What are the major organs in the nervous system? What is the difference between the parts of the central nervous system and parts of the peripheral nervous system? What is the peripheral nervous system (PNS)? W
What are the major organs in the nervous system? What are the four neurotransmitters that bind to ion channels? What is the function of neurotransmitters? If it helps, think about the neurotransmitter, acetylcholine. Their function is to: A. be released from the end of the axon (the axon ...
What are the main components of the sympathetic nervous system? There are three major molecules secreted within the sympathetic nervous system –acetylcholine, epinephrine, and norepinephrine. Acetylcholine plays a major role in synaptic transmission of electrochemical signals from the presynaptic neurons. ...
Heartworms,Dirofilaria immitis, are foot-long worms that live in the heart, as well as in lungs and blood vessels of affected animals. Spread by over 70 species of mosquitoes, heartworms can cause lung disease, heart failure and damage to other organs in the body, says Bianca A. Zaffarano...
The major portion of the nervous system is protected by the cranium (the 22 bones of the skull) and the vertebral bones. However, the brain and the spinal cord are protected in a tough material called the dura mater (translated from the Latin to mean, “tough mother”). It’s a membra...
The brain is composed of billions of cells that use chemicals and electricity to communicate between themselves and the rest of the body. There are two major types of cells, neurons and glial cells; there are subtypes of these cells.
Sometimes the stress is caused by something psychological, such as constantly worrying about losing a job or a family problem. Other times the cause of the anxious feelings can be environmental, such as an upcoming major deadline or trying to get to work during a busy rush hour. ...
group of different organs that work together to serve an essential function in the body. Some examples of organ systems include the nervous system (the brain, spinal chord, and nerves), the circulatory system (the heart and blood vessels), and the digestive system (the stomach and intestines)...
Baby’s Growth in the First Trimester During the first 13 weeks, your baby changes from a fertilized egg into a fully-formed fetus. All the major organs and systems are taking shape. That means your baby could be harmed if you use street drugs, have an illness, or get exposed to radiat...
Lymphatic System Structures The major components of the lymphatic system include lymph, lymphatic vessels, and lymphatic organs that contain lymphoid tissues. Lymphatic Vessels Lymphatic vessels are structures that absorb fluid that diffuses from blood vessel capillaries into surrounding tissues. This fluid...