5 From where do the cells of the epidermis obtain oxygen and nutrients? a. From

Question

5 From where do the cells of the epidermis obtain oxygen and nutrients? a. From blood vessels in the epidermis b Diffusion from blood vessels in the dermis. C Diffusion from the air d. From blood vessels in other epithelal tissues 6 Matching: Match the following terms with the correct dexription. Papillary layer Sebaceous gland Lamellated corpuscle Hair follicle Dermal papillae Hair shaft Reticular layer Sweat glancd A. Secrete product through a pore B. Pressure receptor in the dermis C· Projections of the derms that indent the epidermis D. Superficial layer of the dermis, loose connective tissue E. Sheath of epithelial and connective tissue around a hair F Deep layer of the dermis, dense irregular collagenous connective tissue G. Secretes sebum (o H. Portion of the hair that projects from the skin's surface 7 Which of the following are characteristics of thin skin? (Circle all hat apply) Located over the palms and the soles of the feet. b. Contains hair and arrector pili muscles c Contains sweat glands d. Very thick stratum corneum. e. Contains sebaceous glands f. Contains a stratum lucidum. 8 TrueiFalse Mark the following questions as true () or false (, If the question s faise, correctit to make it a true statement a. An arrector pili muscle is composed of skeletal muscle tissue. b. The dividing cells of a nail are located in the eponychium. c. Both hairs and nails are composed primarily of dead keratinocytes d. A hair follicle š composed of epithelium and connective tissue. 9 Fill in the blanks corpuscles in the dermis detect pressure, whereas corpuscles in the dermis detect fine touch. 10 Eccrine sweat is released into a , and sebum is released into a a. a duct; a hair follicle b a hair follicle; a blood vessel. c. a duct, a blood vessel. d a hair follicle, a duct 150 Exaloring Anatomy & Physiology in the Laboratory a

Explanation / Answer

Answer 5] epidermis obtain their nutrients and oxygen from

b]Diffusion from blood vessels in the dermis

explaination=epidermis does not have a direct blood supply ,all nutrients that feeds this cell come from the dermis by diffusion

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6]match the following

Description

papillary layer = D] Superfacial layer of the dermis : loose connective tissue. composed of loose connective tissue.

Sebaceous gland= G]Secrets sebum A small gland in skin which secretes lubricating oily matter sebum

Lamellated corpuscles =B]Pressure receptor in dermis these are small oval bodies that are sensitive to pressure are found in the skin of the fingers & elsewhere

Hair follicles=E] Sheath of epithelial and connective tissue around a hair

Dermal papillae=C]projection of the dermis that indent the epidermis.

Hair shaft=H]Portion of the hair that projects from the skins surface.

Reticular layer= F]deep layer of dermis ,dense regular collagenous connective tissue.

Sweat gland= A] secrete product through pore

sweat glands are secretory glands in mammals. secrete their secretions outside body through pores.

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