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Histology > Unit 2 Topic 1 > Flashcards

Unit 2 Topic 1 Flashcards

1
Q

What layer of the heart contains adipose tissue?

A

epicardium

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2
Q

What layer of the heart is thickest?

A

myocardium

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3
Q

What layer of the heart has fibers and simple squamous epithelium?

A

endocardium

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4
Q

What are purkinje fibers specialized for?

A

rapid conduction of action potentials for coordinated ventricular contraction

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5
Q

What are the collection of cardiac myocytes that are found in the subendocardial layer of the heart?

A

purkinje fibers

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6
Q

What component of the intercalated disk is perpendicular to the myofibrils and provide structural attachment?

A

Transverse component

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7
Q

Where are fascia adherens found?

A

boundaries of cells

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8
Q

What is the function of maculae adherens?

A

bind cells together and reinforce fascia adherens

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9
Q

What component of the intercalated disk are parallel to myofibrils and provide functional attatchment?

A

lateral component

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10
Q

What component of the intercalated disk includes gap junctions that provide ionic continuity to create a synctium and allow coordniated depolarization?

A

Lateral

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11
Q

What takes blood away from the heart?

A

arteries

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12
Q

What type of artery is resistant to large pressure changes and allow stretch and recoil?

A

elastic

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13
Q

What type of artery dampens oscillations in blood pressures and are the majority of arteries?

A

muscular

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14
Q

What regulates blood pressure and are highly active in vasoconstriction and vasodilation?

A

arterioles

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15
Q

What takes blood to the heart?

A

veins

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16
Q

What operates at a lower pressure: veins or arteries?

A

veins

17
Q

What has large, irregular shaped lumen: arteries or veins?

A

veins

18
Q

What has no internal elastic lamina in the tunica intima, but a small amount of connective tissue?

A

veins

19
Q

Do arteries or veins contain valves?

A

veins if they are below the heart

20
Q

What has the smallest diameter: arteries, veins, or capillaries?

A

capillaries

21
Q

What is composed of simple squamous epithelium with an underlying basement membrane and is the site of gas/nutrient/waste exchange?

A

capillaries

22
Q

What type of capillaries are sealed with zona occuldens at the edges are are found in the CNS, lung, CT, and muscle?

A

continuous

23
Q

What is limited in the continuous capillaries?

A

transport is limited to transcytosis and diffusion

24
Q

What capillaries are transcellular openings or windows in endothelium?

A

fenestrated

25
Q

Where are fenestrated capillaries found?

A

kindney, endocrine, and intestines

26
Q

What capillary has large gaps between cells?

A

sinusoids

27
Q

What capillary has large gaps for movement of fluid, proteins, or cells to pass easily?

A

sinusoids

Histology (15 decks)

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