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A needle would pierce the epidermal layers of the forearm in which order?
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Keratin is an important skin pigment that protects against ultraviolet light.
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Anatomy Ch4 Pretest
| Question | Answer |
|---|---|
| A needle would pierce the epidermal layers of the forearm in which order? | Stratum corneum, stratum granulosum, stratum spinosum, stratum basale |
| Keratin is an important skin pigment that protects against ultraviolet light. | false |
| The cell layers of skin from the most superficial to the deepest appear in what order? | stratum corneum, lucidum, granulosum, spinosum, and basale |
| After several months of extensive weight training, Nick has noticed pinkish, depressed furrows with jagged edges in his axillary region. These markkns are a result: | healing due to tine tears in the dermis |
| Prolonged exposure to the sun causes melanocytes to: | increase melanin production |
| The hair follicle is found in the: | dermis |
| Which of the following is not true of the dermis? | in general, the dermis is thinner on the dorsal side of the body than on the ventral side |
| A geneticist informs the parents that their newborn infant does not have the enzyme tyrosinase. The lack of this enzyme will result in: | albinism |
| The surface film found on the skin has variety of functions, including: | lubrication, buffering of caustic irritants, and antibacterial and antifungal activity |
| Fingernail growth is the result of the mitosis of cells in the stratum: | germinativum |
| Which cells of the skin are filled with a rough, fibrous protein called keratin and accounts for most of the epidermal cells of the skin? | keratinocytes |
| In which skin layer does the process of keratinization begin? | stratum granulosum |
| beneath the skin | subcutaneous |
| a form of skin cancer that appears in many cases of acquired immunodeficiency syndrome | Kaposi sarcoma |
| the most prevalent sweat gland | eccrine |
| frequently referred to as a bed sore | decubitus ulcer |
| deficiency or complete lack of skin pigment | albinism |
| crescent-shaped white area at the base of the nale | lunula |
| The time required for the completion of mitosis, differentiation, and the movement of new cells from the stratum basale to the surface of the skin is about: | 35 days |
| Matt is admitted to the hospital with burns to the deep epidermal layers and injury to the upper layers of the dermis. The physician treats Matt's condition as a: | second-degree burm |
| The 2 main layers of the skin are: | epidermis and dermis |
| The degree of environmental temperature seems hotter in humid climates than it does in dry ones because: | evaporation is retarded in humid climates |
| "Burns" can be caused by: | corrosive chemicals, unltraviolet light, electrical current |
| The body compensates for the increase in the core body temperature caused by exercise by: | increasing blood flow to the skin called vasodillation |
| Hair can become brittle and dry due to the: | improper function of the sebaceous glands |
| What increase in body temperature would be caused by pyrogens? | fever |
| Apocrine sweat glands can be found in all of the following areas except the: | soles of feet |
| The fibers in which layer make it possible for skin to stretch and be elastic? | reticular layer |
| The presence of hemosiderin and bile pigments in the skin can cause the skin to appear cyanotic. | false |
| Hair: | is formed from cells of the germinal matrix, consists of keratinized cells, alternates between periods of growth and rest |
| The body's temperature control center is located in the: | hypothalamus |
| The average turnover time for skin cells to go from the stratum basale to the surface of the epidermis is about 35 days. | true |
| The hypodermis: | connects the dermis to the underlying tissues |
| When the skin looks cyanotic, it is because: | oxygen-poor blood can be seen through the skin |
| After several hours of landscaping the yard, Jennifer experienced a body temperature of 105 F, a rapid heart rate, headache, and hot, dry skin. She is taken to a medical facility and treated for what condition? | heat stroke |
| Onycholysis is usually caused by: | trauma to long fingernails |
| Which skin layer is called the barrier area? | stratum corneum |
| The type of cancer associated with changes in a mole is: | malignant melanoma |
| Although you get wet swimming, a tough protein within the skin prevents it from soaking up moisture like a sponge. The substance is called ___. | keratin |
| The layer beneath the dermis is called the: | subcutaneous layer, superficial fascia, and hypodermis |
| The term used to describe the skin and its appendages is the: | integumentary system |
| Melanocytes account for approximately 55% of the epidermal cells. | False |
| Sebum: | lubricates hair and skin |
| The superficial layer of skin the hair, and the nails are: | made of keratin |
| Which statement best explains the importance of the dendritic cells? | They find markers on bacteria and other invaders and present them to other immune system cells for recognition and destruction. |
| Which skin layer has cells that look prickly because of the desmosomes that join the cells together? | stratum spinosum |
| A high level of melanin in the ksin assists in the formation of vitamin D. | False |
| Smooth muscles that produce goose pimples when they contract are the: | arrector pili muscles |
| The conversion of water from a liquid state into a gaseous state happens with which form of body heat loss? | evaporation |
| A second-degree burn is characterized by: | severe pain, generalized swelling, and edema |
| another name for the first or second degree burn | partial-thickness burn |
| destroys both epidermis and all of dermis; may include underlying tissue; also called a third degree burn | full-thickness burn |
| damage to epidermis and dermis, with blisters | second-degree burn |
| involves only the epidermis | first-degree burn |
| The most common type of skin cancer is: | basal and squamous cell carcinoma |
| The darkest of the skin pigments is: | eumelanin |
| If you were looking under the microscope at a slide that contains skin glands, what three kinds of microscopic glands would be present? | sweat, sebaceous, and ceruminous glands |
| In what area of the body would you expect to find an especially thick stratum corneum? | sole of the foot |
| The waxy secretion is the external ear canal is | ceruminous |
| the papillary layer of the dermis: | does not contain blood vessels |
Created by:
amh159