Histology - Basic Tissue Types

Question 1

what are the 4 basic tissue types?

Answer 1

epithelial, connective, muscle, nervous

Question 2

what is the function of epithelial tissue?

Answer 2

physical protection

transport control

activiely moving fluids across surfaces

produce specialized secretions

sensory

Question 3

what is the function of connective tissue?

Answer 3

to keep things together

Question 4

what is the function of muscle tissue?

Answer 4

to move things

Question 5

what is the function of nervous tissue?

Answer 5

to coordinate things

Question 6

what type of tissue is blood considered?

Answer 6

connective tissue

Question 7

what are anchoring junctions?

Answer 7

they anchor a cell to another cell or to the basement membrane

Question 8

what are they types of anchoring junctions?

Answer 8

desmosome, adherens, hemidesmosome

Question 9

what does a hemidesmosome do?

Answer 9

anchor the cell to the basement membrane

Question 10

what does a desmosome do? how?

Answer 10

anchor cells together by binding intermediate filaments

Question 11

what is another name for an adherens junction? why?

Answer 11

belt desmosome

they are belt like in appearance

Question 12

what does an adherens do? How?

Answer 12

anchor cells together by binding actin filaments

Question 13

what is the function of a tight junction?

Answer 13

to seal off spaces above and below the epithelium

Question 14

what is the function of a gap junction?

Answer 14

to connect the cytoplasms of two adjacent cells

Question 15

which cells have more cytoplasm? which cells have less?

Answer 15

cells that are more active have more cytoplasm

passive cells have less cytoplasm

Question 16

what are the types of epithelium?

Answer 16

squamous, cuboidal, columnar

Question 17

what type of epithelium is this?

Answer 17

squamous

Question 18

what type of epithelium is this?

Answer 18

cuboidal

Question 19

what type of epithelium is this?

Answer 19

columnar

Question 20

what is the term for this organization of epithelium?

Answer 20

transitional

Question 21

what is the term for this organization of epithelium?

Answer 21

pseudostratified

Question 22

what are the 5 cellular characteristics of epithelia?

Answer 22

1. cohesive interaction between cells, forming continuous cell layers
2. 3 types of membrane domains
3. tight junctions
4. polarized distribution of different organelles
5. quasi-immobility of the group of epithelial cells relative to local environment

Question 23

what are the 3 membrane domains of epithelia?

Answer 23

apical, lateral, basal

Question 24

what is the differece between endocrine and exocrine glands?

Answer 24

exocrine glands have a duct, endocrine glads do not

Question 25

what is the difference between simple vs compound exocrine glands?

Answer 25

simple glands: the duct does not branch (but secretory portions might)

compound glands: the duct branches

Question 26

what type of exocrine gland is this?

Answer 26

simple tubular

Question 27

what type of exocrine gland is this?

Answer 27

simple acinar

Question 28

what type of exocrine gland is this?

Answer 28

simple branched acinar

Question 29

what type of exocrine gland is this?

Answer 29

compound tubulo-acinar

Question 30

what type of exocrine gland is this?

Answer 30

simple coiled tubular

Question 31

what type of exocrine gland is this?

Answer 31

compound acinar

Question 32

what type of exocrine gland is this?

Answer 32

simple branched tubular

Question 33

what type of exocrine gland is this?

Answer 33

compound tubular

Question 34

what are the 3 secretion mechanisms?

Answer 34

merocrine/eccrine, apocrine, holocrine

Question 35

what is merocrine/eccrine secretion?

Answer 35

secretions released via exocytosis

Question 36

what is apocrine secretion?

Answer 36

cells release portions of themselves

Question 37

what is holocrine secretion?

Answer 37

the entire cell disintegrates