Test Four Blood Vessels Flashcards Preview

Histology > Test Four Blood Vessels > Flashcards

Flashcards in Test Four Blood Vessels Deck (25)
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1
Q

Describe venules

A

Endothelium, small amt o layers of smooth muscle, adventitia is thickest layer

2
Q

What are the three types of capillaries

A

Continuous, fenestrated and sinusoids

3
Q

Describe sinusoids capillaries

A

Openings in endothelium and basal lamina, larger in diameter, slow down blood, fenestrae present

4
Q

Describe epicardium

A

Serous covering made up of simple squamous epi, thin CT layer, see adipose

5
Q

Describe arteriole

A

Endothelium like continuous capillary, no subendothelial CT, no internal or external elastic lamina, small amount of smooth muscle, thin adventitial layer

6
Q

Where is vasa vasorum found

A

In big blood vessels in adventitial layer and outer media layer

7
Q

Describe elastic arteries

A

Thick tunica intima, internal elastic lamina, thick layer of smooth muscle 40 to 70 layers, no adventitia and no external elastic lamina

8
Q

Tunica media is made up of

A

Smooth muscle (many layers) and external elastic lamina (thinner)

9
Q

The subendothelial in the tunica intima of blood vessels contains

A

Loose CT for expansion

10
Q

Describe small veins

A

Intima contains endothelium and thin subdenothelial CT layer, media contains smooth muscle with reticular and elastic fibers, valves made up of tunica intima, adventitial layer present

11
Q

Tunica intima consists of

A

Endothelium, subendothelium and internal elastic lamina

12
Q

Describe continuous capillaries

A

Complete endothelium lining, basal lamina, lacks pores

13
Q

The inner most layer of the vessels is

A

Tunica intima

14
Q

What is in the tunica adventitia

A

Collagen fibers and elastic fibers , and vasa Vasorum

15
Q

Describe myocardium

A

Similar to tunica media, thickest part, cardiac muscle

16
Q

The internal elastic lamina of the tunic intima of blood vessels contains

A

Thick band of elastic

17
Q

Function of vasa vasorum

A

Allows for diffusion of O2 and nutrients since its so big and thick

18
Q

Describe large veins

A

Well developed tunica intima, thinner smooth muscle and CT, well developed adventitia, possibility to see cardiac muscle

19
Q

Describe endocardium

A

Similar to tunica intima, simple squamous, subendothelial CT,no elastic lamina

20
Q

What is the middle layer of the blood vessels called

A

Tunica media

21
Q

What is the epi of the tunica intima of blood vessels

A

Simple squamous that rests on basal lamina

22
Q

Describe muscular artery

A

Internal and external elastic lamina, endothelium with thick subendothelial CT, up to 40 layers of smooth muscle

23
Q

What are the three layers of the heart

A

Endocardium, myocardium and epicardium

24
Q

Describe fenestrated capillaries

A

Endothelium has openings, basal lamina is complete, move large molecules through

25
Q

What is the outer layer of blood vessels

A

Tunica adventitia