FREE AND STUDY GAMES ABOUT ANATOMY CH. 6 EXAM

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FREE AND STUDY GAMES ABOUT ANATOMY CH. 6 EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -34 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: The __ is a region of thickened s.c. over which the free nail edge projects.

Answer:

hyponychium Question 2: Scalelike modifications of s.c. layer of epidermis that form on dorsal edges of fingers and toes. Protect distal tips of digits and prevent damage or extensive distortion during jumping, kicking, or catching. Assist in grasping objects.

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nails Question 3: Not found in all hair types- a remnant of soft core of matrix. Composed of loosely arranged cells and air spaces and contains flexible, soft keratin.

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medulla Question 4: The epithelium at base of bulb surrounds a small __ __, which is composed of a small amount of c.t. containing tiny blood vessels and nerves.

Answer:

hair papilla

Question 5: An oblique tube that surrounds the hair root. It extends into dermis and sometimes into subcutaneous layer. Cells of follicle walls are organized into two principle concentric

layers: connective tissue root sheath and epithelial tissue root sheath.

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hair follicle Question 6: The diameters of the vessels narrow, so relatively less blood can travel through them. __ of dermal blood vessels occurs if the body is trying to conserve heat.

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vasoconstriction Question 7: Deep to epidermis. Composed of connective tissue proper, and contains primarily collagen fibers, although both elastic and reticular fibers are also found w/in it. Two regions: superficial papillary layer and deep reticular layer.

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dermis Question 8: Superficial region of dermis found directly adjacent and internal to epidermis.Composed of areolar c.t. and derives name from projections of dermis called dermal papillae.

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papillary layer Question 9: A single hair. Has shape of a slender filament. Composed of keratinized cells growing from hair follicles that extend deep into dermis, often projecting into underlying subcutaneous layer.

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pilus Question 10: The __ is the portion of the hair deep to the skin surface. Consists of dead epithelial cells.

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root Question 11: Several layers of flattened cells closer to outer surface of developing hair form relatively hard __. A single cell layer around the cortex forms the ___, which coats the hair.

Answer:

cortex, cuticle

Question 12: __ of dermal blood vessels means that the diameter of the vessels increases, so relatively more blood can travel through them. Dermal blood vessels do this so more blood will travel close to body surface and excess heat may be lost if body is too warm.

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vasodilation Question 13: __ is found almost everywhere on body except palms of hands and palmar surface of fingers, sides and soles of feet and toes, lips, and portions of external genitalia.

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hair Question 14: Extending from hair follicle to dermal papillae are thin ribbons of smooth muscle that collectively are called the __ __. Stimulation of this is usually a result of an emotional state or a response to exposure to cold temps. "Goose bumps"

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arrector pili Question 15: Each nail has a distal whitish __ __, a pinkish __ __, and a __ __, which is proximal part embedded in skin. Together, these form the __ __.

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free edge, nail body, nail root, nail plate Question 16: When skin is stretched beyond its capacity, some collagen fibers are torn and result in stretch marks __. Flexibility and thickness of dermis are diminished by effects of exposure to ultraviolet light and aging, causing either sagging or wrinkled skin.

Answer:

striae

Question 17: A structure at base of hair bulb.

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hair matrix Question 18: Consists of epithelial cells and is a swelling at base where hair originates in dermis. Contains living epithelial cells.

Answer:

hair bulb

Question 19: The __ is the whitish semilunar area of the proximal end of the nail body. Has a whitish appearance b/c a thickened s.b. obscures the underlying blood vessels.

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lunula Question 20: __ __ is usually coarser, pigmented, and longer than vellus. Grows on scalp, and is hair of eyebrows and eyelashes. At puberty, this replaces vellus hair in axillary and pubic regions, and forms beard on faces of males.

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terminal hair Question 21: A fine, unpigmented, downy hair that first appears on fetus in last trimester of development.

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lanugo Question 22: Distribution of nerve fibers. Allows us to be very aware of our surroundings and to differentiate among different kinds of sensory signals from receptors in skin.

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innervation Question 23: The __ aka the __, is a narrow band of epidermis extending from the margin of the nail wall onto nail body.

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eponychium, cuticle Question 24: Tension lines. Identify predominant orientation of collagen fiber bundles.

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lines of cleavage Question 25: At the nail root and proximal end of nail body, nail bed thickens to form __ __, which is the actively growing part of the nail.

Answer:

nail matrix