ANATOMY & PHYSIOLOGY LL W/CONNECT ACCESS
ANATOMY & PHYSIOLOGY LL W/CONNECT ACCESS
4th Edition
ISBN: 9781265521363
Author: McKinley
Publisher: MCG
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Chapter 15, Problem 4DYKB
Summary Introduction

Introduction:

The nervous system controls and regulates the physiological and metabolic functions of the body. ANS or the autonomic nervous system controls the involuntary activities of the organs in the body. These works generally in an antagonistic manner in form of sympathetic and parasympathetic nerves.

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Select all of the statements from the list below that are true.    Within a single axon, an action potential is always of the same magnitude. (In other words, it always looks the same on a trace of the membrane potential.)   All excitatory post-synaptic potentials trigger an action potential.   Graded potentials are always hyperpolarizing.   The action potential always moves in one direction along an axon.    Integration of sensory information is a major function of the central nervous system.   All axons in the body are myelinated.
Your nervous system is organized into two broad anatomical divisions: the central nervous system (consisting of the brain and spinal cord) and the peripheral nervous system (PNS). Your PNS is further organized into two functional divisions. If you tap your knee, the signal to act is carried via your   to the muscles in your knee. In contrast, the signals that pass via the   are involuntary and act primarily to regulate your body's internal environment. This involuntary nerve system is further organized into three divisions. If you need a sudden burst of energy, your   is activated to help you act quickly. In contrast, if you are relaxing and conserving energy, then it is your   that is primarily in action. The third division is your   which helps control the components of the digestive system.
Two separate post-synaptic interneurons receive synaptic potentials from afferent neurons in the periphery. The dendrites of one these interneurons receive an excitatory post-synaptic potential (EPSP) and an inhibitory post-synaptic potential (IPSP) of equal magnitude at the same time. The dendrites of the other interneuron receive one excitatory post-synaptic potential that is the same sized as the EPSP and IPSP received by the other interneuron

Chapter 15 Solutions

ANATOMY & PHYSIOLOGY LL W/CONNECT ACCESS

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