Connective Tissue Flashcards

1
Q

What are the three types of fibres found in connective tissue?

A

Reticular

Collagen

Elastin

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2
Q

What are the three types of connective tissue?

A

Loose

Dense Regular

Dense Irregular

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3
Q

What fibre types are found in loose connective tissue?

A

Reticular

Collagen

Elastin

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4
Q

What fibre types are found in dense regular connective tissue?

A

Collagen

Elastin

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5
Q

What fibre types are found in dense irregular connective tissue?

A

Collagen

Elastin

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6
Q

What cells are present in loose connective tissue?

A

Fibroblasts

Macrophages

Mast cells

WBCs

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7
Q

What cells are present in dense regular connective tissue?

A

Fibroblasts

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8
Q

What cells are present in dense irregular connective tissue?

A

Fibroblasts

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9
Q

List 4 functions of loose connective tissue.

A
  • Wraps and cushions organs.
  • Macrophages phagocytise bacteria.
  • Inflammatory role
  • Holds and conveys tissue fluid.
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10
Q

List the functions of dense regular connective tissue.

A
  • Attaches muscles to muscles.
  • Attaches bones to bones.
  • Attaches muscles to bones.
  • Withstands force in one direction.
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11
Q

List the functions of dense irregular connective tissue.

A
  • Provides structural strength.

* Withstands force in many directions.

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12
Q

Where is loose connective found?

A
  • Packages organs.
  • Surrounds capillaries.
  • Forms lamina propria of mucous membranes (mucosa).
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13
Q

Where is dense regular connective tissue found?

A
  • Tendons
  • Ligaments
  • Aponeuroses (flat tendons)
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14
Q

Where is dense irregular connective tissue found?

A
  • Dermis of skin
  • Submucosa of digestive tract
  • Capsules of organs and joints
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15
Q

What is areolar tissue?

A
  • A type of loose connective tissue
  • Hold organs in place
  • Attach epithelial tissue to other underlying tissues.
  • Holds water and salts
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16
Q

What is the lamina propria?

A

A thin layer of loose areolar connective tissue beneath the basement membrane.

17
Q

What is mucosa?

A

The epithelia, basement membrane and lamina propria collectively.

18
Q

What type of cells contain cigar shaped nuclei?

A

Fibroblasts

19
Q

What is the function of fibroblasts?

A
  • Synthesise ground substance (extracellular matrix)

* Synthesise collagen, elastin, fibronectin, reticular fibres.

20
Q

What are enterocytes?

A
  • Simple columnar epithelial absorptive cells found in the small intestine.
  • Contain digestive enzymes.
  • Have microvili on the surface.
21
Q

What are reticular fibres?

A
  • Composed of Type III collagen.
  • Secreted by reticular cells.
  • Crosslink to form a meshwork.
  • Supports soft tissues.
22
Q

How is unilocular/white fat different from multilocular/brown fat?

A
  • White / unilocular adipose tissue stores energy as fats.

* Brown / multilocular adipose tissue generates heat.

23
Q

Why is multilocular adipose tissue brown?

A

Due to the large number of mitochondria.

24
Q

What is the function of the ground substance?

A
  • Provides viscosity and plasticity to the tissues.
  • Provides a medium for intercellular exchange.
  • Lubricates collagen fibres.
25
Q

What is the function of fibronectin?

A

Anchors cells to collagen.

26
Q

How does the appearance of elastin change when stretched?

A

Coiled when unstretched, uncoiled when stretched.

Spontaneously recoils when force is removed.

27
Q

What is a risk associated with the vascular type of Ehlers-Danlos syndrome.

A

•Increased risk of organ rupture / tearing:

  • Intestines
  • Womb during pregnancy
28
Q

List some risks associated with the kyphoscoliosis type of Ehlers-Danlos syndrome.

A
  • Curvature of the spine that can interfere with breathing.

* Severe hypotonia can lead to motor developmental delays. E.g. inability to walk.

29
Q

Name 4 types of EDS.

A

Classic

Hypermobility

Vascular

Kyphoscoliosis