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Cardiovascular Physiology > Intrinsic Conducting System > Flashcards

Intrinsic Conducting System Flashcards

1
Q

where is the SA node located and its function

A

right artial wall-primary pace-maker of the heart

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2
Q

AV node location and function

A

above tricuspid valve-delays de-polarisation to allow for atria to complete their contraction
Maximal ventricular filling

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3
Q

PWave Electrical and Mecahnical Events

A

E:Arital deporlastion
M:artial contraction

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4
Q

QRS Complex E event and M event

A

E: Ventricular Deporalisation
M: Ventricualr Contration

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5
Q

T wave Electrical event, Mechanical event

A

Ventricular repolastion
Ventricular Relaxation

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6
Q

Where are b1 adrenergic receptors found

A

SA node, conducting system
Myocardium

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7
Q

What is the Parasympathetic supply to the heart

A

M2-Muscarninc

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8
Q

Most Visercal Pain travel in?

A

viseral affernt fibres that accompany sympathetic fibres

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9
Q

Most unconscious senstation-

A

Parasympathetic fibres

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10
Q

Rt Ventricle-which circuit

A

Deoxynated-Pulmonary Circuit

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11
Q

Lt Ventricle-Systemic Circuit

A

Oxyngated-Systemic

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12
Q

Systole?

A

period of contraction

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13
Q

Diastole?

A

Period of Relaxation

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14
Q

Mid-to-Late Ventriuclar Diastole?

A

Ventricular fills
Artia contracts

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15
Q

Ventricular Systole?

A

Isovolumteric Contraction
Ventricular Ejection Phase

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16
Q

Early ventricular Diastole?

A

Isovolumetric Relaxtion

17
Q

S1= LUB

A

closure of AV at start of Vent. Systole

18
Q

s2= DUB

A

close of Sl vale and vent diastole

19
Q

Determinants of HR

A

Nerual-Chemiacal-Physical

20
Q

Determinants of SV

A
  • Pre-Load-cardiac mm are stretched before they contract(amount of venous return)
  • Contractility- Intrinsic strength of contraction-Sympathtic Stim-Chemical Factors
  • Afterload-Hypertension-afterload in systemic
  • Pilmonary hypertnetion-pulmoanry circuit
21
Q
A

Cardiovascular Physiology (6 decks)

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