Circulation of Blood
Describe the blood vascular system of Herdmania.
How many chambers does the heart have?
Name the arteries that carry deoxygenated blood in humans.
Why are valves present in heart and veins?
The valve present between the left atrium and left ventricle is called
What is atherosclerosis?
There is frequent urination in winter than in summer. Why?
The heart and the blood vessels of the circulatory system is derived from the:
- both b and c
The right part of the human heart contains oxygenated blood or deoxygenated?
a. Increase the heart beat rate
b. Decrease the heart beat rate
c. Increase the strength of ventricular contraction
d. Decrease the speed of conduction of action potential
e. Increase cardiac output
f. Decrease cardiac output
- Atria , veins and ventricles
- Pacemaker, veins and arteries
- All of the above
- SA node. AV node and arteries
- Sino atrial node
- Atrioventricular septum
- Atrioventricular node
- Interventricular septum
- Tricuspid valve
- Coronary valve
- Bicuspid valve
- Semilunar valve
During each cardiac cycle two prominent sounds are produced which can be easily heard through ____.
Why is the interventricular septum located in the heart of birds and mammals? What are its functions?
Oxygenated blood occurs in
Aqueduct of sylvius connects:
Lateral ventricles to third ventricle
Fourth ventricle to third ventricle
The two lateral ventricles
None of these
Read the given process for circulation of blood carefully. Identify the incorrect parts of the process:
Deoxygenated blood is received by the left auricle from the lungs. From the left auricle, it enters the left ventricle which distributes blood to various tissues and organs of the body through the veins. The veins divide into capillaries in the body tissues and organs. The blood passes on the carbon dioxide and collects oxygen. This impure deoxygenated blood collected by the capillaries now flows into the arteries. Arteries carry the blood back to the heart and empty it into the right ventricle.
List the major functions of blood.
Veins do not require thick walls
as they do not have to work harder
they are required only occasionally
blood pressure declines while it gets to veins
blood pressures is immense
Which one from the pulmonary artery and pulmonary vein contains less oxyhemoglobin?
I. Pulmonary veins
II. Anterior vena cava
III. Pulmonary arteries
- II only
- I only
- III only
- I and II
- II and III
- Right auricle (deoxygenated blood) - lungs (oxygenated blood) – left auricle
- Left auricle (oxygenated blood) - lungs (deoxygenated blood) - left auricle
Causes of heart murmurs
- Opening of semi lunar valve
- Closing of semi lunar valve
- Onset of artibular systole
- Sudden closure of A.V valves.
Differentiate between the following:
Bicuspid and tricuspid valve
(blood, organ transplantation, stem cells, osteocytes, regenerative, pluripotency, adipose connective tissue, liver, embryonic)
_______ are specialised cells that give rise to all other types of cells present in the body of multicellular organisms by the property of ________. These cells are useful in ________ therapy to replaced dead cells in case of conditions like diabetes. The cells are also useful for _________ in case of failure of organs like kidney and liver.