Anatomy > Connective tissue > Flashcards

Connective tissue Flashcards

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1
Q

true or false: all organs have the same amount of connective tissue

A

false

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2
Q

what is an organ that has a lot of connective tissue

A

the skin

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3
Q

what is an organ that has very little connective tissue

A

the brain

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4
Q

what are the 4 main classes of connective tissue

A

connective tissue (loose and dense CT), cartilage, bone, and blood

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5
Q

connective tissue proper is a strange name. what are a few examples of connective tissue proper

A

fat, tendons, and ligaments

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6
Q

what two groups is connective tissue proper divided into

A

loose and dense CT

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7
Q

what are 5 functions of connective tissue

A

binding and supporting, protecting, insulating, storing fuel, and transporting substances

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8
Q

what are 3 reasons these unique tissues are grouped together

A
  1. they all develop from the same type of embryonic tissue
  2. they have varying degrees of vascularity (abundance of blood vessels)
  3. all connective tissues have an extracellular matrix
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9
Q

what is mesenchyme

A

embryonic connective tissue

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10
Q

what is a type eof connective tissue that is avascular

A

cartilage

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11
Q

what is a matrix

A

?????? (non-living substance that fills spaces between cells)

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12
Q

true or false: epithelial tissues have the most abundant matrix

A

false

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13
Q

what are the two major ingredients in the matrix

A

ground substance and fibers

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14
Q

what is ground substance:

A

watery, unstructured material that fills the spaces between cells

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15
Q

what are the 3 types of fibers that can be found in the matrix of connective tissue

A

collagen, elastic, and reticular fibers

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16
Q

how does the presence of each fiber type impact a connective tissue

A

collagen: provide strength
elastic: stretch and bounce back like rubber bands
reticular: branch to form nets that support your organs

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17
Q

which fiber type is made of thin, short collagen fibers

A

reticular fibers

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18
Q

what is the difference between loose and dense CT proper

A

loose: many spaced btwn fibers of the matric
dense: few spaces btwn fibers of the matrix

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19
Q

what are 3 types of loose CT

A

aerolar, reticular, adipose

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20
Q

what are 3 types of dense

A

regular, irregular, elastic

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21
Q

a type of dense CT with a high number of elastic fibers

A

elastic

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22
Q

function: allows tissue to bounce back after stretching

A

elastic

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23
Q

function: energy reserves, insulates body heat, cushions organs

A

adipose

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24
Q

function: forms a soft skeleton that supports other cells

A

reticular

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25
function: serves as packing material that supports other cells
reticular
26
function: strong when pulled in many directions
irregular
27
function: strong when pulled in many directions; connects muscles to bones or bones to bones
regular
28
has very little matrix and is made of tightly packed fat cells
adipose
29
location: lymph nodes, spleen, bone marrow
reticular
30
location: in the dermis, in fibrous coverings that surround organs and joints
irregular
31
location: under epithealial tissues and around organs
areolar
32
location: under the skin, around the kidneys and heart
adipose
33
location: walls of arteries, ligaments connecting vertebrae, and lings
elastic
34
location: within tendons and ligaments
regular
35
matrix has a gellike ground substance with all 3 fiber types
areolar
36
matrix has a gel-like ground substance, but lacks collagen and elastic fibers in the matrix (only reticular fibers)
reticular
37
matrix has closely packed, parallel collagen fibers running through it
regular
38
matrix has randomly arranged collagen fibers
irregular
39
what are fat calls called
adipocytes
40
what are the 3 function of adipose tissue
energy reserves, insulates body heat, and cushions organs if a person is underweight and has low body far, they will lack these 3 things
41
what is cartilage good ar doing
standing up against compression and tension
42
does cartilage bleed
no it is avascular
43
does cartilage feel pain
no it is innervated
44
what is the ground substance of cartilage like
firm ground substance that causes a rigid, rubber like matrix. this makes cartilage able to stand up against compression and tension very well
45
what is the differnce between a chondroblast and chondrocyte
chondroblast: immature cartilage cells that produce new matrix until skeleton stops growing chondrocyte: mature cartilage cells that are found in lacunae, or cavities
46
if all your chondroblasts stopped working, what would the consequences be
no new matrix would be produced
47
where are chondrocytes found
lacunae or cavities
48
advantages: firm and flexible
hyaline cartilage
49
resists compression well
fibrocartilage
50
strong and very flexible
elastic cartilage
51
located in our articular cartilage at the ends of bones
hyaline cartilage
52
located in places that must withstand extremely heavy pressure
fibrocartilage
53
located in the cartilage that connects the ribs to sternum
hyaline cartilage
54
located in the costal cartilage
hyaline cartilage
55
located in the epiglottis
elastic cartilage
56
located in the external ear
elastic cartilage
57
located in the invertebral disks
fibrocartilage
58
located in the tip of the nose
hyaline cartilage
59
located in the trachea
hylaine cartilage
60
located within the knee cartilage
fibrocartilage
61
matrix consisting of 2 rows of chondrocytes alernating with thick rows of collagen fibers
fibrocartilage
62
matrix contains many collagen fibers and may have a glassy appearance
hyaline cartilage
63
matrix contains many elastic fibers
elastic cartilage
64
most common type if cartilage in the human body
hyaline cartilage
65
the only liquid body tissue is
blood
66
what make blood different than l other types of CT
its does not connect things
67
what makes the matrix of blood uniquie compared to all of the other types of connective tissue- 2 points
contains a liquid called plasma and has no collagen, elastic or rheticular fibers
68
what is the matrix of the blood called
plasma
69
what are the 3 types of blood cells
red blood cell, white blood cell, platelets
70
thrombocyte
platelet
71
erythrocyte
red blood cell
72
leukocyte
white blood cell
73
fight infection
white blood cell
74
clot blood after injury
platelet
75
transports oxygen and co2
red blood cells
76
bone is also known as
asseous tissue
77
what are 4 functions of bone
support, protection, stores calcium, produced blood cells
78
describe the matrix of a bone
rigid due to abundant collagen fibers and calcium salts
79
what is the difference between and osteoblast and an osteocyte
osteoblast: immature bone cells that produce new bone matrix osteocyte: mature bone cells found in cavities called lacunae
80
if someone had no osteoblasts what would they be unable to do
produce new bone matrix
81
is bone vasuclar or avascular and why does it have to be that way
vascular bc it needs oxygen and nutrients to stay healthy
82
cavities that contain osetocytes
lacunae
83
layers of bone matrix that make up an osteon
lamellae
84
type of bone on the outside that is more rigid
compact bone
85
fiber in bone that makes the matrix rigid and strong
collagen
86
part of an osteon that contains a blood vessel
central canal
87
type of bone on the inside that is filled with spaces
spongy bone
88
units that make up a bone
osteons
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