The human nervous system: parts and main functions (2024)

At the Instituto Clavel, as experts in neurosurgery, we would like you to understand one of the fundamental parts of your body: the nervous system, which consists of the set of structures that manage the proper functioning of the body.

The human nervous system is made up of three basic parts: the central nervous system, the peripheral nervous system, and the autonomic nervous system. Without a doubt, it is the most complex part of the human body, a masterpiece of nature.

As we will see in detail below, most of the main functions of our body, if not all, depend on the nervous system. From breathing or the ability to move in a coordinated way to talking or feeling hungry.

1. Central Nervous System (CNS)

The central nervous system is made up of the encephalon (which includes the brain, the thalamic structures, brainstem, and cerebellum), and the spinal cord.

  • The brain is one of the most important parts of our body, the organ on which everything depends to work perfectly. The neurons responsible for the execution of different functions such as: mobility, sensitivity, speech, vision, etc. are located in the cerebral cortex. The subcortical structures are also located in this area, although at a greater depth, where the nuclei of neurons that are in charge of more complex functions such as the coordination of movements are located.
  • The thalamus, subthalamus and hypothalamus are in charge of connecting the thalamic information of the brain with the rest of the brain structures and vice versa. Their functions are more complex and are more related to sense and touch. They are responsible, for example, for creating the feeling of hunger.
  • The cerebellum, on the other hand, is interconnected with the thalamus and the subcortical nuclei. Its job is related to the coordination of movement.
  • The brain stem is another of the CNS structures and is responsible for theconnection between the brain and spinal cord. It is here that we find the nuclei of neurons responsible for vital functions such as breathing, heart rate or consciousness.
  • The spinal cord is outside the skull, inside the spinal canal, and is made up of nerves and a neural structure that receives the information from the brain. You can think of it as a high-speed fiber optic system that carries the signals from the brain. It works in the other direction as well, receiving signals from all points of the body and sending them back to the brain.

2. Peripheral Nervous System (PNS)

The peripheral nervous system is made up of the cranial nerves that are housed in the brain stem, the nerve roots of the spinal cord, and the peripheral nerves that extend from the cord. It is like a wiring system that runs through our spine and extremities and can be classified into three types of nerve fibers: motor, sensory and pain transmitting.

3. Autonomic Nervous System (ANS)

The ANS consists of a chain of ganglia located on both sides of the spinal cord, extending from the cervical segment to the coccyx. Its main function is to control all the internal organs (heart, intestines...) and make them adapt to the needs of the body at all times.

Tips on caring for your nervous system

As you have seen, a large part of the vital functions of the human beings depends on the nervous system, so it is an essential structure to take care of. Although it is not possible to prevent all the diseases that can affect this system, leading a healthier lifestyle is always positive and will allow us to feel much better.

The following are some habits that we can adopt to take care of the nervous system every day:

  • Eat a healthy diet.
  • Exercise regularly.
  • Avoid tobacco, alcohol, and other drugs.
  • Reduce stress as much as possible.
  • Get enough sleep.
  • Get regular medical check-ups.

Of course, apart from these recommendations, if you notice a problem that affects any of these regions or their functions, it is important that you go to the doctor as soon as possible to determine the cause and get treatment.

At Instituto Clavel we are experts in neurosurgery and we work with the most advanced treatments and the most cutting-edge technology to carry out these types of operations in the safest way possible. If you have any questions or need personalized advice, contact us.

Categories: Prevention, Wellness

The human nervous system: parts and main functions (2024)

FAQs

The human nervous system: parts and main functions? ›

The nervous system includes the brain, spinal cord, and a complex network of nerves. This system sends messages back and forth between the brain and the body. The brain is what controls all the body's functions. The spinal cord runs from the brain down through the back.

What are the main parts of the nervous system and their functions? ›

The central nervous system is the brain and spinal cord, while the peripheral nervous system consists of everything else. The central nervous system's responsibilities include receiving, processing, and responding to sensory information.

What are the 7 functions of the nervous system? ›

Central Nervous System – what does the brain and spinal cord do?
  • maintaining homeostasis.
  • interpreting sensory information.
  • creating motor responses (movement)
  • learning.
  • thinking.
  • talking.

What are the 7 organs of the nervous system? ›

The central nervous system (defined as the brain and spinal cord) is usually considered to have seven basic parts: the spinal cord, the medulla, the pons, the cerebellum, the midbrain, the diencephalon, and the cerebral hemispheres (Figure 1.10; see also Figure 1.8).

How many main functions of the nervous system are there? ›

The 4 main functions of the nervous system are: Reception of general sensory information (touch, pressure, temperature, pain, vibration) Receiving and perceiving special sensations (taste, smell, vision, sounds) Integration of sensory information from different parts of the body and processing them.

What are the basic functions of the nervous system quizlet? ›

What are the General Functions of the Nervous System? To maintain body homeostasis with electrical signals, provide for sensation, higher mental functioning, and emotion response, and activate muscles and glands.

What is the main function of the nerves? ›

Nerves send electrical signals that help you feel sensations and move your muscles. Nerves also control body functions like digesting food and maintaining your heart rate. Nerves are one of the foundational parts of your nervous system.

Which of these are the basic functions of the nervous system? ›

First, the basic functions of the nervous system are sensation, integration, and response. Secondly, control of the body can be somatic or autonomic—divisions that are largely defined by the structures that are involved in the response.

What are the parts and functions of the neuron? ›

Their function is to send electrical impulses and chemical signals to and from the brain. Most neurons have three parts, including a cell body, which contains the nucleus and the cytoplasm, an axon, which transmits information away from the nucleus, and dendrites, which receive messages from other neurons.

How to heal the nervous system? ›

Rebalancing your nervous system means getting back to a state where you feel calm and centered. You can try practicing deep breathing exercises, spending time in nature, or taking short breaks during the day. Regular sleep, a balanced diet, and talking to someone you trust can also help.

What are the 12 nervous system? ›

olfactory, optic, oculomotor, trochlear, trigeminal, abducens, facial, vestibulocochlear, glossopharyngeal, vagus, spinal accessory, hypoglossal.

What are the 3 most important parts of the nervous system? ›

The nervous system includes the brain, spinal cord, and a complex network of nerves.

What is the 11 nervous system? ›

The nervous system is the human organ system that coordinates all of the body's voluntary and involuntary actions by transmitting electrical signals to and from different parts of the body.

What part of the brain controls thinking? ›

The frontal lobe, located behind the forehead, does much of the work of complex thinking, like planning, imagining, making decisions, and reasoning.

What are the 12 cranial nerves and their function? ›

12 cranial nerves list
Cranial nerve 1Olfactory nerve (CN I) - sensory
Cranial nerve 2Optic nerve (CN II) - sensory
Cranial nerve 3Oculomotor nerve (CN III) - motor
Cranial nerve 4Trochlear nerve (CN IV) - motor
Cranial nerve 5Trigeminal nerve (CN V) - mixed
7 more rows

What are the parts of the neuron and their functions? ›

Most neurons have three parts, including a cell body, which contains the nucleus and the cytoplasm, an axon, which transmits information away from the nucleus, and dendrites, which receive messages from other neurons.

What is the structure and function of the nervous tissue? ›

What is a Nervous Tissue? Nervous or the nerve tissue is the main tissue of our nervous system. It monitors and regulates the functions of the body. Nervous tissue consists of two cells: nerve cells or neurons and glial cells, which helps transmit nerve impulses and also provides nutrients to neurons.

What are the overall functions of the nervous system and summarize the overall process used to accomplish these functions? ›

The nervous system takes in information through our senses, processes the information and triggers reactions, such as making your muscles move or causing you to feel pain. For example, if you touch a hot plate, you reflexively pull back your hand and your nerves simultaneously send pain signals to your brain.

Top Articles
Latest Posts
Article information

Author: Pres. Lawanda Wiegand

Last Updated:

Views: 6323

Rating: 4 / 5 (51 voted)

Reviews: 82% of readers found this page helpful

Author information

Name: Pres. Lawanda Wiegand

Birthday: 1993-01-10

Address: Suite 391 6963 Ullrich Shore, Bellefort, WI 01350-7893

Phone: +6806610432415

Job: Dynamic Manufacturing Assistant

Hobby: amateur radio, Taekwondo, Wood carving, Parkour, Skateboarding, Running, Rafting

Introduction: My name is Pres. Lawanda Wiegand, I am a inquisitive, helpful, glamorous, cheerful, open, clever, innocent person who loves writing and wants to share my knowledge and understanding with you.