connective and epithelial tissue

Question 1

what are the two types of epithelia tissue?

Answer 1

. covering epithelia

.glandular epithelia

Question 2

what are covering epithelia classified based on?

Answer 2

.covering epithelia can be classified based on shape of cell- squamous, cuboidal,columnar
.covering epithelia can be classified based on number of layers
1 layer= simple
>1 layer=stratified

Question 3

what are the two types of glandular epithelia?

Answer 3

. endocrine - secrete substances into vascular system

.exocrine- use ducts

Question 4

what are the two types of exocrine glands?

Answer 4

. unicellular

.multicellular which can have one duct ( single) or many ducts ( compound)

Question 5

what do connective tissue consist of?

Answer 5

. ground substance
. different types pf fibres
. small number of various types of cell

Question 6

what are the two structures of connective tissue?

Answer 6

. loosely arranged which can be areolar or adipose

.densely arranged which can be regular or irregular

Question 7

what type of tissue is the guinea pig mesentery?

Answer 7

loose areolar connective tissue

Question 8

what is the function of the mesentary?

Answer 8

binds together the loops of intestine within the peritoneal cavity

Question 9

which cells do the smaller , darker , elongate nuclei belong to?

Answer 9

.fibroblast

Question 10

what is the function of fibroblast?

Answer 10

. synthesise collagen and ground substance

Question 11

what is the nature of these fibres?

Answer 11

collagen

Question 12

where in the eyes do you find areolar connective tissue?

Answer 12

stroma of iris it allows iris to change pupil shape easily

Question 13

what tissues/cells make up the inner surface of monkey gut?

Answer 13

the inner surface is mixture of simple columnar epithelial cells and goblet cells

Question 14

what is the white space in the monkey gut?

Answer 14

lumen of gut

Question 15

what do goblet cells secrete?

Answer 15

mucous which lubricates and protects

Question 16

which ocular tissues contain goblet cells?

Answer 16

conjunctiva

conjunctival goblet cells form mucous layer of the tear film

Question 17

why does simple columnar epithelium appear to have several layers of nuclei?

Answer 17

cells have different shapes = pseudo stratified

Question 18

how are the layers of skin arranged?

Answer 18

1. stratum cornea-outer layer of skin consisting of keratin- keep skin hydrated
2. epidermis-stratified squamous
   3 .reticular dermis- dense irregular connective tissue
3. hypodermis- fat storage made of adipose

Question 19

what type of epithelium makes up epidermis?

Answer 19

stratified squmous

Question 20

what is the function of this type of epithelium of the epidermis?

Answer 20

protection

Question 21

outer surface of cornea has similar epithelium but why is the upper acellular layer missing?

Answer 21

light can get through so better vision

Question 22

how thick is the entire epithelium?

Answer 22

70 um

Question 23

what types of tissue is dermis composed of?

Answer 23

irregular dense connective tissue

Question 24

what is the main protein component of this reticular dermis irregular dense tissue?

Answer 24

. collagen

Question 25

what is the advantage of irregular arrangement of fibres?

Answer 25

gives it strength in all direction

Question 26

what structures does the dermis contain?

Answer 26

. hair follicles . sebaceous glands . sweat glands . blood vessels

Question 27

explain the appearance of hair follicles?

Answer 27

. edges are dark , there is a whole in the centre

Question 28

what are the hairs made of?

Answer 28

keratin

Question 29

which type of epithelium lines the cup in which the hairs sit?

Answer 29

. covering epithelium

Question 30

what are sebaceous glands?

Answer 30

small glands which secrete oil into hair follicles to lubricate skin and hair

Question 31

describe the nature of sebaceous gland secretion?

Answer 31

oily they secrete sebum | via holocrine

Question 32

describe the relationship between glands and hair follicles?

Answer 32

sebaceous glands are attached to hair follicles and secrete sebum

Question 33

what is the function of sebaceous gland secretion?

Answer 33

. secrete oil which hydrates hair

Question 34

what is the mode of secretion of sebaceous glands?

Answer 34

.holocrine

Question 35

what kind of glands are in sweat glands?

Answer 35

.exocrine glands | . sweat glands produce and secrete substances onto epithelium surface by way of duct (single duct)

Question 36

why does sweat glands appear to be made of series of independent of circular structures?

Answer 36

. adipose tissue containing fat tissue

Question 37

what is the diameter of a secretory acinus/tuble?

Answer 37

7.5 mm to 8.5 mm

Question 38

what is the consistency of sweat gland secretion?

Answer 38

secrete water

Question 39

distinguish between arteries and veins?

Answer 39

arteries-thick wall , they stand high pressure carry oxygenated blood away from heart to body veins- thin wall , carry poor blood from body to heart

Question 40

what sort of epithelium are blood vessels lined with and why?

Answer 40

simple squamous | which allows easy exchange of nutrients and oxygen into body tissue

Question 41

what tissues make up the hypodermis?

Answer 41

adipose connective tissue

Question 42

what is the function of adipose connective tissue?

Answer 42

. energy storage . thermal insulation . mechanical shock absorber

Question 43

what is adipocyte?

Answer 43

sepcialised storage of fat found in connective tissue

Question 44

what average size of adipocyte?

Answer 44

0.1 mm

Question 45

what adipose connective tissue is associated with the eye?

Answer 45

surrounds lacrimal gland

Question 46

How wide is the lumen of a typical goblet cell?

Answer 46

11um in diamter

Question 47

How many layers is the epithelium made of in epidermis of skin?

Answer 47

7

Question 48

What are the blue dots in blood vessels?

Answer 48

red blood cells