Chapter 5 - Integumentary System Flashcards Preview

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Flashcards in Chapter 5 - Integumentary System Deck (74)
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61

thick (hairless) skin

covers what body regions?

palms, palmar surfaces of digits & soles

62

Integumentary System - functions? (6) 

1) regulate body temp

2) store blood

3) protection from external environment

4) detect cutaneous sensations

5) excrete/absorb substances

6) synthesize vitamin D

63

(5) Hair functions

1) protection from injury (scalp)

2) protection from sun's rays

3) sensing light touch

4) decreasing heat loss

5) protect eyes from foreign particles 

64

Main Organ of the Integumentary System

skin

65

(3) associated structures in the Integumentary system

1) nails

2) hair

3) glands

66

Most superficial region of the dermis

papillary region

67

Most common connective tissue fibre found in the dermis 

 

collagen

68

Which layer of the integument releases the heat from the body via the blood vessels?

dermis

69

What material makes the epidermis tough?

 

keratin

70

Distinguish between Pacinian corpuscles, Meissner’s corpuscles and pain receptors in the skin 

 

Pacinian - located deep in dermis & hypodermis

- function to recieve sensation of deep pressure

Meissner's located just underneath epidermis

- function to percieve light tough

Pain Receptors in the dermis 

- respond to numerous pain stimuli

71

Approximately how long does it take for the epidermis to renew itself?

4-6 weeks

72

Piloerector Muscle

What is it?

What does it do?

 

smooth muscle that extends from superficial dermis to dermal root sheath 

contracts which pulls hair shaft perpendicular to skin surface (upright) 

 

73

What is the outermost portion of the hair?

cuticle

74