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Histology > Circulatory System Part II > Flashcards

Circulatory System Part II Flashcards

1
Q

conducts blood away from the organs and tissues to the heart

A

VEINS

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2
Q

Types of Veins:

A

A. LARGE VEINS
B. SMALL AND MEDIUM VEINS
C. VENULES

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3
Q

Large Veins:

A

Vena Cava
Pulmonary Veins
Mesenteric Vein

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4
Q

SMALL AND MEDIUM VEINS:

A

External Jugular Vein

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5
Q

Unnamed and Involved the exchanged of metabolites and diapedesis

A

VENULES

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6
Q

Three basic layers of veins:

A

Tunica Intima
Tunica Media
Tunica Adventitia

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7
Q

Three basic layers of veins:

simple squamous (endothelium)

A

Tunica Intima

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8
Q

Three basic layers of veins:

no internal elastic layer

A

Tunica Intima

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9
Q

Three basic layers of veins:

subendothelium is lacking

A

Tunica Intima

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10
Q

Three basic layers of veins:

composed of smooth muscles

A

Tunica Media

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11
Q

Three basic layers of veins:

thinnest coat

A

Tunica Media

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12
Q

Three basic layers of veins:

thickest coat

A

Tunica Adventitia

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13
Q

Three basic layers of veins:

no external elastic layer

A

Tunica Adventitia

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14
Q

Three basic layers of veins:

Fibroelastic connective tissue and fibers

A

Tunica Adventitia

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15
Q

Three basic layers of veins:

has vasa vasorum

A

Tunica Adventitia

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16
Q

What type of endothelial layer is there in capillaries?

A

single layer of endothelial cells (simple squamous)

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17
Q

exhibits selective permeability by permitting exchange of oxygen and carbon dioxide, nutrients, and waste products between blood and tissues

A

CAPILLARIES

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18
Q

does not exhibit tunica media and adventitia

A

CAPILLARIES

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19
Q

diameter ranges from 7-9 um

A

CAPILLARIES

20
Q

branch without a change in their diameter

A

CAPILLARIES

21
Q

are variable in length, but in general they are approximately 1mm long.

A

CAPILLARIES

22
Q

Red blood cells flow through most capillaries in a single pile & are frequently folded as they pass through the smaller-diameter capillaries.

A

CAPILLARIES

23
Q

The ______ consists primarily of endothelial cells which rest on a basement membrane. Outside the basement membrane is a delicate layer of loose connective tissue that merges with the connective tissue surrounding the capillary.

A

capillary wall

24
Q

Along the length of the capillary are some scattered cells that are closely associated with the endothelial cells. These scattered cells lie between the basement membrane and the endothelial cells and are called _____

A

pericapillary cells

25
Q

They are apparently fibroblasts, macrophages, or undifferentiated smooth muscle cells.

A

pericapillary cells

26
Q

Types of Capillaries:

A

A. CONTINUOS (SOMATIC) CAPILLARIES
B. FENESTRATED (VISCERAL) CAPILLARIES
C. SINUSOIDAL CAPILLARIES

27
Q

Types of Capillaries:

most common

A

CONTINUOS (SOMATIC) CAPILLARIES

28
Q

Types of Capillaries:

contains numerous pinocytic vesicles, except in the Central Nervous System

A

CONTINUOS (SOMATIC) CAPILLARIES

29
Q

Types of Capillaries:

lack fenestra and have continuous basal lamina

A

CONTINUOS (SOMATIC) CAPILLARIES

30
Q

Types of Capillaries:

their walls exhibit no gaps between endothelial cells

A

CONTINUOS (SOMATIC) CAPILLARIES

31
Q

Types of Capillaries:

endothelial cells are joined and form an uninterrupted solid lining

A

CONTINUOS (SOMATIC) CAPILLARIES

32
Q

Continuous (Somatic) Capillaries is located at:

A
  • nervous tissue
  • muscles
  • connective tissue
  • exocrine glands
  • respiratory and skin
33
Q

Continuous (Somatic) Capillaries is present in:

A
  • tight junctions
  • desmosomes
  • gap junctions
34
Q

Types of Capillaries:

characterized by openings or fenestrations (pores)

A

FENESTRATED (VISCERAL) CAPILLARIES

35
Q

Types of Capillaries:

Function of this is the rapid exchange of molecules between blood and the tissue

A

FENESTRATED (VISCERAL) CAPILLARIES

36
Q

FENESTRATED (VISCERAL) CAPILLARIES is located at:

A
  • choroid plexus
  • endocrine
  • small intestines
  • kidney glomeruli
37
Q

Types of Capillaries:

are blood vessels that exhibit irregular, tortuous path

A

SINUSOIDAL CAPILLARIES

38
Q

Types of Capillaries:

their much wider diameters slow down the flow of blood.

A

SINUSOIDAL CAPILLARIES

39
Q

Types of Capillaries:

endothelial cell junctions are rare in _____ and wide gaps exist between individual endothelial cells

A

SINUSOIDAL CAPILLARIES

40
Q

Types of Capillaries:

basement membrane underlying the endothelium is either incomplete or absent (so a direct exchange of molecules occurs between blood contents and cells)

A

SINUSOIDAL CAPILLARIES

41
Q

SINUSOIDAL CAPILLARIES is located at:

A
  • Liver
  • Spleen
  • Bone marrow
42
Q

LYMPHATIC VASCULAR SYSTEM is Consists of:

A
  1. Lymph Capillaries
  2. Lymph Vessels
43
Q

To allow greater permeability, the endothelium in ________ is extremely thin.

A

lymph capillaries and vessels

44
Q

The structure of _______is similar to that of veins except that their walls are much thinner.

A

larger lymphatic vessels

45
Q

_____ contain more valves to prevent a backflow of collected lymph.

A

Lymph vessels

46
Q

________ in the lymphatic vessels is similar to that of blood movement; that is, the contractions of surrounding skeletal muscles force the lymph to move forward

A

Lymph movement

47
Q

found in all tissues except the CNS, cartilage, bone and bone marrow, thymus, placenta, and teeth

A

LYMPHATIC VASCULAR SYSTEM

Histology (37 decks)

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