The Brain Quiz

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Which part of the brain is responsible for complex sensory perception, motor control, endocrine regulation, and the development of intelligence?

Spinal cord

Hindbrain

Midbrain

Forebrain (correct)

Where is the brain typically located in the body?

Chest

Head (correct)

Abdomen

Back

How many neurons are estimated to be in the cerebellum?

14-16 billion

55-70 billion (correct)

Less than 1 billion

More than 100 billion

Which part of the neuron sends signals to specific target cells over long distances?

Axons Signup and view all the answers

Which of the following is true about axons?

Axons transmit signals in the form of electrical pulses Signup and view all the answers

What are the two broad classes of cells that make up the brain?

Neurons and glia cells Signup and view all the answers

What is the speed at which action potentials travel along an axon?

100-1000 meters per second Signup and view all the answers

What is the function of glial cells in the brain?

Structural support and insulation Signup and view all the answers

How do axons transmit signals to other neurons?

Through specialized junctions called synapses Signup and view all the answers

What is the role of the prefrontal cortex in the brain?

Controlling executive functions Signup and view all the answers

What is the primary mechanism for learning and memory in the brain?

Activity-dependent modification of synapses Signup and view all the answers

Which part of the brain is responsible for the development of intelligence?

Forebrain Signup and view all the answers

What is the estimated number of neurons in the cerebral cortex?

14-16 billion Signup and view all the answers

Which part of the brain is considered a caudal extension of the myelencephalon?

Spinal cord Signup and view all the answers

Which of the following is true about synapses?

Synapses are the points at which cell-to-cell communication occurs in the brain. Signup and view all the answers

What is the primary function of the brain?

To facilitate cell-to-cell communication. Signup and view all the answers

What is the function of myelin in the brain?

To increase the speed of signal propagation along axons. Signup and view all the answers

What is the approximate number of synapses in the human brain?

100 trillion synapses. Signup and view all the answers

Which of the following is true about dendrites?

Dendrites are root-like protrusions that connect neurons to other neurons Signup and view all the answers

What is the function of the prefrontal cortex in the brain?

The prefrontal cortex controls executive functions Signup and view all the answers

What is the primary role of glial cells in the brain?

Glial cells provide structural support, metabolic support, insulation, and guidance of development Signup and view all the answers

How do neurons send signals to specific target cells over long distances?

Neurons send signals through thin protoplasmic fibers called axons Signup and view all the answers