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ANATOMY > Coronory Arteries And Internal Heart > Flashcards

Coronory Arteries And Internal Heart Flashcards

1
Q

Where do the L R coronary arteries arise from

A

Ascending aorta

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2
Q

Cardiac veins return Venus bood to the coronary _____ in R atrium

A

Sinus

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3
Q

Which nodes in the heart do branches R coronary artery supply

A

Sinoatrial
Atrioventricular

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4
Q

Which branch of the R coronary artery supplies the inferior border is the heart

A

Right marginal

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5
Q

What is the name of the continuation of the coronary after on the inferior/diaphragmatic surface of heart

A

Posteriori inter-ventricular artery

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6
Q

Left coronary artery branches to 2 terminal branches, what are they

A

Anterior interventricular (LAD)
Circumflex

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7
Q

Which artery does the L marginal artery that supplies the L ventricle arise from

A

Circumflex

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8
Q

What arteries can posterior interventricular arise from

A

L or R coronary

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9
Q

Origin of posterior interventricular can be
A left dominant
B Right sim
C either

A

C

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10
Q

Why is it important clinically if someone has Right dominant circulation

A

Occlusion of the L main stem would impair blood flow to part of it but not entire L ventricle

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11
Q

Why is it important clinically if someone has Left dominant circulation

A

If an occlusions occurred on left main stem, entire left ventricle could be blocked off

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12
Q

What do the valves in the heart ensure

A

Unidirectional flow

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13
Q

Main internal features of R atrium

A

Interatrial septum
Fossa ovalis
Crista terminalis

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14
Q

What is the fossa ovalis in R atrium

A

Depression in the septum from foetal foramen ovals

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15
Q

What is the crista terminalis in R atrium

A

-Muscular ridge separating smooth walled posterior let of atrium from anterior parts which are ridged (pectinate muscles)

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16
Q

List main structure in Right ventricle

A

Interventricular septum
Trabeculae cernaea
Papillary muscles
Chordae tendineae
Moderator band

17
Q

In the R ventricle what is the trabeculae carnae

A

Muscular riddles in internal wall

18
Q

Describe the chordae tendinea in R ventricle

A

Fibrous Corte connecting tips of papillary muscles to tricuspid valve

19
Q

Describe the moderator band in the R ventricle

A

Modified region of trabeculaea caress which connects suptum to 1 of the papillary muscles

20
Q

Left atrium receives —— blood from lungs via pulmonic veins

A

Deox

21
Q

List the main structures of the left ventricle

A

Trabeculae carneae
Papillary muscles (2)
Chordae tendineae

22
Q

In left ventricle what does the Chordae tendineae do

A

Connect my papillary muscles to mitral valve’s

23
Q

When ventricles contact this is called ventricular______

A) Diastole
B) systole

A

B

24
Q

Which valves are the semi lunar

A

Aortic and pulmanory

25
Q

What is the asculatory region of the aortic valve

A

2nd intercostal space R of the sternum

26
Q

What is the ascultatory region for pulmanory valve

A

2nd intercostal space L of the sternum.

27
Q

What is the auscultatory region of tricuspid

A

5th intercostal space L of sternum

28
Q

What is the auscultatory area for mitral

A

5th intercostal L mid clavicular line

29
Q

The SA node is the____ of the heart

A

Pacemaker

30
Q

What structures does the cardinal conduction system include

A

SA node
AV node
AV bundle
Purkinje fibres

31
Q

Describe the conducting system of heart

A

-Action potential created by SAN

-Wave of excitation spreads across atria causing contraction

-impulses are conducted to AVN to the AVB

-AVB is split into 2 bundle branches giving rise to purkinje fibres in ventricles cause ventricles to contract

32
Q

A SA node supplied by R coronary artery is in approx __% of people

A

60

33
Q

A SA node supplied by L coronary artery is present in __% people

A

40

34
Q

In most people the ______ coronary arteries supplied AVB

A

Left

35
Q

In most people the AV node is supplied by _______ interventricular artery

A

Posterior

36
Q

_____ stimulation increase the hearts rate and force of contraction

A) parasympathetic
B)sympathetic

A

B

37
Q

_____ stimulation decreases the hearts rate and force of contraction

A) sympathetic
B) parasympathetic

A

B

ANATOMY (29 decks)

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