How many chambers does the heart have ?

• 1

• 2

• 3

• 4

The top 2 chambers of the heart are called

• atria

• ventricles

• arteries

• aorta

Blood that is coming towards the heart travels in ...

• Trains

• Arteries

• Veins

• Buses

In the lungs , oxygen passes from ...

• the blood to the alveoli

• the alveoli to the blood

The heart is surrounded by several layers of tissue called

• pleural membrane

• peritoneal membrane

• pericardial membrane

The large muscular layer of the heart wall is called the

• viscera

• endocardium

• myocardium

The heartbeat arises in which structure in the heart ?

• sino atrial node

• atro ventricular node

• left ventricle

What does the sympathetic nervous system do to the heart rate ?

• decreases

• stabilises

• increases

What medical term is used to describe high blood pressure ?

• hypotension

• stroke volume

• hypertension

What is the name of the smallest blood vessels ?

• arteries

• capillaries

• veins

• tubes