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Biology > 4.1 Types of tissues > Flashcards

4.1 Types of tissues Flashcards

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1
Q

A tissue is a ?

A

group of cells that usually have a common origin in an embryo and function together to carry out specialized activities

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2
Q

Which tissue is

This tissue allows the body to interact with both its internal and external environments.

A

Epithelial Tissue.

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3
Q

Which tissue is this?
store energy reserves as fat, and help provide the body with immunity to disease-causing organisms.

A

Connective Tissue

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4
Q

Which tissue has this function?

generates heat that warms the body.

A

Muscular Tissue

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5
Q

Which junction
consist of weblike strands of transmembrane proteins that fuse together the outer surfaces of adjacent plasma membranes to seal off passageways between adjacent cells

A

Tight Junctions

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6
Q

Which cells have tight Junctions

A

Stomach Cells
Intestinal cells
Urinary Bladder cells

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7
Q

Tight Junctions help They inhibit the passage of
Block substances between cells and prevent the contents of these organs from leaking into the blood or surrounding tissues.

A

Block substances between cells and prevent the contents of these organs from leaking into the blood or surrounding tissues.

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8
Q

This Junctions contains a plaque

A

Adherens Junctions

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9
Q

Where is Adherins plaque located

A

The plaque is located on the inside of the plasma membrane. That attaches both membrane together.

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10
Q

What are between The plaque in a Adhering Junction

A

Transmebrane Glycoproteins called Cadherens

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11
Q

What does the Adhesion belt in a Ahderens Junction do?

A

Helps with stretching of the cell.

Example: Lung, Bladder, skin, Intestine.

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12
Q

Which type of cell junction prevents the contents of organs from leaking into surrounding tissues?

A

Tight Junctions

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13
Q

Which types of cell junctions are found in epithelial tissue?

A
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14
Q

In Desmsemes Junctions what do their plaques connect too

A

Intermediate filaments

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15
Q

Desmsemes Junction function

A

Desmosomes prevent epidermal cells from separating under tension and cardiac muscle cells from pulling apart during contraction.

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16
Q

How do Hemidesmosomes Look Like?

A

resemble desmosomes, but they do not link adjacent cells.

17
Q

the transmembrane glycoproteins in hemidesmosomes?

A

integrins rather than cadher- ins.

18
Q

In Hemidesmosomes the Integrins link with what protein

A

Laminin

19
Q

What is hemidesmosomes Function?

A

anchor cells not to each other but to the basement membrane.

20
Q

What is gap junctions, Function membrane proteins called connexins form tiny fluid-filled tunnels called connexons that connect neighboring cells

A

membrane proteins called connexins form tiny fluid-filled tunnels called connexons that connect neighboring cells

21
Q

Which type of cell junction functions in communication between adjacent cells?

A

Gap Junction

22
Q

What are some differences of Epithelial and Connective tissue.

A

Packing:
Epithelial: Tightly packed
Connective tissue: Loosely fit

ECF
Epithelial: No ECF or very little
Connective: A lot of ECF

Vascular
Epithelial: No blood
Connective: Vascular

23
Q

Why are epithelial and connective tissues found adjacent to each other?

A

epithelial tissue lacks blood vessels and forms sur- faces, it is always found immediately adjacent to blood vessel–rich connective tissue, which enables it to make the exchanges with blood

24
Q

Epithelial tissue is arranged in two general patterns in the body
What are they?
: (1) covering and lining various sur- faces and (2) forming the secreting portions of glands.

Functionally, epithelial tissue protects, secretes (mucus, hormones, and enzymes), absorbs (nutrients in the gastrointestinal tract), and excretes (various substances in the urinary tract).

A

(1) covering and lining various surfaces

(2) forming the secreting portions of glands.

25
Q

What are some of the Functions of Epithelial Tissue

A

Secretes (mucus, hormones, and enzymes)
Absorbs (nutrients in the gastrointestinal tract),

Excretes (various substances in the urinary tract).

26
Q

What are the three Surfaces of Epithelial Tissue

A

The apical (free) Surfaces

The lateral surfaces

The Basal Surfaces

27
Q

True or False

Hemidesmosomes in the basal surfaces of the deepest layer of epithelial cells anchor the epithelium to the basement membrane

A

true

28
Q

the Basal Membrane Contains two Layers, What are they?

A

the basal lamina

Reticular lamina.

29
Q

Fibroblasts
are large flat cells that move through connective tissue and secrete fibers and ground substance.

A

true

30
Q

In Reticular lamina Which is closer to the connective Tissue, Which college is produced by which?

A

Fibroblast

31
Q

Epithelial tissue may be divided into two types. (1)

A

(1) Covering and lining epithelium, surface epithelium, forms the outer covering of the skin and some internal organs.

Forms the inner lining of: blood vessels, ducts, body cavities, and the interior of the respiratory, digestive, urinary, and reproductive systems.

(2) Glandular epithelium makes up the secreting portion of glands such as the thyroid gland, adrenal glands, sweat glands, and digestive glands.

32
Q

Epithelial tissue may be divided into two types. (1)

A

(1) Covering and lining epithelium, surface epithelium, forms the outer covering of the skin and some internal organs.

Forms the inner lining of: blood vessels, ducts, body cavities, and the interior of the respiratory, digestive, urinary, and reproductive systems.

(2) Glandular epithelium makes up the secreting portion of glands such as the thyroid gland, adrenal glands, sweat glands, and digestive glands.

33
Q

What is the function of glandular epithelium

A

To Secrete.

34
Q

What function do the Endocrine Gland in Glandular Epithelium Do?

A

Hormones, enter the interstitial fluid and then diffuse into the bloodstream without flowing through a duct.

They have a far-reaching effect.

35
Q

What function do the Exdocrine Gland in Glandular Epithelium Do?

A

excrete their products into ducts that empty onto the surface of a covering and lining epithelium such as the skin surface or the lumen of a hollow organ.

They Have a Limited Effect/ Could be harmful

36
Q

What are the three Exocrine Glands

A

merocrine glands :released from the cell in secretory vesicles via exocytosis

Apocrine glands: portion of the cell pinches off by exocytosis from the rest of the cell to release the secretion

holocrine glands: secretory cell matures, it ruptures and becomes the secretory product

37
Q

To what class of glands do sebaceous (oil) glands belong? Salivary glands?

A

Oil: Halocrine Glands
Saliva Glands: Merocrine glands

38
Q

Where are endothelium and mesothelium located?

A

Biology (12 decks)

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