Fundamentals of Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134396026
Author: Frederic H. Martini, Judi L. Nath, Edwin F. Bartholomew
Publisher: PEARSON
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Question
Chapter 16, Problem 2CP
Summary Introduction
To determine:
The number of motor neurons need to carry the action potential from the spinal cord to smooth muscles in the wall of intestine.
Concept introduction:
Action potential is an electrical impulse that is needed to transfer the message from CNS to the organs muscles that carries out response to the stimulus. The source of energy for the development of the action potential is derived from the sodium and potassium ions. It is simply a concept of changes in the ionic concentration. It is produced by a type of passage or gate known as the voltage gated ion channels in the cell membrane.
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Students have asked these similar questions
*When dynamic y-motor neurons are
activated at the same time as a-motor
neurons to muscle,
[A] prompt inhibition of discharge in
spindle la afferents takes place.
[B] clonus is likely to occur.
[C] the muscle will not contract.
[D] the number of impulses in spindle
la afferents is smaller than when a
discharge alone is increased.
[E] the number of impulses in spindle
la afferents is greater than when a
discharge alone is increased.
List the 3 major classes of motor proteins:
Motor neurons release what type of neurotransmitter onto the motor end plate of skeletal muscles? What effect does this neurotransmitter have on the postsynaptic membrane?
Chapter 16 Solutions
Fundamentals of Anatomy & Physiology (11th Edition)
Ch. 16 - Prob. 1CPCh. 16 - Prob. 2CPCh. 16 - Prob. 3CPCh. 16 - Prob. 4CPCh. 16 - Prob. 5CPCh. 16 - Prob. 6CPCh. 16 - Prob. 7CPCh. 16 - Prob. 8CPCh. 16 - Prob. 9CPCh. 16 - Prob. 10CP
Ch. 16 - Name the two types of cholinergic receptors on the...Ch. 16 - Prob. 12CPCh. 16 - Prob. 13CPCh. 16 - Prob. 14CPCh. 16 - Prob. 15CPCh. 16 - Prob. 16CPCh. 16 - Prob. 17CPCh. 16 - Prob. 18CPCh. 16 - Prob. 19CPCh. 16 - Prob. 20CPCh. 16 - Prob. 21CPCh. 16 - Prob. 22CPCh. 16 - Prob. 23CPCh. 16 - Prob. 24CPCh. 16 - Prob. 25CPCh. 16 - Prob. 26CPCh. 16 - Prob. 27CPCh. 16 - Prob. 28CPCh. 16 - Prob. 1RQCh. 16 - Prob. 2RQCh. 16 - Prob. 3RQCh. 16 - Prob. 4RQCh. 16 - Prob. 5RQCh. 16 - Prob. 6RQCh. 16 - Prob. 7RQCh. 16 - What are the components of a visceral reflex arc?Ch. 16 - Prob. 9RQCh. 16 - Prob. 10RQCh. 16 - Prob. 11RQCh. 16 - All preganglionic autonomic fibers release _____...Ch. 16 - Prob. 13RQCh. 16 - Prob. 14RQCh. 16 - Prob. 15RQCh. 16 - Prob. 16RQCh. 16 - Prob. 17RQCh. 16 - Prob. 18RQCh. 16 - Prob. 19RQCh. 16 - Prob. 20RQCh. 16 - Prob. 21RQCh. 16 - Prob. 22RQCh. 16 - Prob. 23RQCh. 16 - Prob. 24RQCh. 16 - Prob. 25RQCh. 16 - Prob. 26RQCh. 16 - Prob. 27RQCh. 16 - Prob. 28RQCh. 16 - Prob. 29RQCh. 16 - Prob. 30RQCh. 16 - Prob. 31RQCh. 16 - Prob. 1CCCh. 16 - Prob. 2CCCh. 16 - Prob. 3CC
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- Put the following events in chronological order. (Some of the steps may be missing.)1) Ca*+ floods into the pre-synaptic neuron.2) ch (Acetylcholine) binds to ACh receptors in the sarcolemma.3) Na+ floods into the post-synaptic muscle cell.4) The A.P arrives at the pre-synaptic terminal causing Ca+ channels to open.5) Ach from the synaptic vesicles spills into the pre-synaptic cleft.6) A post-synaptic action potential results in the muscle fiber (depolarizationarrow_forwardDescribe the functions of prime movers, antagonists, and synergists.arrow_forwardWhen a cardica muscle is isolated and placed in a solution of sodium chloride, potassium chloride, and sodium bicarbonate, will muscle contraction occur if:a. muscle is stimulated directly by depolarizing the membrane? (provide a short explanation)b. muscle is stimulated by stimulating the nerve to the muscle? (provide a short explanation)arrow_forward
- 147 An investigator is examining the effects of various manipulations on the electrical activity in intestinal smooth muscle. The resting changes in membrane potential are shown between points W and X in the figure shown The observed changes in membrane potential are most likely due to which of the following manipulations occurring at points X and Y, respectively? Point X Point Y B) Acetylcholine administration Epinephrine administration Norepinephrine administration Stretching the smooth muscle C) stretching the smooth muscle acetylcholine administration stretching the smooth muscle sympathetic stimulation vagal afferent stimulation E) Sympathetic stimulation. OOOO Membrane potential (mv) -20- -30- -40- -50- -60- -70- 0 in vrr t 10 15 20 Time (sec) 25 30arrow_forward4) You set up an experiment using an isolated mouse muscle-nerve preparation.a. Draw the force traces (used to measure the force of contraction using a force transducer) you wouldexpect to get if you stimulated the nerve at 3 different lengths: 1) slack, 2) the normal length of the musclein the body, and 3) stretched past a length the muscle could ever experience in a mouse. If the force tracesare different explain why. (Hint: refer back to the length-tension relationship)b. Draw the nerve signals you would record from a Group Ia muscle spindle afferent at each of those 3lengths. If the 3 conditions are different explain why. (Hint: refer back to the function of the musclespindlearrow_forwardDescribe the general anatomical design of a muscle spindle and discuss its physiological function.arrow_forward
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