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BIO 168 EXAM 2 CHAPTER 4 &5 QUESTIONS WITH COMPLETE ANSWERS

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BIO 168 EXAM 2 CHAPTER 4 &5 QUESTIONS WITH COMPLETE ANSWERS

Institution
Bio 168
Course
Bio 168

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Leukocyte


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Is a white blood cell




Free Cell Surfaces


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most epithelia have a free (apical) surface that is not in contact with other
cells

,Why does skin make melanin?


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melanin is thought to protect skin cells from UVB radiation damage.




stratified epithelium


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Adapted for protection




Compare the structure and locations of sweat and oil glands, as well as the
composition and functions of their secretions.


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occur in nearly all regions of the skin, but mostly numerous in the palms
and soles. sebaceous (oil) glands are all over the body except on the palms
of hands and soles of feet




What is hair?


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, filamentous strands of dead keratinized cells produced by hair follicles




serous membranes function


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Lines walls and organs of the abdominal cavity.
Very smooth & secrete a serous fluid that is a lubricating film between the
layers of membranes. Reduces friction as organs move within the abdomen,
if no fluid then we would have holes in our organs from them rubbing each
other raw




The perichondrium is dense irregular connective tissue that surrounds ?


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Cartilage




Stratified squamous epithelium has a protective function and is found in each of the
following locations expect:


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Stomach




Root Hair

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Medulla, cortex, cuticle, (Outer hair part) Internal root sheath, external root
sheath, dermal root sheath(Dermis)




What happens when the arrector pili contracts?


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It causes "goose bumps"




hair papilla


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Dermal tissue - blood supply




The gland that controls the fight-or-flight reaction


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adrenal medulla




There are many characteristics that distinguish epithelium from other tissues. Your
book names five... what are they?

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Institution
Bio 168
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Bio 168

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