Practical: Blood vessels I and II

Question 1

what organ is this?

Answer 1

aorta

Question 2

what is the arrow seperating?

Answer 2

. The double-headed arrow marks the boundary between the tunica media and the tunica adventitia.

Question 3

what is this a high power view of?

Answer 3

tunica media

Question 4

what are the arrows pointing to?

Answer 4

A high power view of the tunica media. The arrow shows a layer of smooth muscle with nuclei cut in cross section.

Question 5

what is this organ? what is used to stain this?

Answer 5

aorta

picro-orcein is used to stain the elastic fibers

Question 6

what is this? what causes this?

Answer 6

an atherosclerotic plaque (arrow) in the intima. The elastic fibers are also unevenly distributed. Both features are age-related changes in the aorta wall.

Question 7

what are these gaps in the media caused by?

Answer 7

gaps in the media that were filled with lipid or ground substance in life, another age-related change.

Question 8

what is this slide of? what are the arrows pointing to?

Answer 8

The tunica media.

The elastic lamellae (arrows) are irregularly spaced and frayed (age-related change).

Question 9

what organ is this?

Answer 9

IVC (know its a vein because its floppy)

Question 10

what is this?

Answer 10

shows vasa vasorum (arrow) in the adventitia.

Question 11

what organ is the arow pointing to?

Answer 11

a large vein (the renal vein).

Question 12

Answer 12

the large vein

Question 13

what is in the brackets?

Answer 13

longitudinal bundles of smooth muscle

Question 14

what is this?

how do you know?

Answer 14

a large vein

1. The intima is at the top.
2. The media below the intima has only about 3 layers of smooth muscle.
3. The adventitia contains numerous longitudinal bundles of smooth muscle.
4. Bright pink collagen fibers are also seen.

Question 15

what is indicated by the arrow?

Answer 15

the lumen of a coronary artery

Question 16

what is this ?

Answer 16

plaque in the coronary artery

Question 17

Crooanry artery. . The double-headed arrow marks the approximate limits of the ____.

Answer 17

media

Question 18

Answer 18

muscular artery

see a distinct IEL of limit of the tunica media
in larger mscular arteries you would have eel
e.g. coronary a.
suprarenal a.

Question 19

small muscular artery. The arrow is pointing to ____.

Answer 19

prominent IEL

Question 20

Answer 20

muscular a.

an IEL and EEL are clearly visible

Question 21

What type of vessel is this?

Answer 21

vein

* large lumen and relative thin wall

4-2 layers of smooth m.(darker pink)

irregular in shape

media will just be connective titus efibers

Question 22

what is the thin arrow on top left

Answer 22

capillary

Question 23

What is the big arrow?

Answer 23

venule

either no sm or single layer of sm

Question 24

Mixed or elastic artery?

Answer 24

Elastic since tunica media is much larger than intima

Question 25

Mixed artery or elastic?

Answer 25

Mixed. More obvious internal elastic lamina

Question 26

Answer 26

Mixed Musculo-Elastic artery

Question 27

Answer 27

Elastic artery (aorta)

Question 28

(bottom arrow) \_\_\_\_ is a network of small blood vessels that supply the walls of large blood vessels

Answer 28

vasa vasorum

Question 29

what layer of the heart is this?

Answer 29

epicardium contains nerves, blood vessels, adipose tissue

Question 30

what layer of the heart is this?

Answer 30

endocardium

Question 31

the epithelium of the endocardium is \_\_\_epithelium

Answer 31

simple squamous

Question 32

Muscular artery you can clearly see the \_\_\_\_

Answer 32

internal elastic lamina

Question 33

\_\_\_\_ artery

Answer 33

muscular artery you an see the IEL clearly

Question 34

this is a \_\_\_\_

Answer 34

arteriole 2-5 layers of smooth m. tunica media layer contains concentric rings of smooth muscle to do this

Question 35

this is a \_\_\_\_

Answer 35

arteriole round nuceli in the middle media is the thickest, most conspicuous layer, in which nuclei of individual smooth muscle fibers

Question 36

this is a \_\_\_\_

Answer 36

venule single layer of SM

Question 37

Answer 37

venule single layer of smooth m.

Question 38

bracket

Answer 38

endocardium

Question 39

top box

Answer 39