Movement change in position or motion of internal parts
Accessory Organ Worksheet
Revised 9/08
ACCESSORY ORGANS
For each true statement write T. For each falser statement, correct the underlined word(s) and insert your correction in the answer blank.
___________________1. Greater amounts of pigment carotene are produced when the
skin is exposed to the sun.
___________________2. The most abundant protein in dead epidermal structures such as hair and nails is melanin.
___________________3. Sebum is an oily mixture of lipids, cholesterol, and cell fragments.
___________________4. The oldest epidermal cells in the epidermis are found in the stratum basale.
___________________5. The externally observable part of a hair is called the root.
___________________6. The epidermis provides the mechanical strength to the skin.
Using key choices, complete the following statements. Insert the appropriate letter(s) or term(s) in the answer blank.
Key Choices
A. Arrector pili C. Hair E. Sebaceous glands G. Sweat glands
B. Cutaneous receptors D. Hair follicle(s) F. Sweat gland (apocrine) (eccrine)
___________________7. A blackhead is an accumulation of oily material produced by ___(7)___.
___________________8. Tiny muscles attached to hair follicles that pull the hair upright during fright or cold are called ___(8)___.
___________________9. The most numerous variety of perspiration gland is the ____(9)____.
___________________10. A sheath formed of both epithelial and connective tissue is the
___(10)___.
___________________11. A less numerous variety of perspiration gland is the ___(11)___. Its secretion (often milky in appearance) contains proteins and other substances that favor bacterial growth.
___________________12. ___(12)___ is found everywhere on the body except the palms of the hands, soles of the feet, and lips, and primarily consists of dead keratinized cells.
___________________13. ___(13)___ are specialized nerve endings that respond to temperature and touch for example.
___________________14. ___(14)___ become more active during puberty.
___________________15. Part of the heat-liberating apparatus of the body is the ___(15)___.
___________________16. Acne is an infection of a(n) __(16)__.
___________________17. __(17)__ houses the hair.
___________________18. __(18)__ are primarily dead/keratinized cells.
___________________19. __(19)__ “sports” a lunula and a cuticle.
Figure below is a diagram of a cross-sectional view of a hair in its follicle. Complete this figure by following the directions in steps 1-3.
1. Identify the two portions of the follicle wall by placing the correct name of the sheath at the end of the appropriate leaser line.
2. Use different colors to color these regions.
3. Label, color code, and color the three following regions of the hair.
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