Exam 1 Part 5

Question 1

reticular CT

Answer 1

network of fibers, fibroblasts, some immune cells

spleen, liver, lymph nodes, thymus

Question 2

dense CT types

Answer 2

regular
irregular
elastic

Question 3

regular dense CT

Answer 3

large amount of collagen (white; strong in 1 direction)
strong and flexible; tendon, ligaments
poor blood supply- slow to heal

Question 4

irregular dense cT

Answer 4

collagen + elastin; is vascularized
fibers are interwoven, strong in all directions
skin, around joints, aorund bone (periosteum)
around some cartilage (perichondrium)

Question 5

peri

Answer 5

around

Question 6

osteo

Answer 6

bone

Question 7

chondro

Answer 7

cartilage

Question 8

elastic dense CT

Answer 8

elastic fibers, collagen -returns to original shpae

arteries, vocal cords, organ walls, trachea

Question 9

Supportive CT types

Answer 9

cartilage

bone

Question 10

cartilage

Answer 10

chondrocytes in cavities (lacunae) in semisolid matrix that they secrete
supportive and protective; associated with articulating surface of bone
often surrounded by dense, irregular CT (perichondrium) containing blood supply and stem cells
avascular when mature

Question 11

cartilage types

Answer 11

hyaline
fibrocartilage
elastic cartilage

Question 12

hyaline cartilage

Answer 12

very fine collagen fibers
on bone ends, white, “gristle” (articular cartilage)
in embryo-will be replaced as bone
in trachea
rib ends
nose
most has perichondrium (but articular cartilage does not)

Question 13

fibrocartilage

Answer 13

mostly collagen, some elastic fibers
strong; forms water filled pads that resist compression; cushions, absorbs shocks
No perichondrium (can’t repair)
Intervetebral discs, pubic bones, meniscus of knee

Question 14

elastic cartilage

Answer 14

many elastic fibers;firm but pliable
has perichondrium (can heal)
external ear, epiglottis of larynx

Question 15

bone

Answer 15

most ridged CT
good vascular supply - metabolically active
mature cells; osteocytes
matrix: hydroxyapatite (phosphorus and Ca2+ salts), collagen fibers
periosteum -dense, irregular CT, covers bone
site of attachment for ligaments and tendons

Question 16

Forms of bone

Answer 16

compact

spongy

Question 17

Compact bone

Answer 17

hard outer portion
osteons
  central canal
  osteocytes
  canaliculi

Question 18

osteons

Answer 18

structural unit of bone

Question 19

central canal

Answer 19

haversian canal. contains artery, vein, nerve; surrounded by concentric layers lamellae of matrix

Question 20

osteocytes

Answer 20

in lacunae. occur b/t adjact lamallae

Question 21

canaliculi

Answer 21

radial canals contain cytoplasmic extensions of osteocytes

Question 22

spongy bone

Answer 22

porous, inner (hard) portion

contains red marrow that produces formed elements of blood

Question 23

fluid cT

Answer 23

blood. hemopoietic tissue

Question 24

hemo

Answer 24

blood

Question 25

poiesis

Answer 25

forming

Question 26

trbeculae

Answer 26

combed part of spongy bone