What is the weight of an average human brain?
About 3 pounds (1.4 kilograms)
True or false: The brain is fully developed at age 18.
FALSE
The brain continues to develop into the mid-20s.
Fill in the blank: The cerebrum is responsible for _______ and thinking.
memory
What is the largest part of the human brain?
The cerebrum
Define neuron.
A nerve cell that transmits signals in the brain and body.
True or false: The brain can generate new neurons throughout life.
TRUE
This process is called neurogenesis.
What percentage of the body’s energy does the brain use?
About 20%
Fill in the blank: The hypothalamus regulates _______ and temperature.
hunger
What is the function of the brainstem?
It controls basic life functions like breathing and heart rate.
True or false: The brain can feel pain.
FALSE
The brain lacks pain receptors.
What is the corpus callosum?
A bundle of nerve fibers connecting the two brain hemispheres.
Fill in the blank: The amygdala is involved in _______ processing.
emotional
What is plasticity in the brain?
The brain’s ability to adapt and reorganize itself.
True or false: The brain has a limited number of connections.
FALSE
The brain can form trillions of connections.
What is the function of the cerebellum?
It coordinates movement and balance.
Fill in the blank: The frontal lobe is responsible for _______ control.
impulse
What is the role of the occipital lobe?
It processes visual information.
True or false: The brain operates on electrical signals.
TRUE
Neurons communicate through electrical impulses.
What is myelin?
A fatty substance that insulates nerve fibers.
Fill in the blank: The temporal lobe is associated with _______ processing.
auditory
What is the blood-brain barrier?
A protective barrier that regulates substances entering the brain.
True or false: The brain can regenerate after injury.
PARTIALLY TRUE
Some functions can recover, but not all injuries heal completely.
What is the function of the thalamus?
It relays sensory information to the cerebral cortex.
Fill in the blank: The hippocampus is crucial for _______ formation.
memory
