Milestone 1: Organ System Assessment Muscular System: Characteristics Skeletal Cardiac Smooth Body Location Attached to bones or‚ for facial muscles‚ to skin Walls of the heart Mostly in walls of hollow visceral organs (other than the heart) Cell Shape and Appearance Single‚ very long‚ cylindrical‚ multinucleate cells with very obvious striations Branching chains of cells; uninucleate‚ striations; intercalated discs Single‚ fusiform‚ uninucleate; no striations Connective Tissue Components Epimysium
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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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The Physiology and Pathophysiology of the Skin Abstract The 5-HT3 receptor is a ligand-gated cation channel located in the central and peripheral nervous system; it has also been detected on a variety of other cells. In the periphery‚ it is found on autonomic neurons and on neurons of the sensory and enteric nervous system. In the CNS‚ the 5-HT3 receptor has been localized in the area postrema‚ nucleus tractus solitarii‚ nucleus vaudatus‚ nucleus accumbens‚ amygdala‚ hippocampus‚ entorhinal‚
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of neurones‚ o conduction of the action potential o synaptic transmission o the principal effects of stimulation of the: sympathetic nervous system and parasympathetic nervous system • Explain and give examples of the following types of drug action: o Receptors (agonists‚ antagonists and partial agonists) o Enzyme inhibition o Membrane transport systems • Apply your knowledge to explain action and side effects of β blockers and β2 agonists. The Action potential • Transmission is due
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The brain develops very quickly 75% by age 2. Describe the brain’s communication system and all of the individual parts associated with this. Neuron‚ axon dendrite‚ synapse‚ neurotransmitter and receptor. Also include transient exuberance. Neuron consists of a cell body and branching fibers. Neurons can communicate by firing chemical or electrical signals. It is excitable and can transmit and process information through electrical and chemical signals. Those signals occur in synapses. Synapses are
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Body Systems of Various Organisms All organisms in the world have a range of systems and organs in their body. Some organisms may share similar body systems while others have absolutely nothing in common. Several of those organisms include humans‚ pigs‚ crayfish‚ and earthworms. From their mushy‚ gushy organs to their soft‚ gentle skin‚ you may think‚ “How are humans and pigs possibly alike? Or a crayfish and an earthworm?” In many ways they may not be‚ but in other ways‚ they are very much alike
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Aging in the brain is a complex process that involves several systems and structures. Normal aging not only shows a decreased activity in neurotransmission‚ but also is a major risk factor for the development of neurodegenerative diseases. Dysfunction of the central noradrenergic and dopaminergic systems is one of the biological characteristics of aging‚ which may contribute to changes in cognitive and motor functions in aged persons. Furthermore‚ aging-dependent norepinephrine (NE) loss occurs earlier
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The Limbic System Most reptiles and lower order organisms only have the “old brain”‚ the evolutionarily oldest part of the brain responsible for vital tasks such as breathing and sleeping‚ whereas higher order organisms have a limbic system. The old brain is comprised of the pons‚ the medulla oblongata‚ the brain stem‚ the thalamus‚ the cerebellum‚ and the reticular formation. The reticular formation is a network inside of the brain stem‚ part of the “old brain” that is essential for arousal (sleeping
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CHAPTER 15 The Endocrine System NOTES 1. Name 4 ways cells communicate with each other and name important characteristics of each. Answers a. gap junctions: really fast‚ nondirectional‚ part of nervous system b. neurotransmitters: fast‚ directional‚ specific‚ limited effects‚ part of nervous system c. paracrines: local tissue fluids‚ nondirectional‚ limited effects d. hormones: slower in onset‚ systemic in bloodstream‚ sustained effects 2. The area of the brain that is
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The Neuromuscular System function to achieve movement at the joints Kinesiology Romaine Campbell 120026 BTT2A G.C. Foster Collage of Physical Education & Sports Mr. April 13‚ 2015 What is the Neuromuscular System? According to research the neuromuscular system is to make the body move‚ a signal travels along neurons nerve cells from the brain to the spinal cord. There‚ "lower motor neurons" pass the message on to the muscles. The end of every lower motor neuron releases a chemical‚ which is
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