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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BIOLOGY 2113 Unit IV Review Guide Chapters 13-17 Chapter 13 – True or False 1. The nervous system consists of the brain‚ spinal cord‚ and nerves. 2. The afferent nervous system consists of all outgoing motor pathways. 4. Ependymal cells engulf and destroy microbes and cellular debris in inflamed or degenerating brain tissue. 5. Oligodendrocytes form myelin sheaths around nerve fibers in the CNS. 6. Nerve fibers with many Schwann cells forming a thick myelin sheath are called myelinated fibers
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STUDY GUIDE: THE BRAIN 1. Approximately how many neurons are there in the brain? about 100 billion 2. What is a neuron? It is a nerve cell that sends and receives electrical signals over long distances within the body 2b. be able to label its parts. Parts of a neuron. A neuron has three basic parts‚ the cell body‚ the axon‚ and the dendrites. A thin nerve membrane surrounds the entire cell 3. How fast do neurons travel? Neurons
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different function. This includes the brain stem which connects to the spinal chord. The brains stem helps to perform basic functions for humans like heart rate‚ breathing‚ digesting food‚ and for sleeping. You can locate the brainstem below the limbic system. The Brainstem contains the pons and medulla. The pons is above the medulla and helps to perform motor control like sounds are transferred from the ear to the brain through the pons. It also helps with your consciousness and sleep. The pons is linked
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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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possible without the functioning of the nervous system? a. ideals‚ thoughts‚ and plans c. behaviors‚ emotions‚ and cognitions b. imagery and cognitions d. all of these ANS: D DIF: 2 REF: 2-26 OBJ: 1 MSC: TYPE: Conceptual 2. A(n) _________ is a nerve cell. a. axon c. dendrite b. neuron d. glial cell ANS: B DIF: 1 REF: 2-26 OBJ: 1 MSC: TYPE: Factual NOT: BTC 3. ________ remove dead neurons and waste products from the nervous system‚ nourish and insulate neurons‚ and
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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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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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cardio-vascular and respiration systems are interrelated‚ and how they function in a specific task/job. Internally in the human body‚ has to be well-controlled and organised with different progressive systems in which they must interconnect and interrelate in order to perform their role efficiently and successfully. There are different types of systems in the body (mainly 10) in which they all function in different ways and interrelate. An example would be the‚ nervous system which in fact regulates all
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