1) The brain and spinal cord comprise the _____ nervous system. A) autonomic B) peripheral C) central D) efferent E) afferent 2) Voluntary control of skeletal muscles is provided by the _____ nervous system. A) sympathetic B) parasympathetic C) afferent D) somatic E) autonomic 3) The part of the peripheral nervous system that brings information to the central nervous system is A) motor. B) afferent. C) efferent. D) autonomic. E) somatic. 4) The myelin sheaths that surround the axons of some of the
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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‚ or gray fibers. 8. Most of the neurons in the brain and spinal cord are unipolar. 9. In a contralateral
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system? Ventral roots Motor cortex Ventral horn All of these are component of the somatic nervous system Mechanoreceptors that respond to changes in blood pressure are called Baroreceptors Assessing spinal nerve damage may involve the use of a vibration fork that is tapped along segments of the spinal nerve pathway. Which type of sensory receptor detects vibrations? Tactile receptor During anesthesia‚ a complete disruption in sensory perceptions is desired. Which of the following events is NOT
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most‚ complex systems in the human body. It can be broken down into two main subdivisions‚ the central nervous system (CNS) and the peripheral nervous system (PNS). The central nervous system contains about 85 billion neurons and includes the spinal cord and brain. It is considered the control center of the body and processes all types of incoming sensory information. The peripheral nervous system is composed of all the other tissue outside of the central nervous system. It can be broken down into
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1. Describe the general structure and function of the nervous system. The Nervous System is a "network" which delivers information and monitors the processes taking place in our bodies at all times. The nervous system in all its aspects allows us to function as a single controlled and coordinated unit. The basic nerve cell nerve cell is a neuron; a chain of neurons is actually a "communication cable "inside our bodies. Neuron structure is basically the cell nucleus‚ the dendrites which receive information
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form properly around part of the baby’s spinal cord. A person with Spina bifida is where the spinal column does not close completely and covers the spinal cord‚ usually resulting in a protrusion of the spinal cord‚ its covering‚ or both (Turnbull‚ Turnbull‚ Shank & Smith 2004‚ pg. 346). Spina bifida‚ which is not a progressive condition‚ has three common forms. The first form is Meningocele which is where cerebral spinal fluid leaks out of the spinal canal causing the area over the baby spine
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choroid with the iris Conjunctivitis- is inflammation of the conjunctiva. Decussation pyramids- the crossing of the fibers of the corticospinal tracts from one side of the central nervous system to the other near the junction of the medulla and the spinal cord. External auditory meatus- he canal extending from the opening in the external ear to the tympanic membrane. Fovea centrals-Is a part of the eye‚ located in the center of the macula region of the retina. Glaucoma- refers to a group of eye conditions
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time of emergency (i.e. at a time when you’d expect just the opposite homeostatic response)? Pg. 969 This occurred because Allen’s spinal cord has decreased perfusion due to damage‚ and a broken vertebral bone. Also‚ there has been a disruptions of the sympathetic fibers of his autonomic nervous system therefore it can no longer stimulate the heart. Allen likely has spinal shock. 2. Upon admission to the hospital‚ Allen’s breathing was rapid and shallow‚ can you explain why? Pg. 969 Due to Allen’s
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Spinal Cord- The spinal cord is a long‚ thin‚ tubular bundle of nervous tissue and support cells that extends from the brain (the medulla oblongata specifically). The brain and spinal cord together make up the central nervous system (CNS). The spinal cord begins at the occipital bone and extends down to the space between the first and second lumbar vertebrae; it does not extend the entire length of the vertebral column. It is around 45 cm (18 in) in men and around 43 cm (17 in) long in women. Also
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T10-L2 segments of spinal cord (Preganglionic motor fibres)→Synapse with superior hypogastric plexus→ Hypogastric nerve (Postganglionic motor fibres) → UB Parasympathetic: Lateral horn cells of S2-S4 segments of spinal cord (Preganglionic motor fibres) → Form pelvic splanchnic nerve→ Synapse with the cell bodies of postganglionic motor fibres situated close to or within the bladder wall→ UB Somatic nervous systems: Anterior horn cells (Onuf’s nucleus) of S2-S4 segments of spinal cord→ Pudendal nerve
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