Tissues

Question 1

what is epithelial tissue?

Answer 1

It is tissue that covers surfaces and separates compartments

Question 2

what are the four types of tissue that make up the entire body?

Answer 2

epithelial , connective, muscle and nerve

Question 3

describe epithelial tissue

Answer 3

no contract inhibition

forms cell - cell / cell - ECM junctions to fill gaps

Question 4

what do desmosomes do?

Answer 4

provide a strong bond between adjacent epithelial cells

Question 5

what do hemidesmosomes do?

Answer 5

attach epithelial cell to basement membrane

Question 6

what does cilia do?

Answer 6

Provides a mechanism for movement of material over the surface of epithelia

Question 7

what do tight/occluding junctions do?

Answer 7

Seals intracellular space.

Maintains integrity of epithelial layer

Question 8

what do gap junctions allow?

Answer 8

Cell - cell communication

Question 9

what does microvilli do?

Answer 9

Increase surface area.

Question 10

what is the basement membrane made off?

Answer 10

basal lamina

reticular lamina

Question 11

what is simple epithelia ?

Answer 11

one layer of epithelial cells - can be different types tho

Question 12

What does a squamous cell look like

Answer 12

bit like a smooth muscle cell - long n thin

Question 13

what is stratishpied epithelia?

Answer 13

multiple layers of epithelial tissue

Question 14

Where and simple squamous cells found?

Answer 14

Alveoli and capillaries - thin to allow for easy diffusion

Question 15

where is simple cuboidal epithelia found?

Answer 15

lining of nephrons - performs secretion and absorption / pumping

Question 16

Where is simple columnar epithelia found?

Answer 16

lines the digestive tract. Can be ciliated to move mucus

Question 17

where is stratified squamous epithelia found?

Answer 17

epidermis - thick - layers broken off for new growth

Question 18

where is stratisphied cuboidal epithelial found?

Answer 18

Ducts of sweat glands - production

Question 19

where is stratisphied columnar epithelia found?

Answer 19

pharynx - protection and secretion

Question 20

what is psuedostratisfied columnar epithelia?

Answer 20

all same layer but slightly overlapping - found in the trachea

Question 21

Describe the epithelial compartments of the liver.

Answer 21

Hepatocytes arranged int rows between blood vessels .
Do secretion and other shit
Support epithelial cells line blood vessels and bile ducts

Question 22

describe the epithelial compartments of the kidneys

Answer 22

epithelial cells arranged into nephrons
filter blood and absorb filtrate etc.
support cells line blood vessels and renal pelvis which receives toxic urine

Question 23

what are some consequences of abnormal function of covering and lining or epithelia ?

Answer 23

under/over proliferation
over / under secretion
loss of ciliary beat

Question 24

what is a gland?

Answer 24

a collection of multi or single cellular secretory epithelial cells

Question 25

what does the endocrine gland do?

Answer 25

secretes into blood . eg. adrenal cortex

Question 26

what does an exocrine gland do?

Answer 26

secrete to surface -e.g sweat gland

Question 27

what is a circular simple gland called?

Answer 27

acinar

Question 28

what is a simple long gland called ?

Answer 28

tubular

Question 29

what is a compound gland called?

Answer 29

tubuloacinar gland

Question 30

what are the consequences of abnormal glandular function?

Answer 30

over production - pituarity giantism | under production - pituitary dwarfism

Question 31

name 2 fibre connective tissues

Answer 31

collagen | elastic fibres

Question 32

give some description of collagen

Answer 32

30% of body weight | flexible but inelastic with great tensile strength

Question 33

given some description of elastic fibres

Answer 33

protein elastin - can strength to 1.5x its original length and returns to it's original shape. Yellow, found in sheets/ Microfibrils and amorphous content

Question 34

name 3 ground substance connective tissue

Answer 34

proteoglycans hyaluronic acid glycoproteins

Question 35

is tissue fluid epithelial tissue or connective tissue?

Answer 35

connectivee

Question 36

describe loose connective tissue

Answer 36

fixed cells - fibroblasts, macrophages, adipocytes, mast cells transient cells - white blood cells

Question 37

what happens if the blood/bone marrow has abnormal function ?

Answer 37

leukemia

Question 38

what happens if loose/dense connective tissue has abnormal function?

Answer 38

loss/abnormal fibres

Question 39

what happens if cartilage connective tissue has an abnormal function?

Answer 39

tear

Question 40

what happens if bone has an abnormal function?

Answer 40

osteoporosis