Axons are long nerve processes which carry nerve impulses from the Soma to other neurons, they vary in length but can become almost as long as half of the human body.
The soma (body) of the neuron contains the nucleus which acts as the cell's control centre, these contain many small neurofibrils which project from the nucleus into the dendrites.
Dendrites are short, thick processes which branch out of the soma in a tree like manor. They conduct nerve impulses to the soma.
The three categories of neurons:
Afferent (Sensory) Neurons have the dendrites connected to receptors such as the eyes, ears etc. These receptors change the information they receive into electrical impulses that are transmitted to other neurons. In sensory neurons the axons are connected to other neurons.
Efferent (Motor) Neurons have the dendrites connected to other neurons, the axons are connected to effectors. Effectors are either glands or a muscle cell that is the receiving end of the nerve impulse. The nerve, when excited will cause the effector to react (move, contract, or secrete etc).
Internuncial Neurons have both the dendrites and the axons are connected to other neurons. They are sometimes referred to as connector neurons.
Internuncial neurons are found throughout the body, but especially in the spinal cord and brain.
Properties and characteristics of Neurons:
Normally the electrical impulses (messages) travel through a neuron in only one direction.
The axon may be surrounded by a 'coat' of lipids (fats) and proteins known as the myelin sheath which acts as an insulator.
Neurons are specialist cells that have lost the ability to reproduce themselves. Once the soma of a neuron has died the entire neuron dies, and can never be replaced.
Repair of damaged neurons only occurs in myelinated neurons.
white matter are coloured by myelin, consisting of many neurons supported by neuroglia.
grey matter is soma and dendrites or bundles of unmyelinated axons and neuralgia.
Answer:
One who cares about he/she as a friend (he/she) should have protest and protect from the guy who is bullying.
I think rotation?
sorry if it doesn't help i'm not entirely sure
Answer:
B
Explanation:
i was dianosed with this when i was seven when i had a severe attack causing my chest to feel tight and chest caved in too
Answer: What are the benefits of personal health records?
Personal Health Records: Improving Health Care Quality
Personal health records (PHRs) can help your patients better manage their care. Having important health information – such as immunization records, lab results, and screening due dates – in electronic form makes it easy for patients to update and share their records. PHRs can:
Improve Patient Engagement: Much of what your patients do for their health happens outside clinical settings. When your patients can track their health over time and have information and tools to manage their health, they can be more engaged in their health and health care.
Coordinate and Combine Information from Multiple Providers: PHRs can promote better health care by helping your patients manage information from various providers and improve care coordination.
Help to Ensure Patient Information is Available: Online PHRs can ensure your patients’ information is available in emergencies and when your patients are traveling.
Reduce Administrative Costs: Your organization can reduce administrative costs by using a PHR to provide patients with easy access to electronic prescription refill and appointment scheduling applications.1 With PHRs, your staff can spend less time searching for patient-requested information and responding to patient questions.
Enhance Provider – Patient Communication: Many PHRs allow direct, secure communication between patients and providers. PHRs can make communicating with your patients faster and easier. With open lines of communication, you can be informed and intervene earlier if health problems arise and improve the provider – patient relationship.
Encourage Family Health Management: Having a system for tracking and updating health care information can help caregivers – such as those caring for young children, elderly parents, or spouses – manage your patients’ care and coordinate with you to improve health care quality.