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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“Bell’s palsy is an unexpected and rather sudden form of facial paralysis or severe facial nerve weakness that is most common but not limited to the ages of 15 through to 60.”[1] As evidenced in the photograph‚ “Bell’s palsy affects the facial nerves that control eye and mouth movement and frowning on one side of the face.”[2] The facial nerve or seventh cranial nerve controls most of the muscles in the face and parts of the ear. “This nerve travels through the narrow fallopian canal in the skull
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The building blocks of our body ’ s neural information system are neurons. Each neuron is composed of dendrites‚ a cell body‚ axon with myelin sheath‚ and vesicles with neurotransmitters. The neuron receives information from sense receptors or from chemical messages from neighboring neurons via its dendrites‚ which pass the information to the cell body. The cell body fires an impulse‚ called the action potential‚ down the axon. The impulse is protected and sped along its way by the myelin sheath
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The Human Body Systems By Yash Dhayal‚ Mathew Nemet‚ and Tom Battaglini Table Of Contents Overview * Skeletal system - Functions and Parts * Muscular System - Types of Muscles * Integumentary System - Functions * Circulatory System - Parts of the Circulatory System * Immune System - Organs and Cells of he Immune System * Respiratory System - Parts of the Respiratory System * Digestive System * Urinary System * Endocrine System * Nervous System Overview *
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When the coffee is finished‚ our coffee maker’s beeping creates pressure changes‚ which move away from the machine and radiate to the individual’s location across the room. The waves reach the outer ear‚ which contains structures known as the pinnae‚ angled such that sound waves bounce off them and resonate. They enter the auditory canal after being significantly amplified before reaching the tympanic membrane. The waves strike the membrane and cause it to vibrate‚ which subsequently transmits them
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Importance of systems B. The major systems 1. List all the systems a. Circulatory System b. Integumentary System c. Skeletal System d. Muscular System e. Nervous System f. Endocrine System g. Lymphatic System (Immune system is a part of this) h. Respiratory System i. Digestive System j. Excretory System (Urinary system is a part of this) k. Reproductive System C. Systems to be discussed 1. Circulatory System (NCES) 2. Integumentary System 3. Skeletal System 4. Muscular System 5. Respiratory
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The Muscular System: Contraction of Motor Units 1. Define a motor neuron:_____A single nerve cell that branches from the brain or the spinal cord to a muscle or a gland. 2. Define a motor unit: ___A motor neuron and all of the muscle fibers it stimulates. 3. The synapse between a motor neuron and the muscle it innervates is called a ____neuromuscular junction_______. 4. The stimulation of additional motor units will increase the strength of the contraction. This process is called
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Two of the most important sensory systems in human body are optical system and auditory system. Optical system or sometime called visual system involved in the process of taken amount of stimuli and transfer it into some figure that we can perceive as images that make senses. Auditory systems involved in sound wave that transduced by drum ear into some kind of vibration that eventually gets converted back into wave what we perceive as noise. There are a lot of similarities in their mechanisms of
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The systems of the body. Systems are the most complex of the component units of the human body. A system is an organization of varying numbers and kinds of organs arranged so that together they can perform complex functions for the body. There are 10 systems in the body‚ but the 3 main are: • The nervous system • The respiratory system • The circulatory system The nervous system. The nervous system has two main parts: • The central nervous system – CNS; This is composed of the brain and the spinal
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Reproductive System What is it? The reproductive system is a collection of organs that work together for the purpose of producing a new life The major organs of the reproductive system include the external genitalia and internal organs‚ including gonads that produce gamete‚ which is a cell that fuses with another cell during conception in organisms that reproduce sexually. Substances such as fluids‚ hormones‚ and pheromones are also important to the effective functioning of the reproductive system What
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