Somatic Motor Neurons

Next, the axon hillock, which is located at the end of the soma; controls the firing of the neurons. If the total strength of the signal exceeds the threshold limit of the axon hillock, the structure will fire a signal down the axon. The axon is the elongated fiber that extends from the cell body to the terminal endings and passes on the neural signal. The faster the information moves, the larger the axon is. Lastly, the terminal buttons, which are located at the end of the neuron are responsible for delivering the signal on to other neurons. At the end of the terminal button is a gap known as a synapse. The All-Or-None Law means that a neuron either fires or it doesn't, depending upon the number of excitatory and inhibitory inputs it gets. Each time it fires it does so with the same level of intensity; it has the possibility to fire more often, such as in signaling a tight squeeze from your head basketball coach, or less often, such as in signaling a gentle touch from a significant figure in you life. No matter the neuron, each time the action potential will be

Take the slip of the hand as an example. Some internal firing of neurons resulted in the slip of the hand. To be thorough, we

send this information to the central nervous system. The motor neurons in turn carry processed

The brain then will send motor neurons to the correct affecter in muscles and glands (Understanding the Basic Anatomy and Physiology of the Human Body).

Carry messages from special receptors in the skin, muscles, and other internal and external sense organs to the spinal cord, which sends them to the brain

As the message arrives at the end of the nerves, the message is transmitted to the muscles. Before the message is transmitted to the muscles it has to pass the space between the end of the nerve and the muscle, and that space is called neuromuscular junction. The message is transmitted from the brain to the end of the nerve and from the nerve to the neuromuscular junction, and when the message arrives the chemical called neurotransmitters are released.

Neurotransmission also known as synaptic transmission is a process of communication between the neurons in the nervous system. It is a process in which signaling molecules like neurotransmitters are released by neurons. Neurons are connected to one another. They receive information from other neurons through synapses and process this information and then send it as an output to other neurons. This is called a neural network, a group of neurons through which information flows from one neuron to other neuron. There are two types of neurons, the presynaptic neuron and the postsynaptic neuron. Presynaptic neuron is the neuron that lies before the synapse and transmits the information across the synapse to another neuron. The neuron that receives the information from presynaptic neuron is known as postsynaptic neuron. The process of this transmission between neighboring synapses is very well organized, but it is quite different for transmission that is mediated by neuropeptides and nitric oxide. Before knowing the process behind

Thoughts that started in the cerebral cortex as synapses between unmylientated neurons of many brilliant gentleman. These synapses traveled to other parts of the brain to turn into synapses that signal movement of certain muscle fibers. Movement that occurs by a signal accompanied by chemical elements traveling down millions of dendrites, myelinated axons, and axon terminals. They reach the muscle fibers where synaptic vessels release acetylcholine into the synaptic clef where the ACH(acetylcholine) travels down the sarcolemma into the T tubules into the SR which releases Calcium ions. The Calcium ions then attach to protein myosin which attaches to tripoponin a protein part of actin. The myosin contracts moving the actin and then more acetylcholine is produced so the myosin unhooks from the actin. These muscle

Sensory neurons, interneurons, and efferent neurons. Sensory neurons carry information to the CNS. They detect stimuli like light, pressure, heat, and chemicals. Peripheral sensory neurons have cell bodies that are close to the CNS. Interneurons are found entirely in the CNS. They usually have numerous branches, which allow them to communicate with a lot of other neurons. Efferent neurons carry signals away from the CNS to other parts of the body. Efferent neurons can be either somatic or autonomic. The somatic motor neurons control skeletal muscle, while autonomic neurons control smooth muscle & cardiac muscle, exocrine glands, endocrine glands, and some adipose tissue. Autonomic neurons have enlarged areas on the axon called varicosities.

Neurons carry impulses from one place to another around the nervous system. They connect receptors to the central nervous system, and connect one part of the nervous system to another, for example in the brain and spinal cord. They also carry impulses from the nervous system to effector organs, such as muscles and glands. When neurons are stimulated they transmit an electrical impulse. The brain sends messages through the spinal cord to peripheral nerves throughout the body to control the muscles and organs. The spinal cord is responsible for two functions within the nervous system. It connects a large part of the peripheral nervous system to the brain. Information reaching the spinal cord through sensory neurons are transmitted up into the

The peripheral nervous system (PNS) is connected directly to the central nervous system, and consists of neurons and nerves that send information back and forth the CNS. Furthermore, the peripheral nervous system can be divided into two sections, the sensory nervous system and the motor nervous system. The Sensory The sensory nervous system is in charge of transmitting data from a variety of internal organs or from external stimuli to the central nervous system using sensory nervous cells. On the other hand, the cells of the motor nervous system (motor neurons), take the impulse from the CNS to effectors, which include glands and muscles. In addition, the motor nervous system can be further divided into the somatic nervous system, controls voluntary actions of the skeletal muscle and external sensory organs, whilst the autonomic nervous system operates

Initially, a small number of neurons are excited in one part of the brain. An electrical impulse is generated leading to millions of surrounding neurons to fire excessively. This excess excitability spreads

A reflex arc is a pathway through which a reflex travels in the nervous system. The reflex travels from the stimulus to a sensory neuron. Sensory neurons are the neurons responsible for converting various external stimuli that come from the environment into corresponding internal stimuli. Then the reflex goes from the sensory neuron to a motor neuron. Motor neurons are found in the central nervous system (CNS) and they send axons outside of the CNS and control muscles either directly or indirectly. Once it reaches the motor neuron, the reflex travels and ends with the actual reflex muscle movement.

Due to internal or external changes in the environment, the body reacts and give off fast responses, known as reflexes. Homeostasis is maintained through this. These reflexes are associated with the body systems like urination, heart rate, and respiration and also with skeletal muscle contraction.

When we touch a hot stove, it is detected by our sensory receptors and it sends a nerve impulse to our spinal cord via nerve fibres. When there is tissue damage, pain receptors are activated. Once a signal reaches the spinal cord, neurotransmitters are released. From the spinal cord, the signals go the brain and then the thalamus. It is then sent to the somatosensory cortex.