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Word Definition


Basilar artery occlusion
Basilar artery occlusion

Basal ganglia

Part of the base of the brain that is important for coordinating movement.
The basal ganglia is a part of your brain. 

It helps you move your body.

Basilar artery

One of the main arteries that supplies blood to the cerebellum, the brainstem, and the back of the brain. It joins with the right and left verterbral artery.
The basilar artery is an artery that supplies blood to your brain


Having to do with both sides of the body.
Bilateral means both sides of your body.

Blood clot

A blood clot is a jelly-like mass of blood tissue formed by coagulating factors in the blood. Clots that get into the bloodstream can block the flow of blood to the brain and cause a stroke.
A blood clot is a bit like a lump of jelly in your blood. 

It forms when the blood sticks together. 

Blood clots can block the flow of blood to your brain. 

This can cause a stroke.

Blood coagulation

Coagulation or clotting is the process by which blood changes from a liquid to a gel.
Coagulation is when the blood forms a clot. 

The blood changes to a jelly. 

This is to protect your body when you get a cut. 

The blood forms a clot to stop you bleeding. 

This is normally a healthy thing but the same process can sometimes cause a stroke.

Blood pressure

Blood pressure is the force of the blood against the walls of the arteries. It is measured by a ratio of two numbers: systolic – registered during a heartbeat and diastolic – registered between heartbeats. Less than 120/80 is optimal. 140/90 or higher is high blood pressure or hypertension.
Blood pressure is how hard the blood pushes against the walls of your arteries. 

It is measured with two numbers. 

The first number is during a heartbeat. 

The second number is between heartbeats. 

It is best to have blood pressure under 120/80. 

If your blood pressure is over 140/90, you have high blood pressure. 

High blood pressure is also called hypertension.


Body mass index
Body mass index

Body mass index

BMI is short for body mass index, a numerical value of weight relative to height. BMIs are good indicators of healthy or unhealthy weights for adults, regardless of body frame size. A BMI of less than 25 indicates a healthy weight. A BMI over 25 is considered overweight, while a BMI of 30 or higher indicates obesity. People with a BMI in the overweight or obese range are at increased risk for stroke.
Body mass index is a way of telling if your weight is healthy. 

It measures your weight and your height. 

Body mass index is also called BMI. 

A BMI under 25 is healthy. 

A BMI over 25 is overweight. 

A BMI over 30 is very overweight. 

You have more chance of have a stroke if you are overweight or very overweight.


See Botulinum toxin.
See Botulinum toxin.

Botulinum toxin

Also known by brand names Botox and Dysport. A highly toxic protein, sometimes used in minute amounts as a muscle relaxant with stroke survivors who have painful spasticity or high tone in their muscles affecting their ability to walk and function.

Botulinum toxin is a type of medicine. 

It relaxes your muscles. 

Sometimes a stroke causes problems with your muscles. 

You might have painful and tight muscles. 

This can make it hard to walk or move. 

A small amount of botulinum toxin can help relax the muscles. 

It is also called Botox or Dysport.


Blood pressure
Blood pressure


Slow, irregular heart beat.
Bradyarrhythmias is a type of problem with your heart. 

It is a slow, irregular heartbeat.


Slow heartbeat.
Bradycardia is type of problem with your heart. 

It is a slow heartbeat.

Brain attack

Another term for a stroke.
Brain attack is another name for a stroke.

Brain haemorrhage

Also known as a haemorrhagic stroke. A brain haemorrhage occurs when a blood vessel or an aneurysm bursts in the brain, causing bleeding inside the brain.
Brain haemorrhage is a type of stroke. 

It happens when a blood vessel bursts in your brain. 

This causes bleeding in your brain. 

It is also called a haemorrhagic stroke.


The brain structure that is the major communication route among the brain, spinal cord, and peripheral nerves. It controls heart rate, breathing, and other vital functions.
The brainstem is a part of your brain. 

It connects your brain, spinal cord and nerves. 

It controls your heartbeat, breathing and other vital functions.