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Cardio anatomy > Development Of Ventricles > Flashcards

Development Of Ventricles Flashcards

1
Q

The ventricles develop from ———and ———-of tubular heart.

A
  • primordial ventricle

- bulbus cordis

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2
Q

Primorddial ventricle is divided into left and right ventricles by the development of——-

A

interventricular septum.

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3
Q

Bulbus cordis is divided to two parts?

by?

A

infundibulum (Conus arteriosus)

aortic vestibule

bulbar septum.

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4
Q

primordial ventricle Contributes to left & right ventricle

proper (——-part of the ventricles)

A

rough

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5
Q

Bulbous cord is Contributes to the—— Part of left & right ventricles

A

smooth

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6
Q

The interventricular septum develops from

A

primordial interventricle

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7
Q

primordial interventricle, a crescentic muscular ridge from the floor of the———-, which grows towards——-

A

primordial ventricle

fused endocardial cushion

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8
Q

Growth of the primordial interventricular septum is due to?

A

enlargement of ventricular cavity

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9
Q

The primordial interventricular septum fails to reach the fused endocarddial cushion, leaving a———-between —————through which blood is——-

A

crescentic gap

them-interventricualr foramen,

shunted to left ventricle from right ventricle.

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10
Q

bulbus cordis gets divided into two parts with the development of left and right————- within it and absorbed into———

A

bulbar ridges

definitive ventricle

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11
Q

In the right ventricle the bulbus cordis is represented in the form of

A

conus arteriosus (Infundibulum)

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12
Q

in the left ventricle bulbus cordis is represented in the form of

A

as aortic vestibule.

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13
Q

The bulbar ridges fuse with
1)
2)
and contribute for the development of——-

A

1) each other and also with
2) fused endocardial cushion

membranous part of interventricular septum

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14
Q

The membranous part of the interventricular septum develops from

A

left and right bulbar ridges and down turned part of fused endocardial cushion.

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15
Q

This part of the interventricular septum will close the

A

interventricular foramen.

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16
Q

The ascending aorta and pulmonary trunk develop from

A

trucus arterious

17
Q

trucus arterious

A

Single duct-like structure that divides into truncal ridges

18
Q

A truncal ridge, which is arranged ——develop within truncus arteriosus and divides it into

A

spirally

ascending aorta and pulmonary trunk

19
Q

In fetal circulation there are three bypasses

1-1. Blood from umbilical vein enters——-, through——, without passing through

A

inferior vena cava(IVC)

ductus venosus

liver.

20
Q

2.Blood from IVC enters ———-through ——bypassing pulmonary circulation.

A

left atrium

foramen ovale

21
Q

3.Blood from pulmonary trunk enters the

—-through———, bypassing the pulmonary circulation

A

aorta

ductus arteriosus

22
Q

Three bypass in fetal circulation are closed at birth

1.Umbilical vein and ductus venosus obliterate so that all the blood coming through ——will———

A

portal vein

pass through liver.

23
Q
  1. Foramen ovale will be closed so the blood from IVC enters——-,——- and then flows through pulmonary trunk for pulmonary circulation.
A

right atrium, right ventricle

24
Q

3.Ductus arteriosus obliterates(closed) and forms———-, which prevents ——-and facilitates——-

A

ligamentum arteriosum

mixing of oxygenated and deoxygenated blood and facilitates pulmonary circulation.

25
Q

Changes in circulation at birth

1-The umbilical veins constrict and form the

A

ligamentum teres

26
Q

Changes in circulation at birth

2-Valve at the beginning ductus venosus constricts so that

A

all blood will pass through liver

27
Q

Changes in circulation at birth

3-Ductus arteriosus will obliterate preventing the blood flowing from

A

pulmonary trunk to aorta.

28
Q

Changes in circulation at birth

4-Increased blood return to—— through——

A

left atrium

pulmonary veins

29
Q

5-Foramen ovale will be closed as——— due to increase blood return from lungs

A

the pressure in left ventricle increased

30
Q

Congenital anomalies of the heart

  1. Ventricular septal defects(VSDs)
A

a. Membranous VSD
b. Muscular VSD
c. Single ventricle or common ventricle

31
Q

Membranous VSD

A

Incomplete closure of interventricular foramen (due to developmental failure of formation of membranous part of the interventricular septum) result in membranus VSD.

32
Q

Muscular VSD

Less common type of defect

A

occur due to excessive cavitation of myocardial tissue during development of the ventricular walls and muscular part of the interventricular septum.

33
Q

Single ventricle or common ventricle:

A

Developmental failure of interventricular septum formation will results in heart with three chambers (cor triloculare biatrium). Aorta and pulmonary trunk arise from single ventricle, great arteries will be transposed in their positio

34
Q

Congenital anomalies of the heart

  1. Developmental defects in great arteries (Pulmonary trunk and Aorta):
A

a. Persistent truncus arteriosus
b. Aorticopulmonary septal defect
c. Transposition of great arteries
d. Pulmonary Atresia
e. Aortic stenonsis and Atresia

35
Q

Persistent truncus arteriosus

A

results from failure of normal division of truncus arteriosus into aorta and pulmonary trunk. A VSD is always associated with this defect, and truncus arteriosus overrides VSD.

36
Q

Aorticopulmonary septal defect:

A

there will be an opening (Aortic Window), between aorta and pulmonary trunk near the arotic valve. This results from localized defect in the formation of aorticopulmonary septum.

37
Q

Transposition of great arteries and patent ductus arteriosus

This is the most common cause of—— in newborn infants

A

cyanotic heart disease

38
Q

Transposition of great arteries and patent ductus arteriosus

A

?

Cardio anatomy (5 decks)

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