Which is the correct sequence of  blood flow

(a)

Ventricle → atrium → vein → arteries

(b)

Atrium → ventricle → veins → arteries

(c)

Atrium → ventricle → arteries → vein

(d)

Ventricles → vein → atrium → arteries

A patient with blood group O was injured in an accident and has blood loss. Which group of blood should be used by doctor for transfusion?

(a)

O group

(b)

AB group

(c)

A and B group

(d)

All blood group

‘Heart to Heart’ is called

(a)

SA node

(b)

AV node

(c)

Purkinje fibres

(d)

Bundle of His

The _________are the largest of leucocytes.

(a)

neutrophil

(b)

monocyte

(c)

basophil

(d)

lymphocyte·

The life span of platelets is_________

(a)

3 weeks

(b)

1 month

(c)

2-3 days

(d)

40 days

_______is not a feature of veins.

(a)

Red in colour

(b)

Non-elastic walls

(c)

Lack internal valves

(d)

Blood flow with low pressure

Why is the colour of the blood red?

Name the heart valve associated with the major arteries leaving the ventricles.

Mention the artery which supplies blood to the heart muscle.

Differentiate between blood and lymph.

Why are people with AB blood group called as "Universal Recipients"?

Why is the Sinoatrial node called the pacemaker of heart?

Differentiate between systemic circulation and pulmonary circulation.

The complete events of cardiac cycle last for 0.8 sec. What is the timing for each event?

Write a note an ABO blood grouping.

List the difference between RBC and WBC.

How do plants absorb water? Explain.

Transpiration is a necessary evil in plants. Explain.