Ch 5 pt 4

Question 1

Loose organization of collagen and elastic fibers

Answer 1

Highly vascularized
Contains variety of cells

Question 2

Ground substance is abundant and viscous

Answer 2

Found in and under skin
–Surrounds organs, nerve and muscle cells, and blood vessels

Question 3

Adipose CT

Answer 3

Composed mostly of adipocytes

Question 4

2 types of adipose CT

Answer 4

White (stores energy, acts as insulator, cushions)
Brown (found in newborns, lost as we age)

Question 5

Adipocyte number remains stable

Answer 5

Weight gain/loss due to adipocytes enlarging or shrinking

Question 6

Reticular CT

Answer 6

Meshwork of reticular fibers, fibroblasts, leukocytes
Structural framework of many lymphatic organs

Question 7

Reticular CT consists of

Answer 7

Spleen
Thymus
Lymph nodes
Bone marrow

Question 8

Dense regular CT

Answer 8

Tightly packed, parallel collagen fibers
- stacked lasagna noodles

Question 9

Tendons and ligaments

Answer 9

Stress typically applied in a single direction
Few blood vessels
Takes a long time to heal

Question 10

Dense irregular CT

Answer 10

Collagen fibers extend in all directions
support and resistance to stress in multiple directions

Question 11

Dense irregular CT Extensive blood supply
Found in:

Answer 11

Most of the skin dermis
Outer layer of bone and cartilage

Question 12

Elastic CT

Answer 12

Branching, densely packed elastic fibers

Question 13

Elastic CT

Answer 13

Able to stretch and recoil
Found in
Walls of large arteries
Trachea
Vocal cords

Question 14

Supporting CT - Cartilage

Answer 14

Firm, semisolid extracellular matrix
Collagen and elastic protein fibers
More flexible than bone
In areas that need support and must withstand deformation

Question 15

Chondrocytes

Answer 15

mature cells in small spaces called lacunae

Avascular in mature state
Three types
Hyaline cartilage
Fibrocartilage
Elastic cartilage

Question 16

Hyaline cartilage

Answer 16

Most common type
Clear, glassy appearance under microscope

Question 17

Hyaline cartilage

Answer 17

Chondrocytes irregularly scattered
Located in
Nose, trachea, and larynx
Costal cartilage
Ends of long bones
Most of fetal skeleton

Question 18

Fibrocartilage

Answer 18

Weight-bearing cartilage, resists compression
Collagen fibers in bundles between chondrocytes

Question 19

Sparse ground substance

Answer 19

Located in
Intervertebral discs
Pubic symphysis
Meniscus of knee joint

Question 20

Elastic Cartilage

Answer 20

Flexible, springy cartilage
Densely packed elastic fibers
tissue is flexible
Resists deformational pressure
Chondrocytes closely packed
2 locations
external ear
epiglottis

Question 21

Bone (cartilage)

Answer 21

Greater support, but less flexible than cartilage
Organic components (collagen and glycoproteins)
Inorganic components (calcium salts)

Question 22

Osteocytes

Answer 22

Bone cells

Question 23

Lacunae

Answer 23

In spaces in extracellular matrix called

Question 24

Bone functions

Answer 24

Support, and levers for movement
Protects vital organs
Mineral storage
Houses hemopoietic cells, which make blood cells