Axon

1. The resting membrane potential is the potential difference across the cell membrane of excitable cells such as nerve and muscle cells. The 3 major factors that establish a resting membrane potential are as follows: (1) Non-diffusible anions: The resting membrane potential is influenced by the presence of large non-diffusible anions (proteins, nucleic acids and organic phosphates) inside a cell. The presence of large non-diffusible anions inside a cell attracts a large number of cations and…

receive the message through the dendrites, which receive messages. Then, the message passes through the cell body, which is the life support of the cell. Next, the axon receives the message and the neural impulse travels down the axons. The axons are covered by the myelin sheath, which help speed up the neural impulse. Finally, they reach the axon terminal. 4b. Neurotransmitters are the chemical messengers that sends information to a receiving neuron. It is not a hormone because hormones travel…

In neuronal development, the general rule is that cells are generated in sites different from those they later reside in. The Nervous System is the master controlling and communicating system of the body. Electrical impulses act as signaling device; they are rapid, specific and cause immediate responses. They also use sensory receptors to monitor changes called stimuli. This is where gathered information creates sensory input. Integration is the processes and interprets sensory input which…

parts, the brain, and the spinal cord. The peripheral nervous system is made up of two parts as well, the somatic nervous system and the autonomic nervous system. 2. What are Neurons? Describe the key parts of Neurons, including: Dendrites, Myelin, Axons, and Synapse. To keep it simple, a neuron is a nerve cell. Most neurons are very similar to a typical cell, but have a few structures that set it apart. The main part of the cell is known as the soma, or cell body. In the soma is the…

Reaction time is the period that it takes for the body to respond to an action (“Stimulus”) that is often causing a disruption in homeostasis or being a change in the environment (Bradshaw). The system responsible for its function is the nervous system. The nervous system is the answer in how we communicate, move, feel, sense and control ourselves. There are two main parts in the nervous system that are significant because humans depend so much on them. The two parts are the Central nervous…

How are humans, or any sentient life for that matter, anything more than complex arrangements of meat, neurons, and bone? The biophysical explanation of human physiology explains, quite in depth, the entire genetic makeup and biochemical arrangements from the simplicity of a ball and socket joint to the complexity of the brain. Surely the vast amount of research regarding human physiology could spearhead further research into the complexities of perception and thought, correct? There is no way…

This essay will discuss the question of “Should people be allowed to eat fugu given the risks?”, with detailed explanation to the science behind fugu poisoning. The target audience is for anyone who is interested in eating fugu, anyone who eats fugu, and anyone who is interested to just know about how it works. Fugu eating has been around Japan since about 10,000 B.C . It’s one of the most historical food in Japan. However despite the taste of this delicacy, fugu is also highly poisonous. fugu…

physiological mechanisms underlying its action and properties will be conducted. Before understanding how Prozac works, it is important to review biological aspects of the neuron and neurotransmission. The neuron is comprised of the cell body, axon, and dendrites. Axons from one neuron connect to the dendrites of other neurons and send electrochemical messages via the synapse (Jahn, 2016). The electrochemical messages sent between neurons…

inhibit the autoimmune response. Multiple Sclerosis is a disease where nerve fibers or axons get damaged in the brain, spinal cord and optic nerve and lose their functionality. Body movements can become very painful and some patients find it even hard to…

inferiorly from the medulla oblongata to the inferior border of the L1 vertebrae. The spinal cord is divided into 5 parts that house the 31 pairs of spinal nerves. The cervical part is the superior part of the spinal cord. It contains neurons whose axons contribute to the 8 pairs of cervical spinal nerves. The thoracic part lies inferior to the cervical part. It houses the neurons for the 12 pairs of thoracic spinal nerves. The lumbar part contains the neurons for the 5 pairs of lumbar spinal…