Materi Sistem Saraf Manusia

Assalamualaikum warahmatullahi wabarakatuh. Meet again with the Heriana Ana channel. This time we will discuss biological material about the human brain system. Let's watch it. Intro

The nervous system is a complex network that regulates body functions by sending signals between the brain and the entire body so that the body can carry out daily activities. There are two types of nervous systems: there is a conscious nervous system and there is an unconscious or autonomous nervous system.

The conscious nervous system is divided into two more, there is a central nervous system and there is a lateral nervous system. For the central nervous system consists of the brain and also the spine.

And for the lateral syringe system consists of the cranial syringe and the spinal syringe. For the unconscious or autonomous syringe system, it is divided into the sympathetic syringe system and the parasympathetic syringe system. In this video we will discuss one by one, but first we will discuss the syringe cell.

Because every cell system is arranged by millions, even billions of cells in our body. Every single cell is known as a neuron. One neuron is described like this. These are the parts of the neuron. There are dendrites, there are body cells, nucleuses, axons,

Myelin Cells 1 Ranvier Nodes And also Synapses Let's learn one by one Starting from Dendrites Dendrites are shaped like tree branches Dendrites function to receive impulses or stimuli from other cells and sent to the body of the cell Next there is the body of the cell The body of the cell maintains the cell's seraph Produces neurotransmitters

and controls neuron activity as well as continue the process to the axon. Next is the nucleus. The nucleus or cell core functions as the regulator of the activity of the nerve cells or neurons. Next is the axon. The axon functions to continue the impulse from the body of the cell to another cell. Next is the swan cell.

Cells 1 function to form the myelin cell and help regenerate the sperm. Then the myelin cell. The myelin cell is a substance of yellowish white fat, protects the axon, provides nutrition to the axon, and

And this myelin cell is formed by the cell swan. Next, there is the Ranvier node. The Ranvier node, if you pay attention, is like a slit or a narrow hole that is between the myelin cell. The Ranvier node is used to accelerate the path of the cell. Next, the last one is the synapse. Synapses function as a connector between neurons.

That was part of the neuron or part of the nerve cell. Well, based on the function, neurons are divided into three. There are sensoric neurons, motoric neurons, and connector neurons. The function of sensoric neurons is to send impulses from the sensor organ to the nerve center. This sensor organ is a

Our nervous system has five tools: eyes, ears, nose, tongue, and skin. Next is the motoric neuron. The motoric neuron functions to send impulses from the nervous system to the organs, or called the effector, such as the muscle,

or to the spine while the connector neuron functions to connect one neuron to another neuron. Well, next we will discuss the sequence of the path of the organ in the body starting from the impulse or the organ that is received by the receptor. The receptor is an organ receiver such as the nervous system. Then from the receptor, the organ will be taken

by sensoric neurons towards the central nervous system. The central nervous system can be the brain or it can also be the back bone.

Next, the impulse will be brought to the motoric neuron and finally will be brought to the effector or target organ, can be a muscle or can be a muscle. Well, because the central nervous system is divided into two types, it can be the brain or it can also be the back bone, then if the movement is conscious,

The central nervous system that plays a role is the brain And if the movement is a reflex or movement that we do not realize Then it will go to the back bone So if there is a question, write the sequence of the way of the brain in the conscious movement Then the answer is impulse, receptor, sensoric neuron, brain

Neuromotorik And Effektor While if there is a question to write the sequence of the path of the reflex movement Then the answer is Impulse Receptor Neuronsensorik Sumsum Tulang Belakang Neuromotorik And Effektor Like that, guys Just choose between the brain and the back bone But remember, there are certainties Brain for conscious movement And back bone Sumsum for reflex movement

Okay, next we will discuss the brain Brain is the main organ in the central nervous system that regulates all body functions including mind, emotion, movement, and vitality activities The brain is protected by the skull The human brain is divided into three main parts There is the front part of the brain, there is the middle part of the brain, and there is the back part of the brain

The brain in the front consists of the cerebrum or called the large brain, then there is the thalamus and there is the hypothalamus.

Next, for the back of the brain is also divided into three parts There is the Pons Ferolli, there is the Oblongata Medulla, and one more is the Cerebrum Cerebrum is a small brain, while Cerebrum is a large brain Don't be surprised, we will discuss one by one starting from the large brain or Cerebrum Well, for the large brain

has several lobes or several vital parts that have their own functions for the frontal lobe brain or in the forehead function as the decision-maker or thinking center, the movement of consciousness for emotion and language production, and can also be for the smell process

While the parietal lobe located in the buttocks functions as a center of touch, temperature, sense or room orientation. Next, the temporal lobe in the palate function as a center of hearing, memory and language understanding.

and another occipital lobe in the back of the head functions as a visual center or visual interpretation Okay, next we compare between the hypothalamus and the thalamus What's the difference?

Next, let's discuss the middle brain.

or known as mesencephalon. The middle brain is related to the eye reflex center or eye movement and functions as a hearing aid. Next, the back brain consists of a pharaoh bridge or called the pharaoh pond which is responsible for connecting between the right small brain and the left small brain and also connecting between the small brain and the big brain.

Next, there is the small brain or known as the cerebellum. The small brain plays a role in coordinating muscle movements and body balance. And there is the oblongata medulla or the posterior sum sum which functions as the reflex center

Next, we discuss

The back bone structure is one of the types of the second central nervous system besides the brain is the back bone structure which is described like this. The one on the right is the back bone structure structure if the spine is bent. The back bone structure functions to connect the nerves from and to the brain because it is located in the middle.

will go to the head, it will definitely pass the back bone first and if there is a scar that will go to the bottom or to the legs, it will also pass the back bone. This back bone is located from the neck to the bottom.

The back bone muscles function as the motor reflex center, namely the reflex movement performed by the external body organs. Next, there is the lateral syringe system divided into the cranial syringe and the spinal syringe. The cranial syringe is the syringe that comes out of the brain and is responsible for controlling the face, head, and some of the internal organs.

There are 12 pairs. While the spinal cord is a cord that comes out of the back bone and controls the body from the neck to the feet. And the number is 31 pairs. Okay.

Okay, next we will discuss the unconscious digestive system or known as the autonomic digestive system. In our body, there is a digestive system that works without our awareness. Divided into two types, there is a sympathetic digestive system and there is a parasympathetic digestive system. Well, this is just the opponent.

So that the children are not confused which one is included in the example of the sympathetic nervous system and which one is included in the example of the parasympathetic nervous system, pay attention to the image on the left. This image shows the expression of a child who is afraid. Now, imagine when the children are feeling scared,

In a very dark atmosphere, for example at night, what happens to our pupils? Well, the pupils will definitely widen. In low light conditions, the pupils will widen. Next, people who feel scared, their hearts will definitely beat faster.

Because the heart beats faster, the blood flows faster. Well, the blood flows faster, indicating that the blood vessels are smaller or swollen. Well, people with fear usually have a lot of sweats, right? Then the mouth is dry, which means that when people feel scared, the digestive system is not active. Or people who are scared may not feel hungry, okay? Next.

When we are afraid, our breathing becomes faster or more restless. Next, when our body is stressed or in an emergency condition, then the desire to throw away small water becomes hindered because there is relaxation in the stomach. How about the parasympathetic digestive system? Just fight it. Imagine your children in a relaxed condition, where the pupils become smaller, the heart slows down, the blood flows slowly

the blood vessels expand, the sweat that comes out a little, the urinary water leaks or the digestion is active, feel often hungry, then the breath slows down and there is a contraction of the stomach, so it can be easier when you throw away small water. Well, that's the difference between the sympathetic digestive system and the parasympathetic digestive system. Easier to differentiate, right?

The last is the disturbance in the digestive system. Well, actually there are quite a lot of disturbances in the digestive system, but here we can see 8 diseases directly related to the digestive system. There is a disease of meningitis, a brain tumor caused by bacteria Neisseria meningitis. Next, there is hydrocephalus, a formation of brain fluid or enlarged head.

Next, there is Parkinson's, marked with tremor, the facial muscles become stiff, and usually also marked with a twitching pain.

Next, there is a spleen, namely the spleen is pressed by the surrounding parts, for example, the muscles or muscles. Next, there is Alzheimer's disease, which decreases the memory due to the accumulation of abnormal proteins that disturb the brain. Next, there is epilepsy disease or called Ayan. Epilepsy is marked by repeated seizures due to

There is a neuron damage Next there is ataxia, which is the reduction of small brain so it is difficult to control body movements And one more, there is a stroke disease, which is marked by the rupture or rupture of the blood vessels that lead to the brain, causing partial swelling in the body Okay, thank you, friends, for watching this video Hopefully useful and we will meet again in the next video Wassalamualaikum warahmatullahi wabarakatuh