A&P U2 Interim #1 (Epithelial Tissue)

Question 1

Cell specialization

Answer 1

cells have their own specialized “jobs”/functions

Question 2

Tissues

Answer 2

groups of similar cells that come together to perform a common function (organs are made up of particular tissues)

Question 3

Epithelilal Tissue

Answer 3

separates, lines, covers, and organizes; found throughout the body

Question 4

Proper epithelium

Answer 4

covers/lines the outer and inner body

Question 5

Glandular epithelium

Answer 5

forms your glands, secretes hormones & other substances

Question 6

Epithelial Invagination

Answer 6

surface folding in on itself to form a cavity, protects the interior and ensures organization

Question 7

Avascular

Answer 7

all epithelial tissues do not have blood vessels, relies on surrounding connective tissue

Question 8

Squamous cells

Answer 8

flat, thin – great for absorption & diffusion (e.g. present in the air sacs of the lungs and blood vessels, allowing for the diffusion of oxygen from the lungs to the blood vessels, oxygen is then carried throughout the bloodstream to reach every cell)

Question 9

Cuboidal cells

Answer 9

cube shaped, absorbs nutrients & produces secretions – found in the salivary glands (which secrete saliva) and the lining of kidney tubueles (to filter blood and produce urine)

Question 10

Columner cells

Answer 10

column shaped, absorbs nutrients & produces secretions – found in stomach lining/digestive tract (secretes mucus, creating an internal barrier between the digestive system and the rest of the body)

Question 11

Apical

Answer 11

top

Question 12

Basal

Answer 12

bottom

Question 13

Basal lamina & reticular lamina

Answer 13

Basal lamina - closest to the epithelium, reticular lamina - below the basal lamina

Question 14

Exocrine glands

Answer 14

outside hormone secretion, kicks things out (lactation, perspiration)

Question 15

Endocrine glands

Answer 15

secretes hormones into the bloodstream or to nearby cells (inside of the body) – digestive enzymes

Question 16

Microvili

Answer 16

folded extensions of the plasma membrne, allows for more absorption

Question 17

Cilia

Answer 17

catches debris, moves susbtances

Question 18

Lumen

Answer 18

space within the tubes, tracts, cavities, & cells

Question 19

Goblet cell

Answer 19

column shaped, secretes main-component of mucus

Question 20

Transitional epithelium

Answer 20

cuboidal on the top, columner on the bottom (relaxed vs extended), found in the bladder

Question 21

Main functions of epithelial tissues…

Answer 21

protection, absorption (digestive tract), filtration (kidney), and secretion (glandular epithelium)