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Basil's Spiny Granules Look Corny
mnemonic devices for skin
the deep layer of connective tissue underlying the epidermis
papillary and epidermis
functions are nourishment and temperature regulation
the dermis
superficial layer (20%) of the dermis
papillary layer
are finger like pegs which project into the epidermis and lie atop german ridges
dermal papillae
deeper 80% layer of the dermis
reticular layer
- cutaneous plexus : network of blood vessels at the border of the reticular layer and the
subcutaneous layer
- papillary plexus : highly-branched network of blood vessels just deep to the epidermis
- these plexi play a role in thermoregulation and overall blood flow
blood supply of the integument
are transferred to keratinocytes, where they protect nucleus from UV damage
melanosomes
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,a yellow to orange pigment found in certain plant products such as carrots can get trapped in
the epidermis
carotene
subcutaneous layer, fatty layer, or superficial fascia : layer deep to the skin NOT PART OF THE
INTEGUMENTARY SYSTEM but shares some of the skins functions
hypodermis
portion of the hair attached to the hair follicle
hair root
portion exposed to the surface
shaft
central core containing large cells and air spaces; absent in fine hairs
medulla
several layers of flattened cells
cortex
single outer of dead cells, which overlap like shingles; most heavily keratinized, for strength
cuticle
oil-secreting gland in the dermis that is associated with hair follicles— sebum
sebaceous gland
sudoriferous glands hands and feel
sweat glands
merocrine — sweat — help regulate body temp
eccrine glands
anal and genital
apocrine
milk producing glands
mammary glands
modified sweat glands, located in external ear canal, secretes cerumen (earwax)
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, ceruminous glands
matrix, body, bed, root, grooves, folds, eponychium, lunluna, hyponychium
nail structures
external ear, tip of nose, ends of most bones at the moveable joint, costal cartilage ( connects
rib cage to sternum), trachea, larynx, epiglottis, intervertebral disks, pubic symphysis
cartilages locations
mature cartilage cells which occupy cavities (or pits) called lacunae, are surrounded by an
extracellular matrix of ground substance, fibers and water
chondrocytes
Most common type of cartilage; it is found on the ends of long bones, ribs, and nose
hyaline cartilage
tolerate repeated bending (cartilage in external ear and in epiglottis)
elastic cartilage
thick collagen fibers predominate
fibrocartilage
cartilage forming cells
chondroblasts
support, protection, movement, mineral storage, blood cell formation
functions of bones
elongated shape; femur thigh bone, phalanges and metacarpals — hand bones
long bones
roughly cube-shaped; carpals - writs, patella
short bones
thin, flattened, and usually curved; most cranial bones of the skull; ribs, sternum, scapula
flat bones
various shapes and do not fit into previous categories
irregular bone
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