Ch4 Definitions

Question 1

Characteristics of epithelial tissue

Answer 1

Polarity: apical and basal
Apical has lumen
Avascular
High regeneration

Question 2

Single layer of cells

Answer 2

Simple epithelial tissue

Question 3

Many layers of cells

Answer 3

Stratified epithelial tissue

Question 4

Flat cells w disc shaped nuclei

Answer 4

Squamous

Question 5

Cube shaped cells

Answer 5

Cuboidal

Question 6

Taller than wide like columns

Answer 6

Columnar

Question 7

Cells w different heights but all rest of basement membrane

Answer 7

Pseudostratified epithelium

Question 8

Lines urinary bladder, when stretches apical cross flatten, when relaxed apical balloon out

Answer 8

Transitional epithelium

Question 9

Lack ducts produce hormones (long distance) enter through blood

Answer 9

Endocrine glands

Question 10

Secrete products onto body surface act near local area

Answer 10

Exocrine glands

Question 11

Produce mucin, lubricates internal body surfaces

Answer 11

Goblet cells

Question 12

Located near apical, prevent molecules from passing bw cells by forming a seal bw cells

Answer 12

Tight junctions

Question 13

Hold adjacent cells together

Answer 13

Desmosomes

Question 14

Intercellular communication bw neighboring cells

Answer 14

Gap junctions

Question 15

Composed of glycoproteins and collagen attachment site for epithelium fibers belong to underlying connective tissue

Answer 15

Basal lamina

Question 16

Hairlike extensions of apical composed of actin micro filaments longest and most abundant on epithelia absorb nutrients

Answer 16

Microvilli

Question 17

Whip like motile extensions in respiratory tract, microtubules arranged in 9+2 array

Answer 17

Cilia

Question 18

Autosomal recessive disorder has absent dynein arms

Answer 18

Kartagener syndrome

Question 19

Characteristics of connective tissues

Answer 19

Few cells and abundant ECM
composed of ground substance and protein fibers
Types of protein fibers: collagen, reticular, elastic

Question 20

Connective tissue proper

Answer 20

Fibroblasts

Question 21

Cartilage

Answer 21

Chondroblasts

Question 22

Bone

Answer 22

Osteoblasts

Question 23

Adipose cells

Answer 23

Fat, store lipids

Question 24

Strongest and most abundant, structural integrity

Answer 24

Collagen

Question 25

Mesh-like Networks

Answer 25

Reticular

Question 26

Allows tissue to recoil

Answer 26

Elastic

Question 27

Gel like material consists of proteoglycans and glycosaminoglycans
Soak up water

Answer 27

Ground substance

Question 28

Composed of myofilaments
Skeletal, cardiac, smooth

Answer 28

Muscle tissue

Question 29

Pull on bones, long cylinders contain many nuclei striated

Answer 29

Skeletal muscle tissue

Question 30

Located only on heart, 1 nucleus, striated

Answer 30

Cardiac muscle tissue

Question 31

No striations, elongated with nucleus, on muscles with no conscious control of contraction

Answer 31

Smooth muscle tissue

Question 32

Conduct electrical impulses
Dendrites-> cell body -> axon

Answer 32

Neurons

Question 33

Nonconducting cells nourish insulate protect neurons

Answer 33

Neuroglia