# data[].attributes.attachment_link.description
In 47 episodes, Hank Green will teach you anatomy and physiology! This course is based on an introductory college-level curriculum.

# data[].attributes.attachment_link.readable_text
The most complex organ in the human body is comprised of many parts and systems. Take this 3D Brain quiz to see how many regions of the brain you're familiar with.

Which portion of the brain is responsible for processing scents?

Hypothalamus Olfactory bulb Cerebellum Pituitary gland

Information from which sense is routed through the thalamus?

The basal ganglia are located under the cerebral cortex and on top of the brainstem.

The ___ lobe houses brain structures responsible for storing memories and understanding language.

The cerebrum focuses on improving our motor skills by detecting errors in our movements and making slight adjustments to fine-tune future movements.

Which is the largest lobe of the cerebral cortex?

Frontal lobe Parietal lobe Temporal lobe Occipital lobe

About the Author

Cyrenna Cooper
Cyrenna Cooper is the Web Communications Specialist for BrainFacts.org. She graduated from George Mason University in 2017 with a degree in Communications.

# data[].attributes.attachment_link.description
The most complex organ in the human body is comprised of many parts and systems. Take this 3D Brain quiz to see how many regions of the brain you're familiar with.

# data[].attributes.attachment_link.readable_text
This interactive brain model is powered by the Wellcome Trust and developed by Matt Wimsatt and Jack Simpson; reviewed by John Morrison, Patrick Hof, and Edward Lein.
Structure descriptions were written by Levi Gadye and Alexis Wnuk and Jane Roskams.
Copyright © Society for Neuroscience (2017). Users may copy images and text, but must provide attribution to the Society for Neuroscience if an image and/or text is transmitted to another party, or if an image and/or text is used or cited in User's work.

# data[].attributes.attachment_link.description
This interactive brain model is powered by the Wellcome Trust and developed by Matt Wimsatt and Jack Simpson; reviewed by John Morrison, Patrick Hof, and Edward Lein. Structure descriptions were written by Levi Gadye and Alexis Wnuk and Jane Roskams. Copyright © Society for Neuroscience (2017).

# data[].attributes.attachment_link.title
How your digestive system works - Emma Bryce

# data[].attributes.attachment_link.title
The Heart and Circulatory System - How They Work

# data[].attributes.body
Sensory systems

# data[].attributes.body
For Monday 9/10/23

# data[].attributes.attachment_link.title
BBC - Science & Nature - Human Body and Mind - Interactive Body

# data[].attributes.attachment_link.description
An exploration of the human body and its functions

# data[].attributes.body
Detailed answers for the mock exam

# data[].attributes.body
U4 Practice Paper

# data[].attributes.attachment_link.title
Research the conditions of the nervous and endocrine systems

# data[].attributes.body
Symptoms, treatment and outcomes.
Video explaining how a stroke affects the brain

# data[].attributes.attachment_link.readable_text
A stroke is a serious life-threatening medical condition that happens when the blood supply to part of the brain is cut off.
Strokes are a medical emergency and urgent treatment is essential.

The sooner a person receives treatment for a stroke, the less damage is likely to happen.

If you suspect that you or someone else is having a stroke, phone 999 immediately and ask for an ambulance.

Symptoms of a stroke

The main symptoms of stroke can be remembered with the word FAST:

Face - the face may have dropped on 1 side, the person may not be able to smile, or their mouth or eye may have dropped.

Arms - the person with suspected stroke may not be able to lift both arms and keep them there because of weakness or numbness in 1 arm.

Speech - their speech may be slurred or garbled, or the person may not be able to talk at all despite appearing to be awake; they may also have problems understanding what you're saying to them.

Time - it's time to dial 999 immediately if you see any of these signs or symptoms.

Causes of a stroke

Like all organs, the brain needs the oxygen and nutrients provided by blood to function properly.

If the supply of blood is restricted or stopped, brain cells begin to die. This can lead to brain injury, disability and possibly death.

There are 2 main causes of strokes:

ischaemic - where the blood supply is stopped because of a blood clot, accounting for 85% of all cases

haemorrhagic - where a weakened blood vessel supplying the brain bursts

There's also a related condition called a transient ischaemic attack (TIA), where the blood supply to the brain is temporarily interrupted.

This causes what's known as a mini-stroke. It can last a few minutes or persist up to 24 hours.

TIAs should be treated urgently, as they're often a warning sign you're at risk of having a full stroke in the near future.

Get medical advice as soon as possible, even if your symptoms get better.

Certain conditions increase the risk of having a stroke, including:

Treating a stroke

Treatment depends on the type of stroke you have, including which part of the brain was affected and what caused it.

Strokes are usually treated with medicine. This includes medicines to prevent and dissolve blood clots, reduce blood pressure and reduce cholesterol levels.

In some cases, procedures may be required to remove blood clots. Surgery may also be needed to treat brain swelling and reduce the risk of further bleeding if this was the cause of your stroke.

Recovering from a stroke

People who survive a stroke are often left with long-term problems caused by injury to their brain.

Some people need a long period of rehabilitation before they can recover their former independence, while many never fully recover and need ongoing support after their stroke.

Local authorities should provide free reablement services for anyone assessed as needing them. These services help the person recovering from a stroke learn or relearn the skills they need to live at home independently.

Some people will continue to need some form of care or help with their daily activities.

For example, a care worker may come to the person's home to help with washing and dressing, or to provide companionship.

Read about:

If you're recovering from a stroke or caring for someone who is, you may find the social care and support guide useful.

It's written for people with care and support needs, as well as their carers and relatives.

Preventing a stroke

You can significantly reduce your risk of having a stroke if you:

If you have a condition that increases your risk of a stroke, it's important to manage it effectively. For example, taking medicine you've been prescribed to lower high blood pressure or cholesterol levels.

If you've had a stroke or TIA in the past, these measures are particularly important because your risk of having another stroke is greatly increased.

Stroke in children

Stroke does not just affect adults. Every year around 400 children in the UK have a stroke, according to the Stroke Association.
Read more about childhood stroke on the Stroke Association website

Social care and support guide

The social care and support guide explains your options and where you can get support if you:

need help with day-to-day living because of illness or disability

care for someone regularly because they're ill, elderly or disabled (including family members)

# data[].attributes.attachment_link.description
Read about strokes, a serious and life-threatening medical condition that occurs when the blood supply to part of the brain is cut off.

# data[].attributes.body
THE NERVOUS SYSTEM

# data[].attributes.attachment_link.title
OSTEOARTHRITIS  treatments in greater detail

# data[].attributes.body
Treatments & side effects

# data[].attributes.attachment_link.title
How do the muscles, brain, and bones move our arm?

# data[].attributes.attachment_caption
Digestive system questions on scientific terms. 21.09.22 lesson

# data[].attributes.attachment_caption
Gallstones. Symptoms, causes, treatments and case studies.

# data[].attributes.attachment_caption
What does IBS stand for? Symptoms, causes, treatments and case studies.