TISSUES

Question 1

Group of cells with similar structure and function plus extracellular substance (matrix)

Answer 1

Tissues

Question 2

Histology

Answer 2

Study of tissues

Question 3

Location: Cover body ( linternal & external)

Ex. Skin, kidney, trachea, glands

Answer 3

Epithelial tissues

Question 4

Characteristics of Epithelial Tissues

Answer 4

• Cells close together
• Form most glands
• Have free surface
• Basal Surface: Attaches epithelial cells to underlying tissues

Question 5

Function of Epithelial Tissues
( Ex. Skin)

Answer 5

Protect

Question 6

Function of Epithelial Tissue
(Ex. Skin keeps bacteria out)

Answer 6

Act as Barrier

Question 7

Function of Epithelial Tissue
(Ex. Lungs and kidneys)

Answer 7

Diffusion and Filtration

Question 8

Function of Epithelial Tissue
(Ex. Sweat glands)

Answer 8

Secretion

Question 9

Function of Epithelial Tissue
(Ex. Small Intestine)

Answer 9

Absorption

Question 10

Classification of Epithelial Tissues

Answer 10

According to number of cell layers and shape

Question 11

Number of cell layers

Answer 11

Simple and Stratified

Question 12

Cell Shape

Answer 12

Squamous, Cuboidal, Columnar, Transitional

Question 13

Structure: 1 layer of cells

Answer 13

Simple Epithelium

Question 14

Many layers of Cells

Answer 14

Stratified Epithelium

Question 15

Structure: 1 layer of flat, Tile-like structures
Function: diffusion and filtration
Location: blood vessels, lungs, heart, kidneys

Answer 15

Simple Squamous

Question 16

Structure: 1 layer of square-shaped cells
Function: Secretion
Locstion: glands, ovaries, kidneys

Answer 16

Simple Cuboidal

Question 17

Structure: 1 lsyer of tall, narrow cells
Function: secrete mucus and absorption
Location: stomach, intestines, resp. Tract

Answer 17

Simple Columnar

Question 18

Structure: 1 layer of tall, narrow cells appear stratified but isn’t
Function, secrete mucus and propel debris out of resp. Tract
Location: nasa cavity, trachea

Answer 18

Pseudostratified columnar

Question 19

Structure: many layers of flat, tile-like cells
Function: protect and acts as a barrier
Location: skin, mouth, throat, esophagus

Answer 19

Stratified squamous

Question 20

Structure: special type of stratifies epithelium changes shape
Function: hold fluids
Location: urinary blooder

Answer 20

Transitional

Question 21

Surface not in contact with other cells

Answer 21

Free cell surfaces

Question 22

Increase surface area
Ex. Small intestine

Answer 22

Microvilli

Question 23

Move materials across cell’s surface
Ex. Trachea

Answer 23

Cilia

Question 24

Free Cell Surfaces:
Produce mucus
Ex. Stomach

Answer 24

Goblet cells

Question 25

Bind adjacent together Ex. Intestines

Answer 25

Tight junctions

Question 26

Mechanical links that bind cells

Answer 26

Desmosomes

Question 27

Structures that secrete substances onto a surface, into a cavity, or into blood

Answer 27

Glands

Question 28

Glands with ducts Ex. Sweat or coil glands

Answer 28

Exocrine glands

Question 29

Glands with no ducts Ex. Thyroid, thymus, pituitary glands

Answer 29

Endocrine gland

Question 30

- Cells far apart - Contain large amounts of extracellular matrix

Answer 30

Connective Tissues

Question 31

What does Extracellular matrix contain?

Answer 31

Protein fibers Ground substance (protein & sugar)

Question 32

Type of Protein Fiber: Look like ropes and are flexible but resist stretching

Answer 32

Collagen fiber

Question 33

Type of Protein Fiber: Supporting network that fills spaces between organs and tissues

Answer 33

Reticular fibers

Question 34

Type of protein fiber: Recoil after being stretched

Answer 34

Elastic fiber

Question 35

Functions of Connective Tissue

Answer 35

1. Enclose and Separate 2. Connect Tissues 3. Support and Movement (bones) 4. Storage (bones store calcium) 5. Transport ( blood)

Question 36

Connect bone to muscle

Answer 36

Tendons

Question 37

Connect bone to bone

Answer 37

Ligaments

Question 38

Type of Ordinary Connective Tissue Location: between organs, muscles, glands, skin Structure: Collagen fibers far apart Function: support and protect

Answer 38

Loose

Question 39

Type of Ordinary Connective Tissue Location: tendons, ligaments, skin Structure: collagen fibers packed close together Function: connect and withstand pulling forces

Answer 39

Dense

Question 40

Type of Ordinary Connective Tissue Location: Underskin and around organs Structure: collagen and elastic fibers, cells filled with lipids Functions: storage and insulste

Answer 40

Adipose

Question 41

- type of connective tissue - composed of chondrocytes - contain collagen - withstand compression - provides support, flexibility, strength

Answer 41

Cartilage

Question 42

Type of Cartilage: Location: covers ends of bones Structure: some collagen fibers Function: reduces friction

Answer 42

Hyaline Cartilage

Question 43

Type of Cartilage: Location: between vertebra Structure: lots of collagen fibers Function: can withstand compression

Answer 43

Fibrocartilage

Question 44

Type of Cartilage: Location: ear and tip of nose Structure: elastic fiber Function: can recoil

Answer 44

Elastic cartilage

Question 45

- hard connective tissue - composed of osteocytes

Answer 45

Bone

Question 46

Types of bones

Answer 46

Compact and Spongy

Question 47

- liquid connective tissue - Erythrocytes, leukocytes, platelets - transport food, oxygen, waste, hormones

Answer 47

Blood

Question 48

Substitution of dead cells for viable cells

Answer 48

Tissue Repair

Question 49

Cells of same type develop (no scar)

Answer 49

Regeneration

Question 50

Cells of a different type develop (scar)

Answer 50

Replacement