lecture 2 [tissue level of organization_connective tissue]

Question 1

characteristics of connective tissue

Answer 1

• cells (variety of types, and cells within the tissue aren’t necessarily attached to one another)
• protein (collagen, elastic, or reticular fibers)
• ground substance (mixture of proteins and carbohydrates with variable amounts of salts and water)

Question 2

extracellular matrix

Answer 2

protein fibers + ground substance

Question 3

connective tissue function

Answer 3

• protection
• binding structures together
• support and structural frames

Question 4

what are loose connective tissues?

Answer 4

fewer fibers, more ground substance

Question 5

areolar loose connective tissue structure

Answer 5

structure: fibroblasts, elastic fibers, collagen fibers, ground substance

Question 6

areolar loose connective tissue function

Answer 6

function: packs around and binds organs

Question 7

areolar loose connective tissue location

Answer 7

location: surrounding nerves, vessels, and subcutaneous layer

Question 8

neutrophil

Answer 8

nerve tissue runs tightly packed in loose muscle tissue; areolar tissue reduces pressure placed on this tissue throughout the body

Question 9

adipose loose connective tissue structure

Answer 9

adipocytes

Question 10

adipose loose connective tissue function

Answer 10

protects, stores fats, insulates

Question 11

adipose loose connective tissue location

Answer 11

subcutaneous layer, surrounding select organs (like the heart and kidneys)

Question 12

reticular loose connective tissue structure

Answer 12

reticular fibers, ground substance

Question 13

reticular loose connective tissue function

Answer 13

stroma of lymphatic organs

Question 14

reticular loose connective tissue location

Answer 14

spleen, liver, lymph nodes, bone marrow

Question 15

what is dense connective tissue

Answer 15

more fibers, less ground substance (more solid and supportive, less protective)

Question 16

regular dense connective tissue structure

Answer 16

collage fibers, fibroblast nuclei groundspace

Question 17

regular dense connective tissue function

Answer 17

unidirectional strength and flexibility, weak in any other direction

Question 18

regular dense connective tissue location

Answer 18

tendons (muscle to bone) and ligaments (bone to bone)

Question 19

describe the collagen fibers in regular dense connective tissue

Answer 19

tightly packed, all running in the same direction with no open space

Question 20

irregular dense connective tissue structure

Answer 20

collage fibers (not unidirectional), fibroblast nuclei, ground substance

Question 21

irregular dense connective tissue function

Answer 21

tensile strength in all directions

Question 21

irregular dense connective tissue location

Answer 21

dermis of skins, some capsules of organs

Question 22

elastic dense connective tissue structure

Answer 22

elastic fibers, ground substance (looks similar to regular ct)

Question 23

elastic dense connective tissue function

Answer 23

tensile strength in all directions

Question 24

elastic dense connective tissue location

Answer 24

walls of large arteries

Question 25

hyaline cartilage connective tissue structure

Answer 25

chondrocyte in lacuna, semisolid extracellular matrix. smooth and glossy appearance

Question 26

hyaline cartilage connective tissue function

Answer 26

smooth surfaces for moving joints

Question 27

hyaline cartilage connective tissue location

Answer 27

ends of long bones, fetal skeleton, costal cartilage, most larynx, trachea, and nose

Question 28

fibrocartilage connective tissue structure

Answer 28

chondrocyte in lacuna, collagen fibers

Question 29

fibrocartilage connective tissue function

Answer 29

resists compression and absorbs shock in some joints

Question 30

fibrocartilage connective tissue location

Answer 30

intervertebral disks, pubic synthesis, menisci of knees

Question 31

elastic cartilage connective tissue structure

Answer 31

chondrocyte in lacuna, elastic fibers

Question 32

elastic cartilage connective tissue function

Answer 32

structure and shape with extensive flexibility

Question 33

elastic cartilage connective tissue location

Answer 33

external ear, epiglottis

Question 34

bone connective tissue structure

Answer 34

osteon, osteocyte in lacuna, concentric lamellae, central canal, perforating canal

Question 35

bone connective tissue function

Answer 35

supports soft structures, protects organs, levers for movement, stores calcium and phosphorus, site of blood synthesis

Question 36

bone connective tissue location

Answer 36

bones of the body

Question 37

fluid connective tissue structure

Answer 37

erythrocyte, leukocyte, thrombocyte, plasma

Question 38

fluid connective tissue function

Answer 38

erythrocyte - carry O2
leukocyte - immune response
thrombocyte - clotting
plasma - bulk of water, carries minerals as well

Question 39

fluid connective tissue location

Answer 39

within the body’s blood vessels