Parasympathetic Dominants often use sleep to overcome energy losses following periods of sustained alertness. The Autonomic Nervous System • The sympathetic branch of the autonomic nervous system is responsible for functions that require focus and decision making. It’s the branch that speeds up when you need to go fast. It goes into high gear when an emergency situation requires quick thinking and reflexes‚ spurts of energy‚ hyper vigilance‚ and rapid heart rate - a need to “fight or flee fast”‚ the fight or
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system. It can be broken down into a somatic nervous system (SNS)‚ an autonomic nervous system (ANS)‚ and an enteric nervous system (ENT). Components that are involved in physical sensation come from both the central nervous system and the peripheral nervous system. To begin with‚ the somatic nervous system‚ which is part of the peripheral nervous system‚ is made up of nerve fibers that detect and carry information
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1: Stretch Reflexes QUESTIONS: A. Which muscles contract with the patellar reflex? Quadriceps What spinal level does this correspond to? L2‚ L3‚ and L4. B. What is the difference between hypo-reflexive and hyper-reflexive responses? (What do these indicate?) Hyperflexia is defined as an increased action of the reflexes.1 Hyperflexia (exaggerated response) results from damaged or diseased motor areas in the CNS.2Hypoflexia is defined as a diminished function of the reflexes. Hypoflexia
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Writing Assignment: Social Phobia Social phobia‚ also known as social anxiety disorder‚ is a psychiatric disorder characterized by anxiety about being in public or social gatherings. People with social phobia have an intense fear of being judged by others and of doing something that will humiliate or embarrass them. They become extremely self conscious and anxious during everyday social situations‚ which makes it difficult to make and maintain healthy relationships. Although this disorder sounds
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Sensory tactile reflex reaction time is faster than auditory and visual. The speed of somatic auditory reaction reflex reaction plays an important role‚ is essential in humans everyday life‚ and to prevent further injuries. For example. if the subject touches a hot boiling kettle their initial reactions steps are: 1) somatic receptor received stimuli a "danger" stimul 2) afferent nerve senses signals to CNS 3) integrate information to decide what to do
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reaction to them. The peripheral nervous system is the larger of the two systems. The peripheral nervous system consists of two more systems inside of it. The two other systems are the somatic and autonomic nervous systems. The somatic nervous system is part of a chain that helps you feel the world around you. The somatic nervous system consists of sensory and motor neurons all around the body. The neurons cover most of the human body and sends signals to the spine and brain so that the body can react
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MICTURITION REFLEX Physiologically‚ micturition involves coordination between the central‚ autonomic‚ and somatic nervous systems. Central nervous system: Prefrontal cortex‚ precentral gyrus‚ postcentral gyrus‚ hypothalamus‚ amydaloid nucleus‚ periaqueductal gray‚ pontine micturition center Autonomic nervous system: Sympathetic: Lateral horn cells of T10-L2 segments of spinal cord (Preganglionic motor fibres)→Synapse with superior hypogastric plexus→ Hypogastric nerve (Postganglionic motor
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Melissa Fellin 10/6/13 A.P. Psych Review Intro There are two communication systems in the brain The Nervous System and the Endocrine System Nervous System: extensive network of nerve cells that carry messages in pulses of electrical and chemical energy throughout the body. This is the network that first comes to your rescue by accelerating you heart and tensing your muscles for action. Endocrine System: a slower acting communication network that sends a follow up message that
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LEVELS OF ORGANIZATION OF NERVOURS SYSTEM: NEURONS: * STRUCTURE AND FUNCTION: Specialized cell transmitting nerve impulses; a nerve cell. Neurons have specialized projections called dendrites and axons. Dendrites bring information to the cell body and axons take information away from the cell body. Neurons communicate with each other through an electrochemical process. Information is transmitted to the receiving cell at junctions via chemical messengers called neurotransmitters. At this juncture
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motor division. The motor division of the PNS has two different divisions the Somatic nervous system and the Autonomic nervous system. The somatic nervous system accounts for all the voluntary movements I make on the rock wall with my muscles. The somatic nervous system conducts impulses from the CNS to skeletal muscles. The PNS accounts for muscle memory as well‚ which helps me to improve with each climb. The Autonomic is made up of two divisions the sympathetic and the parasympathetic. The sympathetic
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