Scientifically, our brain can make smells visible 1

Quiz: The human brain

What is the speed of the electrical stimuli that are sent back and forth in our brain? What helps the thinking organ to stay fit? And what are synapses? Test your knowledge!

The answers to the questions can be found below.

Question 1 of 15
What do you call the innumerable nerve cells that are present in the human brain?

a) neutrons

b) neurons

c) electrons

Question 2 of 15
How many neurons are there in the human brain?

a) Around a million nerve cells

b) Around 100 million nerve cells

c) Around 100 billion nerve cells

Question 3 of 15
And what speed do the electrical stimuli that are exchanged by the neurons reach?

a) Up to 180 kilometers per hour

b) Up to 360 kilometers per hour

c) Up to 520 kilometers per hour

Question 4 of 15
The synapses ...

a) are the connection points between two nerve cells.

b) As hormone glands in the brain, they produce vital messenger substances, so-called hormones.

c) are electrical signals that are sent back and forth in the brain.

Question 5 of 15
The brain is constantly on the move. How many brain connections are rebuilt every second - that is, linked or destroyed?

a) 1000

b) 100,000

c) One million

Question 6 of 15
What do you call the three most important regions of the human brain?

a) cerebrum, limbic system, cerebellum

b) cerebrum, nervous system, cerebellum

c) Frontal lobes, nervous system, cerebrum

Question 7 of 15
Do you also know which part of the brain controls whether we are afraid?

a) Amygdalae, the almond kernels

b) prefrontal cortex, part of the frontal lobe of the cerebral cortex

c) basal ganglia

Question 8 of 15
Which gland is not in the brain?

a) thyroid gland

b) Pituitary gland

c) pineal gland

Question 9 of 15
Which assumption of the old physician Franz Joseph Gall (1758-1828) has proven to be correct?

a) In some people, an enlarged memory center presses against the eyes, creating bulging eyes

b) There are different areas in the brain that are responsible for different tasks

c) A bulge above the right eye indicates a good sense of direction

Question 10 of 15
Which device can be used to map the brain well?

a) With electronic sensors on the scalp

b) With a magnetic resonance tomograph

c) With a special camera

Question 11 of 15
What is the name of the modern science of the human brain?

a) phrenology

b) neurology

c) Phlebology

Question 12 of 15
Great apes are among the most intelligent animals. How big is your brain compared to the human brain?

a) About a quarter

b) About half

c) About the same size

Question 13 of 15
In which "discipline" do crocodile brains do particularly well?

a) They are particularly good at processing taste stimuli

b) You can process odor stimuli particularly well

c) You can process visual stimuli particularly well

Question 14 of 15
For example, what helps our thinking apparatus to stay fit?

a) Sports

b) making music

c) Both

Question 15 of 15
Bonus question: do you know how heavy is the human brain?

a) Between four and five kilograms

b) Between three and four kilograms

c) Between one and two kilograms

Attention resolution!

Here are the answers to the review:

Question 1 of 15
What do you call the innumerable nerve cells that are present in the human brain?

a) Neutrons ❌

b) Neurons ✔️

c) electrons ❌

One thing is clear: the neurons are specialized cells in the brain that transmit messages via electrical stimuli. But: there are neurons not only in the brain, but in the whole body. They make up the nervous system. In the brain, the countless nerve cells are linked by long lines through which they send messages such as "Hunger!" or "Pain in the little toe!" send.

Question 2 of 15
How many neurons are there in the human brain?

a) Around one million nerve cells ❌

b) Around 100 million nerve cells ❌

c) Around 100 billion nerve cells ✔️

It is estimated that there are around 100 billion tiny nerve cells wired together in our brain - an incredibly large number. (For comparison: around seven billion people currently live on earth). This network of nerve cells is responsible for our brain performance. But: It is not the mass that matters, but how well the nerve cells are connected to one another.

Question 3 of 15
And what speed do the electrical stimuli that are exchanged by the neurons reach?

a) Up to 180 kilometers per hour ❌

b) Up to 360 kilometers per hour ✔️

c) Up to 520 kilometers per hour ❌

With up to an unbelievable 360 ​​kilometers per hour, electrical stimuli can race from neuron to neuron in our brain - they reach the speed of a Formula 1 driver!

Question 4 of 15
The synapses ...

a) are the connection points between two nerve cells. ✔️

b) As hormone glands in the brain they produce vital messenger substances, so-called hormones. ❌

c) are electrical signals that are sent back and forth in the brain. ❌

The billions of nerve cells in the brain, the neurons, are connected to one another via long lines, the axons, through which the electrical signals are sent - the connection points between the lines are called synapses. A synapse is the contact point between two nerve cells or a nerve cell and another cell.

Question 5 of 15
The brain is constantly on the move. How many brain connections are rebuilt every second - that is, linked or destroyed?

a) 1000 ❌

b) 100,000 ❌

c) One million ✔️

Our thinking apparatus really never stops: Every second, influenced by external stimuli, thoughts, feelings, around a million brain connections are rebuilt: New lines between neurons are made, others are cut. This conversion work begins even before the birth, and for children and adolescents the networks are constantly being rebuilt at lightning speed. Because of this, children learn more easily than older people.

Question 6 of 15
What do you call the three most important regions of the human brain?

a) cerebrum, limbic system, cerebellum ✔️

b) cerebrum, nervous system, cerebellum ❌

c) frontal lobes, nervous system, cerebrum ❌

The most important regions of our brain are the cerebrum, the limbic system and the cerebellum. The cerebrum consists of two halves. The left and right hemispheres of the brain each have different tasks and are connected to one another by a thick nerve cord. Our intelligence, our consciousness and our sensory processing are located in the cerebrum. The second largest part of our brain is the cerebellum: It is responsible for our coordination, our balance and the learning of movement sequences. The limbic system filters out important information and passes it on to our consciousness and memory. Emotions are also processed here and our internal clock and urges such as hunger or thirst are controlled.

Question 7 of 15
Do you also know which part of the brain controls whether we are afraid?

a) Amygdalae, the almond kernels ✔️

b) prefrontal cortex, part of the frontal lobe of the cerebral cortex ❌

c) Basal ganglia ❌

The almond kernels, scientifically called the amygdalae, belong to the limbic system and control whether we feel fear in certain situations or not. So, in a sense, they are our warning system. Disorders of the amygdalae can lead to diseases such as depression or autism.

Question 8 of 15
Which gland is not in the brain?

a) Thyroid ✔️

b) Pituitary ❌

c) pineal gland ❌

The thyroid is not located in the brain, but on the neck in front of the windpipe. A control loop between the brain and thyroid ensures that sufficient messenger substances (hormones) are formed for growth, development and other bodily functions. The pituitary gland, also known as the pituitary gland, also plays an important role in the body's hormonal balance. The hormone melatonin is produced in the pineal gland: It regulates our internal clock, i.e. our day-night rhythm.

Question 9 of 15
Which assumption of the old physician Franz Joseph Gall (1758-1828) has proven to be correct?

a) In some people, an enlarged memory center presses against the eyes, creating bulging eyes ❌

b) There are different areas in the brain that are responsible for different tasks ✔️

c) A bulge above the right eye indicates a good sense of direction ❌

All nonsense with sauce, except: Certain areas in the brain specialize in very specific tasks. Our vision center is, for example, at the back of the head and what we hear is processed by nerve cells in the so-called temporal lobes near the ears. The memory center, on the other hand, is pretty much in the center of the head and what you like is also processed there nearby. But: Not all tasks are "location-bound": Most of the work is done by the neural networks that connect different areas of the brain with one another.

Question 10 of 15
Which device can be used to map the brain well?

a) With electronic sensors on the scalp ❌

b) With a magnetic resonance tomograph ✔️

c) With a special camera ❌