FORM & FUNCTION (Classification of Tissues)

Question 1

Tissue:

Answer 1

-aggregation of cells and intercellular substances specialized to perform particular functions

Question 2

Organ:

Answer 2

-more complex structures that is comprised of different arrangements of four basic tissues
-normal presence of these forms are critical for the function of the organism

Question 3

4 basic tissues:

Answer 3

1. Epithelium (epithelial tissue)
2. Connective tissue
3. Muscle
4. Nervous tissue
   *organs are various arrangements of all or a mix of some of these tissues

Question 4

Identification of tissues:

Answer 4

-generally achieved by presence of specific features/components of cells and relationships

Question 5

Embryonic origins of the 4 basic tissues:

Answer 5

1. Endoderm
2. Mesoderm (almost all connective tissue, skeletal, cardiac and smooth muscle)
3. Ectoderm

Question 6

ectoderm types

Answer 6

1. Surface ectoderm
2. Neuroectoderm

Question 7

Shape of epithelial cells (3):

Answer 7

*how they are classified
1.Squamous
>Simple
>stratified
2. Cuboidal
>Simple
>Stratified
3. Columnar
>Simple
>Pseudostratified
>Stratified

Question 8

Column meaning:

Answer 8

-“a pillar”
-tall and slender cells

Question 9

Epi meaning:

Answer 9

-“upon or over”
-covers surfaces and lines cavities
-above deeper tissues

Question 10

Pseudo meaning:

Answer 10

-“false”
-ex. pseudostratified epithelium appears to be stratified but it is not

Question 11

Squam meaning:

Answer 11

-“a scale”
-thin and flat cells

Question 12

Strat meaning:

Answer 12

-“a layer”
-layered

Question 13

Glandular epithelium:

Answer 13

-secretory cells of exocrine and endocrine glands

Question 14

Surface epithelium

Answer 14

-sheets of cells covering the external and internal surfaces of the body
>simple
>pseudostratified
>stratified
>sensory

Question 15

simple epithelium:

Answer 15

-single layer of cells
>simple squamous
>simple cuboidal
>simple columnar

Question 16

Pseudeostratified epithelium:

Answer 16

-all cells contract the basement membrane, but not all reach the free surface
>pseudostratified columnar epithelium
>transitional epithelium

Question 17

Stratified epithelium:

Answer 17

-2 or more layers of cells
>stratified squamous
>stratified cuboidal
>stratified columnar

Question 18

Sensory epithelium:

Answer 18

-layers of sensory and supportive cells in the retina, internal ear, olfactory mucosa and taste buds