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IPHY 3410 - Exam 1 > Connective tissue > Flashcards

Connective tissue Flashcards

1
Q

Connective tissue characteristics (1)

A

Relatively few cells

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2
Q

Connective tissue characteristics (2)

A

Large amount of extracellular matrix (nonliving material, outside the cells)

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3
Q

What are two examples of materials in the extracellular matrix?

A

Ground substance and fibers

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4
Q

Connective tissue characteristics (3)

A

Extracellular matrix determines tissue properties

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5
Q

Is connective tissue vascularized?

A

Yes, except for cartilage and blood

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6
Q

Connective tissue functions (1)

A

Support and protection

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7
Q

Connective tissue functions (2)

A

Defense (look out for pathogens)

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8
Q

Connective tissue functions (3)

A

Passageway for nerves and vessels to transport/exchange via blood and fluid + insulation and fat storage

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9
Q

What are the cells derived from?

A

Mesenchyme (detached cells in embryo)

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10
Q

What do cells secrete?

A

Extracellular matrix

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11
Q

Could connective tissue possibly have other cells?

A

Yes, example: defense cells

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12
Q

What do collagen fibers do?

A

Resist tension (pulling) like a steel cable

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13
Q

Collagen fibril

A

Group of collagen molecules bound together

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14
Q

Collagen fiber

A

Group of collagen fibrils bound together

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15
Q

Each reticular fiber is made of _____

A

Specialized collagen fibrils

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16
Q

Fibers are ____

A

Short, thin branches

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17
Q

What do reticular fibers form?

A

Delicate networks with lots of space

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18
Q

What are reticular fibers good for?

A

Smooth gliding, deformation

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19
Q

Where are reticular fibers used?

A

Boundaries of tissues (surrounds capillaries = smallest blood vessels)

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20
Q

Elastic fibers main protein is ___

A

Elastin

21
Q

Elastic fibers

A

HIGHLY elastic (recoils to original shape after being stretched)

22
Q

Elastin molecules link to form what?

A

Make large groups to form a fiber (NO FIBRILS)

23
Q

What is in the matrix?

A

Interstitial fluid and additional components like calcium salt in bones

24
Q

What are the four classes of CT?

A

Connective tissue proper, cartilage, bone tissue, blood

25
Q

What do fibroblasts turn into and what do they do?

A

Fibroblasts secrete matrix then become fibrocytes which maintain the matrix

26
Q

Loose connective tissue

A

Lots of ground substance, few fibers

27
Q

Areolar tissue

A

Most widespread, generic CT, lots of tissue fluid, adjoins all epithelia

28
Q

Dense connective tissue

A

Lots of collagen fibers, good at resisting tension/pulling forces

29
Q

What does areolar have to fight infections and store energy?

A

All three fiber types and defense cells

30
Q

Adipose tissue

A

Mostly fat cells

31
Q

Where is adipose tissue found?

A

In hypodermis (superficial fascia) which is located under the dermis

32
Q

Where is visceral fat found?

A

Around internal organs

33
Q

Where is reticular CT found?

A

Exclusively in lymphoid structure (spleen, lymph nodes, red bone marrow)

34
Q

What type of CT is in reticular CT?

A

Dense regular (all collagen fibers run and resist tension in one direction)

35
Q

Where is elastic CT?

A

In bronchial tubes, artery walls, some intervertebral ligaments

36
Q

What fibers does elastic CT have other than elastic?

A

Collagen fibers

37
Q

Cartilage

A

Ground substance attracts and holds large amount of water, very flexible/resilient

38
Q

What is the evolution of cells in cartilage?

A

Cells are chondroblasts (secrete matrix) then become chondrocytes (maintain matrix inside lucanae)

39
Q

What are two characteristics about cartilage?

A

They are avascular (heal slowly) and not innervated

40
Q

Hyaline cartilage

A

Most common, has collagen fibrils (no fibers)

41
Q

Where is hyaline cartilage found?

A

In developing and growing bones, joints, and respiratory tubes

42
Q

Elastic cartilage

A

Has collagen fibrils and elastic fibers, more tolerant of repeated bending than other types

43
Q

Where is elastic cartilage found?

A

In external ear

44
Q

Bone fibers

A

Only have collagen fibers, resists tension

45
Q

Bone ground substance

A

Calcium salts (mostly), resists compression

46
Q

Bone cells

A

Osteoblasts secrete matrix

47
Q

Is blood connective tissue?

A

Yes

48
Q

Blood

A

Large amount of extracellular matrix (plasma), develops from mesenchyme

IPHY 3410 - Exam 1 (5 decks)

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