Human Brain and Spinal Cord

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Questions and Answers

What is the main function of the brain?

To control our thoughts, movements, emotions, and desires

What is the protective layer that covers the brain and spinal cord?

Meninges

What is the spinal cord responsible for?

Supporting the brain's functions

What is the outermost layer of the central nervous system?

Meninges Signup and view all the answers

What is the main organ of the nervous system?

Brain Signup and view all the answers

Which part of the brain controls thinking, speaking, and memory?

Cerebrum Signup and view all the answers

How many nerves are in the brain?

More than 10 billion Signup and view all the answers

What is the largest part of the brain?

Cerebrum Signup and view all the answers

What does the cerebrum control besides thinking and speaking?

Movement and memory Signup and view all the answers

What is the function of the cerebrum regarding sense organs?

To identify information Signup and view all the answers

What is controlled by the system being described?

Breathing, heart rate, and body temperature Signup and view all the answers

What is one of the functions of the system being described?

Release of some hormones Signup and view all the answers

What is another function of the system being described?

Control of body temperature Signup and view all the answers

What is one of the physiological processes controlled by the system being described?

Heart rate Signup and view all the answers

What is an involuntary function controlled by the system being described?

Breathing Signup and view all the answers

What is the spinal cord part of?

Nervous system Signup and view all the answers

What does the spinal cord connect?

The brain to the rest of the nervous system Signup and view all the answers

What is located below the pons?

The medulla oblongata Signup and view all the answers

What is the correct order of brain structures?

Midbrain, pons, medulla oblongata Signup and view all the answers

What is the function of the spinal cord?

To connect the brain to the rest of the nervous system Signup and view all the answers

What is the main function of the neurons in the nervous system?

To conduct impulses Signup and view all the answers

What is the estimated number of neurons in the brain?

100 billion Signup and view all the answers

What is the role of sensory neurons?

To carry impulses from inside and outside the body to the brain and spinal cord Signup and view all the answers

What is the main component of the nervous system?

Neurons Signup and view all the answers

What is the function of the dendrites in a neuron?

To receive impulses from other neurons Signup and view all the answers

What is the term for the long, thin extension of a neuron?

Axon Signup and view all the answers

Study Notes

Nervous System Protection

The nervous system, including the brain and spinal cord, is protected by a three-layered membrane called the meninges.

Brain Functions

The brain controls various bodily functions, including thoughts, movements, emotions, desires, breathing, heart rate, hormone release, and body temperature.
It plays a central role in controlling most bodily functions, including consciousness, movements, sensations, thoughts, and memory.

Neurons

Neurons are the basic units of structure and function in the nervous system, conducting impulses through the body.
A neuron consists of dendrites, a cell body, and an axon.
The brain is estimated to contain around 100 billion neurons.

Types of Neurons

There are three types of neurons: sensory neurons, motor neurons, and interneurons.
Sensory neurons carry impulses from inside and outside the body to the brain and spinal cord.

Brain Structure

The brain consists of more than 10 billion nerves.
The cerebrum is the largest part of the brain, controlling thinking, speaking, memory, movements, and identifying information gathered by sense organs.
The brainstem, consisting of the midbrain, pons, and medulla oblongata, connects the cerebrum to the spinal cord.

Spinal Cord

The spinal cord connects the brain to the rest of the nervous system.
It is a part of the central nervous system, playing a crucial role in transmitting information between the brain and the rest of the body.

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