Exam 1 - integumentary system

Question 1

integumentary system consists of

Answer 1

the skin, and many associated smaller, specialized organs (glands and hair follicles)

Question 2

what are the two layers in

Answer 2

epidermis and dermis

Question 3

epidermis:

Answer 3

made of epithelial tissue that is keratinized (tough protein) - has a rough superficial layer that provides protection

has a basal layer, or a deep layer

Question 4

does the epidermis have blood vessels

Answer 4

no it is avascular - but does contain a few nerve endings

Question 5

dermis

Answer 5

made of connective tissue made of interlacing elastic and collagen fibers that provide strength and tone

Question 6

does the dermis have blood vessels

Answer 6

yes, very vascular and well supplied with nerve endings

sensitive to pain, touch, and temp

Question 7

what is deep to the dermis

Answer 7

subcutaneous tissue (superficial fascia) consisting of loose connective tissue and stored fat —– used for padding and insulation

also contains sweat glands, sensory receptors. blood vessels

Question 8

hair fillicule

Answer 8

located in the dermis

produce hairs and regulates hair growth

Question 9

arrector (arrector pilli) muscles

Answer 9

contraction erects the hair and causes goose bumps

Question 10

sweat glands

Answer 10

in the dermis

produce watery secretion, the evaporation which helps with heat loss

Question 11

sebaceous gland

Answer 11

in the dermis

secrete an oily product into the skin and hair

Question 12

sensory receptors….. and example

Answer 12

Meissner corpuscles - sensory receptor high in the dermis (can detect a fly walking on the skin)

detecs light touch

Question 13

arterioles

Answer 13

dialation and constriction promotes heat loss or retention

Question 14

integementry system functions

Answer 14

protection
containment of body tissue, organs, and fluids
thermoregulation
sensation
systhesis and storage of vitamin D