Cardiovascular Part 2

Question 1

What does R-ATRM contain anteriorly?

Answer 1

Right auricle

Question 2

What does R-ATRM contain posteriorly?

Answer 2

sinus venram

Question 3

What is sinus venarum?

Answer 3

smooth walled part of atrm

Question 4

location of sinus venarum?

Answer 4

posteriorly of muscular ridge

Question 5

what empties into sinus venarum?

Answer 5

1-vena cava (both)
2-coronary sinus

Question 6

What is the crista termanlis

Answer 6

a muscular ridge

Question 7

What is the function of crista terminalis?

Answer 7

separates anterior & posterior parts of R-Atrm

Question 8

wdym by separating post&ante of R-Atrm

Answer 8

seperating cardiac & smooth muscles

Question 9

how is crista terminalis indicated externally

Answer 9

by sulcus terminalis

Question 10

where is the right auricle located?

Answer 10

anterior to crista terminalis

Question 11

R-auricle attributes

Answer 11

roughens by muscle fibers

Question 12

muscle fibers in auricle are called

Answer 12

pectinate muscles

Question 13

Function of interatrial spetum

Answer 13

separate the 2 atriums

Question 14

Location of inreratrial spetum

Answer 14

posteriorly left to R-Atrium

Question 15

What is the fossa ovalis?

Answer 15

remnant of fetal foreman ovale

Question 16

location of fossa ovalis

Answer 16

right atrium on the interatrial spetum

Question 17

fossa ovalis are like

Answer 17

fingerprint

Question 18

location & function of superior vena cava

Answer 18

opens in upper R-atrm, returns blood from upper body

Question 19

location & function of inferior vena cava

Answer 19

opens in lower R-atrm, returns blood from lower half body

Question 20

location & function of coronary sinus

Answer 20

opens in lower R-atrm, near IVC
returns blood from walls of heart

Question 21

location & function of right atrioventricular orifice

Answer 21

anterior to IVC opening
Leads to R-vent
guarded by tricuspid valve

Question 22

Right ventricle forms most of

Answer 22

sternocostal/anterior surface

Question 23

Name 2 structural differences between R-vent & R-atrm

Answer 23

1-R-vent thicker walls
2-R-vent have irregular muscular ridges

Question 24

What are the irregular muscular ridges in R-vent called?

Answer 24

trabeculae carneae “fleshy beams”

Question 25

What is the infundubulim?

Answer 25

Funnel shaped, the outflow tract of R-vent gives rise to Pulmonary Trunk

Question 26

another name for conus arteriosus?

Answer 26

infundibulum

Question 27

What are the spetomarginal trabeculae?

Answer 27

1-free band of cardiac muscle 2- connects intervent spetum to ant. papillary muscles 3-crosses vent cavity

Question 28

what are the papillary muscles?

Answer 28

1-3 irregular muscle bundles, 2-line vent walls except conus arterious 3- connect vent wall to atriovent valve

Question 29

name papillary muscles of R-vent

Answer 29

Anterior Posterior Spetal

Question 30

What are the chordae tendinea? origin? insert?

Answer 30

1-Slender threads that connect papillary to surface of tricuspis 2-origin from pap muscles 3-insert into free ridges & surface of cusps

Question 31

location of the tricuspid valve?

Answer 31

between R-vent & R-atrm

Question 32

right atrioventricular valve is formed

Answer 32

by 3 fibrous cusps

Question 33

function of tricuspid valve?

Answer 33

Blocks reflux of blood into R-atrm When R-vent contracts

Question 34

Location of pulmonary valve

Answer 34

apex of infundibulum

Question 35

Pulmonary valve formed by

Answer 35

3 semilunar cuspus, concave from above

Question 36

Function of Pulmonary valve?

Answer 36

open to prevent backflow of blood when vent relaxes

Question 37

L-Atrm forms most of

Answer 37

posterior/base surface

Question 38

What is the left auricle

Answer 38

appendage of L-atrm

Question 39

L-auricle contains

Answer 39

musculi pectinati

Question 40

Pectinate muscles are in

Answer 40

only the auricle

Question 41

What is the smooth wall portion of L-atrm

Answer 41

inflow portion, in the posterior half, receives 4 pulm veins

Question 42

L-vent forms for

Answer 42

apex of heart, has thickest walls

Question 43

Why does the L-vent has the thickest muscular walls?

Answer 43

Cuz it pumps blood further than R-vent

Question 44

Where is the bicuspid valve?

Answer 44

between L-Atrm & L-vent

Question 45

Mitral valve is formed by?

Answer 45

1-anterior cusp 2-posterior cusp

Question 46

Function of bicuspid valve?

Answer 46

blocks backflow of blood to L-atrm, wehn L-vent contract

Question 47

How many papillar muscles Left vent conatins

Answer 47

1-Anterior papillary muscle 2-Posterior papillary muscle

Question 48

Papillar muscles of L-vent connects to

Answer 48

mitral valve

Question 49

Chordae tendineae in left vent to right vent

Answer 49

Thicker but less numerous

Question 50

Aortic valve structure is

Answer 50

similar to pulmonary valve

Question 51

aortic sinuses located

Answer 51

deep to cusps of the aortic valves

Question 52

aortic sinuses (left&right) give rise to

Answer 52

R&L coronary arteries

Question 53

Relationship between aortic & pulmonary valves

Answer 53

open & close together

Question 54

Relationship between the two atrioventricular valves

Answer 54

open &close together

Question 55

Mitral & tricuspid valves function

Answer 55

prevents backflow of blood to atrm

Question 56

vessels are a system

Answer 56

closed system begins and ends in heart

Question 57

types of vessels are

Answer 57

arteries, capillaries, & veins

Question 58

Arteries always

Answer 58

carry blood away from heart

Question 59

veins always

Answer 59

carry blood towards the heart

Question 60

capillary functions?

Answer 60

1-contact tissue to serve cell needs 2-joins arteries & veins 3-gas & nutrient exchange

Question 61

arteries become

Answer 61

arterioles when they feed into capillaries

Question 62

when veins come closer to heart

Answer 62

they become larger

Question 63

Layers of arteries & veins

Answer 63

1-Tunica interna/intima (deepest) 2-Tunica media 3-Tunica externa/adventitia (superficial in comparison)

Question 64

What are the elastic arteries? another name for them?

Answer 64

Directly or close to heart conducting arteries

Question 65

name elastic arteries

Answer 65

1-Aorta 2-Common cortoid 3-subclavian 4-pulmonary trunk

Question 66

Distributing arteries located? another name?

Answer 66

distal to elastic Muscular arteries

Question 67

examples of muscular arteries

Answer 67

1- external&internal cartoids 2-Brachial 3-femoral 4-renal 5-splenic

Question 68

How many structural types of capillaries? and what are they?

Answer 68

3 1-Continues 2-Fenstered 3-Discontinous

Question 69

Features of each type of capillaries

Answer 69

1-Cont.= complete basal lamina& continuous endothelial lining 2-Fenestred= complete basal lamina& fenestred endothelial lining 3- Discontinous= incomplete basal lamina& fenestred endothelial lining

Question 70

Venules formed

Answer 70

when capillary bess unite

Question 71

Veins made from

Answer 71

union of venules

Question 72

whats unique to veins?

Answer 72

1-Large lumens=little resistance to blood flow 2-valves= to prevent backflow blood