Nervous System

Neuroglia

Nerve cells are part of the nervous system in your body. The main role of a nerve cell is to pass information through the cells to other cells in your body to perform a function. For example, a nerve cell may transmit an electrical signal from one nerve to another in your body, and send it to the brain.

If you put your hand on a burning stove, it sends a pain message to your brain. You feel it, so you know to pull your hand back so that you don't receive bigger damage to your hand. It is like a part of your body sending a 911 call to the brain. The brain then tells you what to do.

The seventh cranial nerve or facial nerve controls voluntary facial movements (motor function) so you can check it through wrinkling the eyebrows or frowning, smiling or showing your teeth, puffing your cheeks, and moving your lips. Check for any abnormalities or asymmetry. Facial nerve has also sensory function as it receives taste sensation to anterior 2/3 of the tongue. This can be tested by swab with different taste and the patient will determine what it is.

each and every part of body is controlled by the nervous system.

it is the vegus nerve.

The nervous system and the immune system effect each other because the immune system detects the virus or bacteria. Sends the signal to the nervous system which reacts in the designated way to the virus.

Neuron

one second

neurotransmitters send signals from neuron to neuron

motor neuron

The central nervous system (composed of the brain and spinal cord) and the peripheral nervous system (composed of the rest).

The parasympathetic nervous system (PSNS) is one of the two main divisions of the autonomic nervous system (ANS). The ANS is responsible for regulation of internal organs and glands, which occurs without conscious effort. The parasympathetic system includes the normal regulation of bodily functions, while the sympathetic system is concerned more with rapid reflexive and instinctive reactions.

epinephrine and norepinephrine stimulate the sympathetic nervous system

Auditory, Glossopharyngeal, Hypoglossal

No a person cannot survive without the circulatory system. This is because, without the circulatory system,

# Transport of nutrients to cells cannot take place. # Waste materials from cells cannot be transported to the excretory organs. # Homeostasis cannot be maintained.

observational learning

The division of the autonomic nervous system that arises from spinal nerves T1 to L3 is the sympathetic division. This division is responsible for controlling involuntary body functions.

It involves many sistems but the one that controls it is the central nervous system. Though there are a few that also work with homeostasis, for example, the peripheral nervous system plays an important role during this process.

The spinal cord is posterior to the chest.

motor

Balls have no nerves, they are inanimate objects.

XI- Accessory (mixed nerve): controls the muscles of the head, neck movement, muscle sense.

Cone cells, or cones, are photoreceptor cells in the retina of the eye which function best in relatively bright light. The cone cells gradually become sparser towards the periphery of the retina.