Exercise 19: The Circulatory System Flashcards
It refers to the type of circulation where blood is transported via vessels.
closed circulation
Complete the sentence below:
In open circulation, blood is referred to as ____________.
hemolymph
It refers to the type of circulation where blood freely moves within the body cavity.
open circulation
Are invertebrates which possess an open circulation.
- arthropods
- mollusks
Are organisms with closed circulation.
- vertebrates
- annelids
- cephalopods
TRUE or FALSE:
Flatworms and sponges do not possess a circulatory system.
True
Complete the sentence below:
In flatworms and sponges, blood is transported between cells and tissues via body movements.
True
Complete the sentence below:
In an open circulatory system of a cockroach, a medially located membranous tube runs along the thorax which is called the _______________.
dorsal aorta
Complete the sentence below:
In an open circulatory system of a cockroach, the dorsal aorta continues into the abdomen as the ____________.
heart
It allows the inflow of hemolymph into the heart while its valves prevent backflow.
ostia
In an open circulatory system of a cockroach, it refers to the cavity where the heart is located.
pericardial sinus
In an open circulatory system of a cockroach, it refers to a membranous sheet which separates the pericardial sinus from the rest of the body.
dorsal diaphragm
Are the components of the circulatory system of vertebrates.
- blood
- heart
- arteries
- arterioles
- veins
- venules
- capillaries
It serves as the pump of the circulatory system, sending blood to the different body parts.
heart
Are blood vessels which return blood to the heart.
veins
Are blood vessels which transport blood away from the heart.
arteries
It is where gas exchange occur.
capillaries
Are found in between arterioles and in between venules.
capillaries
TRUE or FALSE:
Arteries possess thicker, muscular walls.
True
In the circulatory system of tetrapods:
It is where the heart is located.
pericardial cavity
In the circulatory system of tetrapods:
It is a membranous layer covering the heart.
visceral pericardium
In the circulatory system of tetrapods:
It refers to the lining of the pericardial cavity.
parietal pericardium (parietal sac)
TRUE or FALSE:
The visceral pericardium is continuous with the parietal pericardium.
True
In the circulatory system of tetrapods:
Identify the components of the heart.
- sinus venosus
- conus arteriosus
- left and right atria
- ventricle
In the circulatory system of tetrapods:
It is the most prominent part of the heart.
ventricle
In the circulatory system of tetrapods:
It receives all deoxygenated blood from the body, then deposits it into the right atrium.
sinus venosus
In the circulatory system of tetrapods:
It separates the atria into the left and right hemisphere.
interatrial septum
In the circulatory system of tetrapods:
It refers to the opening on the dorsal wall of the right atrium.
sinoatrial aperture
In the circulatory system of tetrapods:
It serves as the entrance of blood from the sinus venosus into the right atrium.
sinoatrial aperture
In the circulatory system of tetrapods:
It is where blood passes through from the atria to the ventricle.
left and right atrioventricular apertures
TRUE or FALSE:
The opening to the conus arteriosus is located at the anterior margin of the ventricle.
True
In the circulatory system of tetrapods:
Are valves guarding the opening of the conus arteriosus.
- spiral valve
- semilunar valve
Complete the sentence below:
The anterior end of the mammalian heart is known as the ____________ and the posterior end is called the ____________.
base, apex
In the mammalian circulatory system:
Are small blood vessels covering the heart.
coronary veins and arteries
In the mammalian circulatory system:
Are blood vessels which drains the cardiac muscles.
coronary veins
Circulatory System of Mammals:
Are blood vessels which supply the cardiac muscles.
coronary arteries
Complete the sentence below:
In mammals, the left ventricle is __________ muscular than the right ventricle.
more
In the mammalian circulatory system:
Are ridges on the walls of the ventricles.
trabeculae carnae
In the mammalian circulatory system:
It separates the ventricles into its left and right chambers.
interventricular septum
In the mammalian circulatory system:
It refers to the opening between the ventricle and atrium.
atrioventricular aperture
In the mammalian circulatory system:
It borders the left atrioventricular aperture.
bicuspid (mitral) valve
In the mammalian circulatory system:
It borders the right atrioventricular aperture.
tricuspid valve
In the mammalian circulatory system:
Are projections on the walls of the ventricles where valves are connected.
papillary muscles
In the mammalian circulatory system:
Are tough thread-like structures connecting the valves into the papillary muscles.
chordae tendinae