Cardiovascular System Flashcards
In closed circulatory system where does blood stays?
Blood vessels
Blood is separated from?
body tissues
This system has a heart that pumps blood through a
continuous circulation pattern.
Closed circulatory system
Two parts of the circulatory system of frogs
cardiovascular system and
lymphatic system
The main function of this system is to supply oxygen and nutrients to the tissues and to aid in the elimination of metabolic wastes
cardiovascular system
The main function of this system is drain the remaining plasma to the heart
lymphatic system
how many chambers does the heart of the frog has?
three
situated mid-ventrally in the anterior part of the body cavity in between two lungs
Heart
Describe the heart
dark red colored conical muscular organ
how is the heart situated?
mid-ventrally
Two membranes of the heart
inner epicardium and outer pericardium
What do you call the space between two membranes enclosing the heart.
Pericardial cavity
What fills the Pericardial cavity?
Pericardial fluid
Functions of pericardial cavity
- Protects the heart from mechanical injury
- Keeps the heart moist
- Allows the free movement during beating
- Also keeps in keeping the heart suspended in its proper position
Structure of the frog’s heart
triangular
Anterior broader part of the frog’s heart
Auricles
What separates the auricles?
Interauricular groove / septum
How many chambers does auricle has?
two chambers
posterior pointed part of the frog’s heart
ventricle
number of chambers of the ventricle
one
how is ventricle separated from auricle?
coronary sulcus
What is the most important part of the heart?
Ventricle
Describe the ventricle
thick muscular walls
What are the two additional chambers of the frog’s heart?
sinus venosus and truncus arteriosus
a tubular structure arise from the right side of the ventricle
truncus arteriosus
On the dorsal surface of the heart, what will fuse to form wide chamber
Two precaval and a postcaval
thin walled dark colored triangular structure which opens into the right auricle
Sinus venosus
receives deoxygenated blood from all parts of the body
Sinus venosus
How many branches does truncus arteriosus divides to have two branches to form aortic trunks
Two
Aortic trunk is consists of?
carotid arch
systemic arch
pulmonary arch
What consists the blood vessels
veins, arteries and capillaries
These are System of pipelines through which blood flow
Blood vessels
Blood vessels has three layers which are?
– tunica externa
– tunica media
– tunica intern