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SC EXSC 223 - ch5

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SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.Figure 5.1Using Figure 5.1, match the following:1)Site of the dermal ridges that produce epidermal ridges on the epidermal surfaces of thefingers.1)2)Responsible for shock absorption and located in the hypodermis.2)3)Pulls the hair follicle into an upright position.3)4)Sudoriferous gland.4)5)Dense irregular connective tissue.5)6)Region that thickens markedly when one gains weight.6)7)Pain receptors are found here.7)1MATCHING. Choose the item in column 2 that best matches each item in column 1.Match the following:8)The most abundant cells of theepidermis.9)The protein found in the epidermisthat is responsible for toughening theskin.10)Cells plus a disc-like sensory nerveending that functions as a sensoryreceptor for touch.11) Skin macrophages that help activatethe immune system.12)Cell remnants of the stratum corneum.A)Epidermal dendritic cellsB)Merkel discC)KeratinocytesD)KeratinE)Cornified keratinocytes8)9)10)11)12)Match the following:13)The layer of the epidermis where thecells are considered protective butnonviable.14)The glands that serve an importantfunction in thermoregulation.15)The layer that contains the mitoticviable cells of the epidermis.16)Hair that lacks pigment and is oftencalled "immature hair."A)Sudoriferous glandsB)Stratum corneumC)VellusD)Stratum basale13)14)15)16)Match the following:17)May indicate embarrassment, fever,hypertension, inflammation, orallergy.18)May indicate fear, anger, anemia, orlow blood pressure.19)Usually indicates a liver disorder.20)Appearance of a permanent tan;bronzing.21)A bluish color in light-skinnedindividuals.A)ErythemiaB)Addison’s diseaseC)JaundiceD)PallorE)Cyanosis17)18)19)20)21)2TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false.22)The apocrine sweat glands are fairly unimportant in thermoregulation.22)23)Skin surface markings that reflect points of tight dermal attachment to underlying tissues are calledepidermal ridges.23)24)The dense fibrous connective tissue portion of the skin is located in the reticular region of thedermis.24)25)The outermost sheath of a hair follicle is the connective tissue root sheath.25)26)The protein found in large amounts in the outermost layer of epidermal cells is collagen.26)27)Joe just burned himself on a hot pot. A blister forms and the burn is painful. Joe's burn would bestbe described as a third-degree burn.27)28)Destruction of the matrix of the hair bulb would result in its inability to produce oil.28)29)The hyponychium is commonly called the cuticle.29)30)The reason that the nail bed appears pink is the presence of a large number of melanocytes in theunderlying dermis.30)31)During the resting phase of hair growth, the matrix is inactive and the follicle atrophies.31)32)The most dangerous skin cancer is cancer of the melanocytes.32)33)The skin is not able to receive stimuli because the cells of the epidermis are not living and thereforethere are no sensory receptors in the skin.33)34)The dermis is rich in blood vessels and nerve fibers.34)35)The hypodermis is composed of adipose and dense connective tissue.35)36)A physician is often able to detect homeostatic imbalances in the body by observing changes in theskin color.36)37)When an individual is exposed to extremely low air temperatures, the dermal blood vessels willdilate so that blood and heat will be dissipated.37)38)Regardless of race, all human beings have about the same number of melanocytes.38)39)Ceruminous glands are modified merocrine glands.39)40)The stratum corneum (outermost layer of skin) is a zone of approximately four layers of viable cellsthat are able to synthesize proteins that keep the outer layer of skin smooth and soft.40)341)The pinkish hue of individuals with fair skin is the result of the crimson color of oxygenatedhemoglobin (contained in red blood cells) circulating in the dermal capillaries and reflectingthrough the epidermis.41)42)Hair growth and density are influenced by hormones, nutrition, and, in some cases, lifestyle.42)43)When a patient is said to have "third-degree burns," this indicates that the patient has burns thatcover approximately one-third of the body.43)44)Sweat glands continuously produce small amounts of sweat, even in cooler temperatures.44)MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.45)Select the most correct statement concerning skin cancer.A)Melanomas are rare but must be removed quickly to prevent them from metastasizing.B)Squamous cell carcinomas arise from the stratum corneum.C)Most tumors that arise on the skin are malignant.D)Basal cell carcinomas are the least common but most malignant.45)46)________ is an inherited condition that affects the heme pathway; it leaves the skin scarred andgums degenerated, and may have led to the folklore about vampires.A)RosaceaB)ImpetigoC)PorphyriaD)Decubitus ulcer46)47)A needle would pierce the epidermal layers of the forearm in which order?A)granulosum, basale, spinosum, corneumB)basale, spinosum, granulosum, lucidum, corneumC)basale, spinosum, granulosum, corneumD)corneum, granulosum, spinosum, basale47)48)The major regions of a hair shaft include all of the following except ________.A)cuticleB)cortexC)medullaD)external root sheath48)49)Acne is a disorder associated with ________.A)sebaceous glandsB)sweat glandsC)Meibomian glandsD)ceruminous glands49)50)The dermis ________.A)has two layersB)lacks sensory corpuscles and glandsC)is an avascular connective tissue layerD)is where melanocytes are found50)51)Which muscles attached to the hair follicles cause goose bumps?A)levator folliculiB)arrector piliC)arrector folliculiD)arrector integument51)52)If a splinter penetrated the skin into the second epidermal layer of the sole of the foot, which cellswould be damaged?A)granulosumB)lucidumC)spinosumD)basale52)453)Which of the following cutaneous receptors is specialized for the reception of touch or lightpressure?A)Krause's end bulbsB)Pacinian corpusclesC)free nerve endingsD)Meissner's corpuscles53)54)Which of the following is a skin sensory receptor for touch?A)Pacinian corpuscleB)free nerve endingC)Ruffini bodyD)Meissner’s corpuscle54)55)Which statement correctly explains why hair appears the way it does?A)Air bubbles in the hair shaft cause straight hair.B)Perfectly round hair shafts result in wavy hair.C)Kinky hair has flat, ribbonlike hair shafts.D)Gray hair is


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SC EXSC 223 - ch5

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