles or glands within ? and does what?
the dermis, and responds to motor impulses transmitted from cns to skin.
new cells of nails are added by...
mitosis in the nail matrix
As new keratinocytes are produced, they...
push the older ones towards the surface. The older cells then become flat and fill w/ vesicles
Langerhan Cells, which arise from red bone marrow, migrate where? and do what?
to the epidermis, and participate in immune responses againts microbes that invade skin.
The superficial cells of the stratum spinosum....
produce more and more keratin, which causes the cells to flatten
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