Lab 2 Questions

Question 1

where do you typically find epithelial tissue in the body?

Answer 1

-lining the outside and inside surfaces of the body
-in secretion areas and glands

Question 2

what are some characteristics of epithelial tissue?

Answer 2

-has one free surface
-little extracellular space
-avascular
-has a basement membrane (attaches to CT)

Question 3

In what area of the body could you find simple cuboidal tissue?

Answer 3

-kidneys

Question 4

in what parts of the body can you find simple columnar tissue?

Answer 4

-stomach
-intestines

Question 5

in what parts of the body can you find stratified squamous tissue?

Answer 5

-epidermis
-mucous membranes (cavities that open to the outside of the body)

Question 6

what are the two main categories of glands in the body?

Answer 6

-endocrine glands
-glands that secrete hormones directly into blood
(NO DUCTS)
-exocrine glands
-glands that secrete products through a duct onto
the surface or into a cavity

Question 7

what structures are made of glandular epithelium?

Answer 7

-sweat (sudoriferous) glands
-sebaceous (oil) glands
-goblet cells

Question 8

what are the two parts of the extracellular matrix?

Answer 8

-fibres (protein)
-ground substance

Question 9

what are the two main types of fibres in the matrix?

Answer 9

-collagen
-elastin

Question 10

what is the composition of ground substance?

Answer 10

-water
-large organic molecules (HA, chondroitin)

Question 11

what substance is stored in the large space of loose adipose tissue?

Answer 11

-triglycerides (lipids)

Question 12

is loose adipose tissue vascular or avascular?

Answer 12

-highly vascular
-has many blood vessels to transfer lipids to different parts of the body)

Question 13

what is the major tissue type and subtype of sebaceous glands?

Answer 13

-major:epithelial
-sub: glandular

Question 14

what is the major tissue type and subtype of sudoriferous (sweat) glands?

Answer 14

-major:epithelial
-sub:glandular

Question 15

what is the major tissue type of a arrector pilli muscle?

Answer 15

-muscle

Question 16

what is the major tissue type of a meissners (tactile) corpuscle?

Answer 16

-nervous

Question 17

what is the major tissue type of a hair follice?

Answer 17

-epithelial

Question 18

what is the major tissue type of a hair root bulb?

Answer 18

-epithelial (dead keratintocytes)

Question 19

what is the major tissue type of a pacinian (lamellar) corpuscle

Answer 19

-nervous

Question 20

what are common features of thin skin?

Answer 20

-hair root and follicle
-sebaceous glands
-arrector pili muscles
-thinner epidermis layer (lacking lucidum layer)

Question 21

what is the major tissue type and subtype of the reticular layer of the dermis?

Answer 21

-major:connective
-sub: dense irregular

Question 22

what are common features of thick skin?

Answer 22

-lacks hair structures (follicle, oil gland, arrector pili)
-has a thicker epidermis with a stratum lucidum

Question 23

what is the major tissue type and subtype of the hypodermis?

Answer 23

-major: connective
-sub:loose adipose

Question 24

what is the major tissue type and subtype of the papillary layer of the dermis?

Answer 24

-major:connective
-sub:areolar

Question 25

what is the function of the arrector pili muscle?

Answer 25

-contracts to make hair stand up
-goosebumps and in mammals is used to trap warm air against the skins surface if the organism is cold

Question 26

what is the function of meissners (tactile) corpuscles?

Answer 26

-senses light touch on the skin
-close to the surface
-lower pressure to activate

Question 27

what is the function of pacinian (lamellar)

Answer 27

-senses deep pressure
-in the dermis or even hypodermis
-higher pressure to activate