Spinal nerves are peripheral nerves that emerge from the spinal cord and carry motor, sensory, and autonomic signals between the spinal cord and the rest of the body. There are 31 pairs of spinal nerves: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal, named according to their corresponding vertebral levels.| Simply Psychology
Progressive Muscle Relaxation (PMR) is a technique that can help reduce anxiety and stress by tensing and then relaxing different muscle groups in your body. This process helps you become more aware of the difference between tension and relaxation.| Simply Psychology
The autonomic nervous system (ANS) is part of the peripheral nervous system (PNS) responsible for regulating involuntary bodily functions, such as heart rate, digestion, respiratory rate, and pupillary response.| Simply Psychology
The 12 cranial nerves are essential nerve pathways that originate in the brain and serve critical functions in the body, primarily in the head and neck. These nerves are: I. Olfactory (smell), II. Optic (vision), III. Oculomotor (eye movement), IV. Trochlear (eye movement), V. Trigeminal (facial sensation and chewing), VI. Abducent (eye movement), VII. Facial (facial expressions and taste), VIII. Vestibulocochlear (hearing and balance), IX. Glossopharyngeal (taste and swallowing), X. Vagus (c...| Simply Psychology
Neurotransmitters are chemical messengers that play a vital role in how your brain and body communicate. They affect everything from your mood and memory to your heartbeat and breathing.| Simply Psychology
The sympathetic nervous system is a branch of the autonomic nervous system that prepares the body for "fight or flight" responses during stressful situations. It increases heart rate, dilates pupils, and inhibits digestion, among other functions, to mobilize the body's resources for immediate action.| Simply Psychology
A neuron is a nerve cell that processes and transmits information through electrical and chemical signals in the nervous system. Neurons consist of a cell body, dendrites (which receive signals), and an axon (which sends signals). Synaptic connections allow communication between neurons, facilitating the relay of information throughout the body.| Simply Psychology
The fight or flight response is a physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival. It prepares your body to either confront or flee from the threat by triggering changes like increased heart rate, quickened breathing, and heightened alertness.| Simply Psychology