histology Arteries and Veins

Question 1

Large elastic arteries

Answer 1

aorta, large aortic branches and pulmonary arteries

Question 2

large aortic branches eg

Answer 2

brachiocephalic, subclavian, common carotids, iliac arteries

Question 3

Large elastic arteries اكتر اشي مميز

Answer 3

contains large amount of elastic fibres

Question 4

الفرق بين الarteries وveins

من ناحية الwalls

Answer 4

walls of arteries are thicker than that of veins ليش

to withstand pulsatile flow

Question 5

الفرق بين الarteries وveins

من ناحية ال blood pressure

Answer 5

blood pressures of arteries are higher than that of veins

Question 6

احفظيها زي ما هي

Answer 6

As arteries become smaller, wall thickness gradually decreases but the ratio of wall thickness to lumen diameter increases

Question 7

in large elastic artery

Answer 7

there are no smooth muscle, elastic fibers only.

Question 8

Medium-sized muscular arteries eg

Answer 8

coronary and renal arteries

Question 9

The media of Medium-sized muscular arteries contains

Answer 9

large amount of smooth muscle cells with some elastin and collagen

Question 10

Adventitia of Medium-sized muscular arteries is

Answer 10

very broad, and mostly

contains collagen and elastin.

Question 11

media of Small arteries and arterioles consists almost

Answer 11

of one or two layers of smooth muscle cells, and there is no External Elastic Lamina

Question 12

adventitia of Small arteries and arterioles is

Answer 12

same size as the tunica media layer

merges in with surrounding tissue

Question 13

intima of Small arteries and arterioles is

Answer 13

thin

single layer of squamous epithelium

Question 14

primary site of vascular resistance

Answer 14

Layers of smooth muscle →cفي الوريداتontrolling systemic blood pressure
Arterioles

Question 15

Small arteries and arterioles (in the substance of organs and tissues) extends and branches out

Answer 15

from an artery and leads to capillaries

Question 16

nucleus of the smooth muscle appears

Answer 16

in a longitudinal shape arranged in a circular manner.

Question 17

nucleus of the intima

Answer 17

in circular shape because the cells are

arranged longitudinally.

Question 18

neuromuscular bundle”.

Answer 18

vein , artery, and nerve being together in the body

Question 19

الفرق بين الarteries وveins

من ناحية ال قطر

Answer 19

veins have larger diameters than arteries →larger lumens

Question 20

veins كمية الدم يلي بتحملها ال

Answer 20

two thirds of all circulating blood.

Question 21

الفرق بين الarteries وveins

من ناحية الmedia

Answer 21

the media is much thinner in the veins due to significantly less smooth muscle and elastic tissue.

Question 22

veins اشي ما بصير في ال

Answer 22

do not have the same capacity for elastic recoil and vasoconstriction due to Internal and External elastic layers are not seen in the veins

Question 23

How Blood is propelled forward in veins

Answer 23

by contraction of surrounding muscles and pressure created during inspiration
and expiration.

Question 24

Reverse flow is prevented in veins by

Answer 24

the presence of venous valves.

Question 25

type of wall of the veins

Answer 25

The flaccid walls

Question 26

The flaccid walls شو لازم اتذكر

Answer 26

The flaccid walls of veins predispose venous valves to penetration by tumor and inflammatory processes

Question 27

Venule has

Answer 27

clear tunica intima layer, without any elastic fibres

Question 28

Larger Vein Media layer contains

Answer 28

2-3 layers of muscle cells.

Question 29

Larger Vein Adventitia is

Answer 29

the broadest layer. It contains longitudinal collagen fibres, and vasa vasorum.

Question 30

Larger Vein Intima

Answer 30

A thin endothelial lining, (in some veins, | you may be able to see the valves).

Question 31

الفرق بين الarteries وveins | vasa vasorumمن ناحية ال

Answer 31

Adventitia in veins contains a larger number of vasa vasorum comparing with arteries because blood which pass through veins do not contain nutrients, so veins need another source of nutrients (vasa vasorum).

Question 32

الفرق بين الarteriesMuscular وveins Muscular

Answer 32

there are no internal or external elastic layers surrounding the muscle layer Muscular veins

Question 33

DISTINGUISHING FEATURES

Answer 33

سلايد 17

Question 34

Capillaries consist only of

Answer 34

a single layer of endothelial cells on a basement membrane. There is no media or adventitia.

Question 35

Capillaries diameter

Answer 35

is just wide enough for passage of a red blood cell

Question 36

Capillaries flow

Answer 36

is very slow

Question 37

Capillaries function

Answer 37

exchange of oxygen, nutrients and other substances between blood and tissues.

Question 38

types of capillaries

Answer 38

Continuous fenestrations sinusoid capillaries

Question 39

Continuous capillaries

Answer 39

they only allow smaller molecules, such | as water and ions to pass through their intercellular clefts

Question 40

Continuous capillaries are found in

Answer 40

skeletal muscles, fingers, gonads, and skin and the central nervous system.

Question 41

Continuous capillaries

Answer 41

blood–brain barrier

Question 42

Fenestrated capillaries located in

Answer 42

the endocrine glands, intestines, pancreas, and the glomeruli of the kidney

Question 43

Fenestrated capillaries have

Answer 43

1. Have pores in the endothelial cells | 2. have continuous basement membran

Question 44

Sinusoid blood vessels are primarily located in

Answer 44

the bone marrow, lymph nodes and adrenal glands, and are present in the liver and spleen, where greater movement of cells and materials is necessary

Question 45

Sinusoidal (discontinuous) capillaries

Answer 45

open-pore capillary discontinuous basement membrane allow red and white blood and serum proteins to pass

Question 46

Sinusoidal (discontinuous) capillaries permeability

Answer 46

is increased by large inter-cellular clefts and fewer tight junctions

Question 47

broad adventitia

Answer 47

1. large vein | 2. medium size artery

Question 48

collagen

Answer 48

1. media in general 2. media of medium size muscular artery 3. adventitia of large vein 4. adventitia of medium size muscular artery

Question 49

elastin

Answer 49

media of medium size muscular artery adventitia of medium size muscular artery media

Question 50

venule, the lumen (containing)

Answer 50

RBC red blood cells) and | endothelial cells

Question 51

internal elastic lamina is present in

Answer 51

Arteries although it is less distinctive in large elastic | arteries).

Question 52

internal elastic membrane is absent in

Answer 52

Veins

Question 53

adventitia in veins

Answer 53

thickest layer

Question 54

adventitia in Arteries

Answer 54

thin