SEELEY'S ANATOMY+PHYSIOLOGY
12th Edition
ISBN: 9781260172195
Author: VanPutte
Publisher: RENT MCG
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Textbook Question
Chapter 12, Problem 1CT
Describe how stimulation of a neuron that has its cell body in the cerebrum can inhibit a reflex that is integrated within the spinal cord.
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Describe how stimulation of a neuron that has its cell body in thecerebrum can inhibit a reflex that is integrated within the spinal cord.
Explain what is meant by a spinal reflex and how they are constructed. , you must have described the direction, named which nerve types are involved, and where the switching between these cells occurs. Please draw, but you must provide sufficient explanation in text so that the image can be understood. Give examples of a specific nerve reflex and describe how it works.
Identify the structures of a spinal nerve and describe the neural pathways of a reflex arc.
Chapter 12 Solutions
SEELEY'S ANATOMY+PHYSIOLOGY
Ch. 12.1 - Prob. 1AYPCh. 12.1 - Name the meninges surrounding the spinal cord....Ch. 12.1 - What is the thecal sac? What two structures hold...Ch. 12.1 - Describe the arrangement of gray arid white matter...Ch. 12.1 - Where are the cell bodies of somatic motor and...Ch. 12.1 - What kinds of neurons are in the dorsal roots, in...Ch. 12.2 - Prob. 7AYPCh. 12.2 - Describe the operation of a gamma motor neuron.Ch. 12.2 - Prob. 9AYPCh. 12.2 - Prob. 10AYP
Ch. 12.2 - Prob. 11AYPCh. 12.3 - Prob. 12AYPCh. 12.3 - What is a dermatome? Why are dermatomes clinically...Ch. 12.3 - Prob. 14AYPCh. 12.3 - Describe the distribution of the ventral rami of...Ch. 12.3 - Prob. 16AYPCh. 12.3 - Prob. 17AYPCh. 12.3 - Prob. 18AYPCh. 12.3 - Name the five major nerves that emerge from the...Ch. 12.3 - Name the four major nerves that arise from the...Ch. 12.3 - Prob. 21AYPCh. 12.3 - Describe the structures innervated by the...Ch. 12.3 - Prob. 23AYPCh. 12 - Prob. 1RACCh. 12 - The structure that anchors the inferior end of the...Ch. 12 - Prob. 3RACCh. 12 - Given these components of a reflex arc: (1)...Ch. 12 - Prob. 5RACCh. 12 - Several of the events that occur between the time...Ch. 12 - Prob. 7RACCh. 12 - Prob. 8RACCh. 12 - Damage to the dorsal ramus of a spinal nerve...Ch. 12 - Prob. 10RACCh. 12 - A dermatome Is the area of skin supplied by a pair...Ch. 12 - Prob. 12RACCh. 12 - The skin on the posterior surface of the hand is...Ch. 12 - The scatic nerve is actually two nerves combined...Ch. 12 - Prob. 15RACCh. 12 - Describe how stimulation of a neuron that has its...Ch. 12 - Prob. 2CTCh. 12 - Prob. 3CTCh. 12 - Prob. 4CTCh. 12 - Prob. 5CTCh. 12 - Prob. 6CTCh. 12 - Prob. 7CT
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- List and describe what is happening in each of the 5 steps of a spinal reflex arc. Assume that the reflex arc is polysynaptic.arrow_forwardComplete transection of the spinal cord produces all of the following effects, except :-a- permanent loss of all sensations mediated by the cord below level of lesionb- permanent loss of voluntary movements by muscles innervated by the cord below level of lesionc- permanent loss of reflexes mediated by the cord below level of lesiond- temporary loss of micturition reflexesarrow_forwardAn individual has a spinal cord injury superior to the area involved in the patellar reflex circuit such that all communication to the brain is broken off. How would this affect the operation of the patellar reflex circuit?arrow_forward
- Describe the difference between a cranial and spinal reflex.arrow_forwardDescribe and explain the importance of reflex pathways, including spinal reflexesarrow_forwardList the names nd functions of the three neurons involved in a reflex arc (eg. a spinal reflex) and briefly describe an advantage of coordinating responses with a spinal reflex (instead of with the brain).arrow_forward
- Name the following parts of the neuron as indicated. Specify the functions of each part. 1 7 2 5 4 3 Illustrate and explain the reflex arc. Illustrate and explain transmission of neuronal impulses across synapse.arrow_forwarddescribe the structure and function of spinal cord as part of central nervous system .arrow_forwardPlease explain what cerebral spinal fluid (CSF) is, how it is made (structures involved); and discuss its complete circulation. EXPLANATION ADDRESSING THE QUESTION ABOVE Cerebral spinal fluid is a fluid that cushions the central nervous system and provides buoyancy to and helps nourish the brain. It circulates around the surface of the brain, interior ventricles, and surface of the spinal cord and central canal of the spinal cord. CSF is created by the ependymal cells in the choroid plexus and ventricles of the brain. CSF is made up mostly of water and also includes ions, nutrients like vitamin c and protein, and can pick up waste as it circulates. CSF circulation starts in the lateral ventricle where the choroid plexus and lateral ventricle creates or secretes the CSF. The CSF then flows through the ventricular foramen into the third ventricle. At the third ventricle, the CSF then flows through the cerebral aqueduct into the fourth ventricle. Then, the CSF exits the fourth…arrow_forward
- We know that a reflex arc is a circuit, but what are the nerve connections arc called?arrow_forwardsomatic motor fibers preganglionic visceral motor fibers postganglionic visceral motor fibers visceral somatic sensory fibers sensory fibers Dorsal root Dorsal ramus Dorsal ramus- Dorsal root ganglion Dorsal root Start Ventral ramus Ventral ramus Dorsal root ganglion Rami communicantes Rami communicantes Ventral Sympathetic ganglion root White ramus communicans Start Sympathetic Gray ramus communicans nerve Sympathetic nervearrow_forwardThe biceps-jerk reflex is carried out by motor neurons that exit the spinal cord in the fifth spinal nerve (C5). The triceps-jerk reflex uses motor neurons in the seventh spinal nerve (C7). Describe how these reflexes might be tested to help pinpoint damage in a patient with a neck injury.arrow_forward
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