Nervous System

There are toxic chemicals that are released from the markers that can kill your brain cells and get you addicted to the smell and the feeling that they give off. Sharpies have the same effect. One teenage boy tried to get high off of a sharpie marker and was killed because of extreme damage to his brain.

ewan ko sa inyo!

Flexing your biceps primarily involves the somatic motor portion of the nervous system, which controls voluntary muscle movements. The somatic sensory system is responsible for detecting sensations like touch or pain in the skin, muscles, and joints. So, while you may be aware of the sensation in your biceps when you flex them, the actual movement is driven by the somatic motor system.

The autonomic nervous system that controls the functions within the body. Some functions that it controls are the heartbeat, digestive system, and breathing. The autonomic nervous system is the part of the peripheral nervous system that acts as a control system. It functions largely below the level of consciousness to control visceral functions.

i think they belong to the peripheral nervous system (pns)

Vitamin A is required for the synthesis of rhodopsin, a light-sensitive pigment found in the rods of the retina. Rhodopsin is crucial for low-light vision and helps our eyes adjust to changes in light levels. A deficiency in vitamin A can lead to vision problems, particularly night blindness.

Basically the peripheral nervous system (PNS) consists of all nerves and ganglia which are not in the central nervous system (CNS) which consists of the brain and the spinal cord. The PNS can be divided in to the autonomic nervous system (ANS) which controls involuntary functions such as heart rate and the production of saliva and the somatic nervous system.

ANS can be further divided in to two categories called the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS). SNS and PNS are integral in the homeostatic regulation of the bodies functions.

The somatic nervous system is associated with the bodies voluntary movements such as those of the skeletal muscles, ie the act of you picking up a pen. It is also associated with receiving external stimuli ie hearing, sight and touch.

Calcium (Ca2+) channels open on the synaptic end bulb in response to depolarization (from the action potential), inducing exocytosis of synaptosomes containing neurotransmitter, resulting in neurotransmitter being released into the synaptic cleft...further propagating the signal to the next neuron or set of neurons.

Both Macrophages and leukocytes act as phagocytes within the CNS

It very much depends on what you mean by 'read'. Brain waves are captured routinely every day, in various medical and research settings around the world. But if by read you mean can a computer translate or interpret your thoughts so they can be accurately revealed to others, the answer is no, not yet. Emotional states can be generally determined by brain activity, but specific thoughts, mental images or actual unspoken language cannot be 'read' by any computers known. But that may be changing. The brain is sometimes considered out 'last frontier', the last monumental thing about which we know practically nothing. But we are learning more and more every day.

Vestibular schwannoma, also known as acoustic neuroma, is a non-cancerous tumor that develops on the nerve responsible for balance and hearing, called the vestibulocochlear nerve. Symptoms can include hearing loss, tinnitus, imbalance, and in severe cases, facial weakness or numbness. Treatment options may include observation, radiation therapy, or surgical removal of the tumor.

the brain,spinal cord and the nerves

Sympathetic nervous system, triggering the "fight or flight" response to help you respond to the threat. This activation leads to increased heart rate, dilated pupils, and heightened awareness to prepare the body to defend itself or escape the danger.

The release of 'neurotransmitter substances' from an axon's perifery which traverse the synaptic cleft - the space between axon and adjoining dendrite - to both affect and effect the adjoining dendritic "perifery" which then re-initiates signal propagation to the next bunch of exonic nerve "endings".

Basically everything will reach an equilibrium, and homogeneous mixture of "everything", if given enough time. Living systems stay living by maintain a specific range of disequilibrium within its components (for the most part). The 2nd Law of thermodynamics states basically that temperature, pressure, and chemical potential goes into equilibrium given enough time. this equilibrium is entropy, when things become compartmentalized (ordered) its always do to living systems.

Sympathetic stimulation results in renin secretion by the kidneys and causes a relaxation of the bladder. Accompanied by a constriction of the bladder sphincter, sympathetic stimulation tends to decrease urination and promote fluid retention.

Damage is due to nerve root compression. Only a very small compression will interrupt blood flow to a nerve cell, resulting in numbness or tingling. Pain occurs when the damaged nerve is irritated.

Reflexes are actually carried to the brain through sensory neurons that send signals to the spinal cord. The spinal cord processes the incoming sensory information and coordinates a quick response, sometimes without direct involvement of the brain. This allows for rapid reflex actions to occur without the need for conscious thought.

Neurons are the main cells that perform the function of transmitting electrical and chemical signals in the nervous system. They are specialized for communicating signals between different parts of the body.

As you age, your sense of smell can become weaker, making it harder to detect and distinguish between different odors. This decrease in sensitivity is due to changes in the olfactory system and a reduction in the number of olfactory receptors in the nose. Older adults may also experience a decline in their ability to identify and remember smells accurately.

The lacrimal gland is located superior and lateral to the eye within the orbit. It is situated near the outer canthus of the eye and is responsible for producing tears that lubricate and protect the eye.

Tears are produced by the lacrimal gland and the accessory lacrimal glands and cover the cornea. Tears then drain out the punctum in the medial eyelids, flow down the canaliculi into the lacrimal sac. They then drain down the nasolacrimal duct into the nose at the inferior meatus (under the inferior turbinate).
from the lacrimal galnd to the lacrimal canals (lacrimal puncta canaliculi) to the lacrimal sace, then the nasolacrimal duct and finally the nasal cavity