Anatomy 9/19/06
Terms
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- Epidermis (tanning)
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-increases amt of melanin by melanocytes
-to protect skin from uv rays
-avid tanners get wrinkles
-UV rays destroy elasticity in the elastic fibers (stretches out, but can't recoil) - Dermis (dermal papillae)
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-increases surface area b/t dermis and epidermis
-houses blood vessels to nourish living cells of the epidermis - Dermis (reticular)
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-modified dense irrecgular connective tissue
-has elastic fibers for recoil
-collagenous fibers set limit to how much skin can be pulled or stretched - Dermis (What makes tattoos permanent?)
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-Collagenous fibers in reticular layer
-tattoos contain heavy metals - Glands (general)
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-sweat glands (merocrine and Apocrine)
-oil glands
-ceruminous glands (ear wax)
-mammery - Merocrine gland
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-exocrine gland
-born with
-tubular ball in dermis
-rich blood supply (carries nutrients and heat to gland)
-duct leads to surface
-works all the time - Merocrine gland (located?)
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-all over the body
-higher concentrations in the forehead, back, chest, palms, and soles of feet - Merocrine gland (purpose)
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-excretes metabolic waste
-produces watery material that heat diffuses to
-forces it out of the duct through skin, evaporates on skin. - Apocrine gland
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-ball of tubes
-duct exits into hair follicle
-only functional at puberty - Apocrine gland (purpose)
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-produces gentically specific odors (odiforus molecule)
-supoosedly attracts mate - Apocrine gland (where found)
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-only found in axilary and engunal areas
-armpit, pubic, anus, and nipples - Birth control pills
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-tricks body that it is pregnant
-changes chem. of the scented molecules
-raised divorce rates - Body temperature (radiation)
- -diffusing into environment
- Body temperature
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-optimal temp. for chem reactions= 98.6
-blood comes into skin from internal organs
-organs warm blood which in turn warms skin - Body temperature (convention)
- -dissipation of heat
- Body temperature (Goosebumps)
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-by contracting arrector pilli muscles, heat is made (pulls epidermis down)
-sureface area is reduced
-air trapped in pockets and warmed
-conserves heat - Body temperature (shaking)
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-when goosebumps are not making enough heat
-contracting of skeletal muscles - Skeletal system (purpose)
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-structural framework (ameoba w/o it)
-protection (major organs)
-movement (joints, hinges, gives muscles somethign to move)
-hemopolesis (production of blood cells)
-storage (nutriants, calcium) - Skeletal system (Anal skeleton)
- -head, vertebrae, ribcage (thoracic cage)
- Skeletal system (appendicular skeleton)
- -pectoral girdle, upper appengenes, pelvic girdle, and lower appendeges
- Skeletal system (head)
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-cranium
-facial (gives you face)
-auditory oxile (ear bones-amplifies sound)
-Hyoid (does not articulatr w/ any other bones, supports toungue and larnyx) - Skeletal system (cranium)
- -protects brain
- Cranium (frontal)
- forehead
- Cranium (parietal)
- upperside
- Cranium (occipital)
- back
- Cranium (temporal)
- surrounds ears
- Cranium (sphenoid)
- goes behind eyes
- Cranium (Ethmoid)
- between eyes
- Cranium (sutural)
- grew b/t major bones in some ppl
- Facial (nasal)
- solid part of nose
- Facial (lacrimal)
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-medial to each eye
-collects lacrimal fluid - Facial (zygomatic)
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-cheek bones
-inferior to eyes - Facial (maxilla)
- -support teeth in upper jaw
- Facial (vomer)
- -partition b/t nostrils
- Facial (mandible)
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-lower jaw
-supports lower teeth - Facial (palatine)
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-roof of mouth
-most posterior of facial bones