4. epithelial tissues

Question 1

attach to goblet cells for lubrication

attach to cilia in airways and reproductive tract

absorption of nutrients in intestine

Answer 1

columnar epithelial cells

Question 2

allows for stretching and recoilability

bladder lining

Answer 2

transitional epithelial cells

Question 3

protection from head/cold/microbes/chemicals

water proofing

lining of heart, lungs, mucus membrane

flat sheets of very flat cells

Answer 3

squamous epithelial cells

Question 4

lining ducts of sweat and oil glands of the skin

secrete mucus to protect exocrine gland ducts

Answer 4

cuboidal epithelial cells

Question 5

6 characteristics of epithelial cells

Answer 5

continuous sheet-tightly packed cells prevent moment, gap junction allow passage.
exposed surface-open on one side, attached to “basement membrane”
avascular- have no blood vessels, nutrient obtained thru diffusion.
nerves- have many nerves to detect sensations and send information to brain.
regeneration-high capacity for renewal due to constant wear and tear.
secrete,absorb-mucus, nutrients, wastes

Question 6

histology

Answer 6

study of tissues

Question 7

physiology

Answer 7

function

Question 8

pathology

Answer 8

disease

Question 9

what are some protection functions of epithelial lining cells.

Answer 9

prevent: dehydration (waterproof)
:invasion of microbes
:damage “wear and tear” injury, chemicals

detection: sensory receptors for pain, chemicals (taste buds)

Question 10

secrete directly into blood.

ex: hormones (insulin, throid gland, pituitary gland)

Answer 10

endocrine glands

Question 11

secrete into ducts that lead out of the body

ex:mucus membranes, sweat glands, salvia glands.

Answer 11

exocrine glands

Question 12

secrete into blood and ducts

ex: pancreas insulin into blood and enzymes (duct) to intestines

Answer 12

mixed glands