Circulation of Blood

Q.

Describe the blood vascular system of Herdmania.

Q.

How many chambers does the heart have?

Q.

Name the arteries that carry deoxygenated blood in humans.

Q.

Why are valves present in heart and veins?

Q.

The valve present between the left atrium and left ventricle is called

1. Bicuspid valve

2. Tricuspid valve

3. Semilunar valve

4. Atrial valve

Q.

What is atherosclerosis?

Q.

There is frequent urination in winter than in summer. Why?

Q. That differences between extracellular and intracellular fluids

Q.

The heart and the blood vessels of the circulatory system is derived from the:

1. ectoderm
2. mesoderm
3. endoderm
4. both b and c

Q.

The right part of the human heart contains oxygenated blood or deoxygenated?

Q. Neural signal through sympathetic component of autonomic nervous system (ANS) can

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

Q. Valves are present in:

1. Atria , veins and ventricles
2. Pacemaker, veins and arteries
3. All of the above
4. SA node. AV node and arteries

Q. "X" is a fibrous tissue which separates the heart into left and right side. Identify "X".

1. Sino atrial node
2. Atrioventricular septum
3. Atrioventricular node
4. Interventricular septum

Q. Valve that guards the right auriculoventricular aperture is:

1. Tricuspid valve
2. Coronary valve
3. Bicuspid valve
4. Semilunar valve

Q. 'XX’ is a part of respiratory system that contains C-shaped rings of hyaline cartilage. ‘XX’ is lined with ciliated, pseudostratified columnar epithelium. Identify ‘XX’.

1. Nasopharynx
2. Glottis
3. Larynx
4. Trachea

Q.

During each cardiac cycle two prominent sounds are produced which can be easily heard through ____.

1. electrocardiograph

2. stethoscope

3. sphygmomanometer

4. galvanometer

Q.

Why is the interventricular septum located in the heart of birds and mammals? What are its functions?

Q.

Oxygenated blood occurs in

1. Pulmonary arteries

2. Right ventricle

3. Right atrium

4. Pulmonary veins

Q.

Aqueduct of sylvius connects:

1. Lateral ventricles to third ventricle

2. Fourth ventricle to third ventricle

3. The two lateral ventricles

4. None of these

Q.

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.

Q.

List the major functions of blood.

Q.

Veins do not require thick walls

1. as they do not have to work harder

2. they are required only occasionally

3. blood pressure declines while it gets to veins

4. blood pressures is immense

Q.

Which one from the pulmonary artery and pulmonary vein contains less oxyhemoglobin?

Q. Deoxygenated blood is carried by
I. Pulmonary veins
II. Anterior vena cava
III. Pulmonary arteries

1. II only
2. I only
3. III only
4. I and II
5. II and III

Q. Blood enters the heart through the two atria and exits through the two ventricles.

1. Right auricle (deoxygenated blood) - lungs (oxygenated blood) – left auricle
2. Left auricle (oxygenated blood) - lungs (deoxygenated blood) - left auricle

Q. Explain blood circulation in human heart.

Q.

Causes of heart murmurs

Q. First heart sound occurs by

1. Opening of semi lunar valve
2. Closing of semi lunar valve
3. Onset of artibular systole
4. Sudden closure of A.V valves.

Q.

Differentiate between the following:

Bicuspid and tricuspid valve

Q. Choose the correct options from the bracket and complete the given paragraph.
(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.