5 From where do the cells of the epidermis obtain oxygen and nutrients b DfMuson

Question

5 From where do the cells of the epidermis obtain oxygen and nutrients b DfMuson from blood vessels in the demis C Diffusion from the ar d From blood vessels in other epithelial 6 Matching: Match the following terms with the correct description A Secrete product sheough a pore Papillary layer Sebaceous gland Lamellated corpuscle Hair follicle Dermal papillae Hair shaft Reticular layer Pressure receptor in the erms C. Projections of the dermis that indent the i D. Superficial layer of the denis, oose coeective ue E. Sheath of epitheial and connective te around a h F Deep layer of the dermis, dense ineglar coeo connective s G Secretes sebum (ol) H Portion of the hair that peojects from the skins surtace Sweat gland 7 Which of the following are characteristics of thin skin? (Circle all that apply) a Located over the palms and the soles of the feet b Contains hair and arrector p?? muscles c Contains sweat glands d Very thick stratum corneum e. Contains sebaceous glands 1 Contains a stratum lucidum 8 True/False: Mark the following questions as true (m or false (F). If the question is false, correct it to make it a tru statement a· An arrector pli muscle is composed of skeletal muscle tssue. b. The dividing cells of a nail are located in the eponychium c Both hairs and nais are composed primarily of dead keratinocytes A hair foilicle is composed of epithelium and connective tissue is composed of epithelium and connective tissue d. 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 Exploring Anatomy & Physiology in the Laboratory

Explanation / Answer

Answer 5. Option b

Epidermis obtain everything from its deeper layer and that is dermis. Dermis has enough blood supply thus through diffusion it supplies epidermis.

Answer 6.

Papillary layer D

Sebaceous gland G

Lameliated corpuscles B

Hair follicle E

Dermal papillae C

Hair shafts H

Reticular layer F

Swear gland A

Answer 7. Option b, C, D, e

Stratum lucidum is absent in them and in palms and foot thick skin is present that faces lot of abrasion.

Answer 8.

A. False. It is composed of smooth muscle fibers.

B. False. Nail matrix helps in forming dividing cells. Eponychium protects the area between nail and epidermis from bacterial exposure.

C. True.

D. True.

Answer 9. Pacinian corpuscles detect pressure and

Meissner's corpuscles detect touch.

Answer 10. Option a

Eccrine sweat is passed through a duct onto skin surface and sebum oils the hair.

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