Lecture 15: Embryonic Development of the Cardiovascular System Flashcards

1
Q

During the early stages of development the embryo is nourished through

A

Diffusion from the fluid secreted by the uterine glands into the uterine cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Why is there an urgent need for a circulatory system in a developing embryo?

A

Increase in size and complexity means that diffusion system becomes insufficient.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Cardiovascular system is derived from

A

Angioblastic tissue, which arises from the mesenchyme, an aggregation of cells from the mesoderm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Process of blood vessel development

A

angiogenesis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the first functional system of the embryo?

A

Cardiovascular system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Cardiogenic field

A

Horse-shoe shaped structure located around the anterior and lateral portions of the neural plate. Area of blood-forming cavities in the visceral mesoderm where hemangioblasts will eventually coalesce and form the primitive heart, blood vessels, and blood cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Cardiogenic cords form

A

endocardial heart tubes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The caudal portions of the endocardial heart tubes make contact with

A

The developing venous system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The endocardial heart tubes will give rise to

A

The heart and dorsal and ventral aortas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The endocardial heart tube is first composed of only ____ cells. Then…

A
  • Endothelial

- The caudal portion fuses and becomes surrounded by myoblasts to form the myocardium (formation of the cardiac tube)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Bulbus cordis is the precursor of the

A

right ventricle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Loop formation

A

The process that in conjunction with the partition of the primordial heart, will result in the formation of the blood pumping organ that is necessary for the survival of the neonate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

During the partitioning of the atrio-ventricular canal

A
  • Primitive atrium is divided into left and right atrium
  • Primitive ventrical divided into left and right ventricles
  • Truncus arteriosus is divided into outflow tracts of the aorta and pulmonary trunks
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the most common congenital anomaly in domestic animals

A

Patent ductus arteriosus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Persistent right aortic arch leads to

A

megaesophagus

Affected animals often die of aspiration pnuemonia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly