Gen Combo Ll Basic Biomechanics; Connect Ac; Maxtraq Software Ac
8th Edition
ISBN: 9781264013876
Author: Hall
Publisher: McGraw-Hill Education
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Chapter 2, Problem 4IP
Select a familiar animal. Does the animal move in the same major reference planes in which humans move? What are the major differences in the movement patterns of this animal and the movement patterns of humans?
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(T/F) Balance and body position during flight would be monitored in part using hair plates located on the prothorax behind the head capsule.(T/F) When performing waggle dances in the hive, the bee would produce pulses of spund to indicate the distance to the flowers and these sounds would be detected by the dance followers using the sensory structure shown in Fig. 3.(T/F) The Central Pattern Generators for operating the indirect flight muscles are contained in the tritocerebrum of the bee's supraesophagael ganglion.
Neuroscience: Define end plate potentials and describe how their propagation leads to a musclecontraction
Please provide pictures with your explanation. This should help me prepare for an upcoming exam. I need to understand what is going and I'm a visual person!!
a. Define the all-or-none principle. b. The same student remarked that at 180 mV stimulus, it is expected that 100 g mass is lifted by the muscle fibre. Do you agree or disagree? Why or why not?
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Gen Combo Ll Basic Biomechanics; Connect Ac; Maxtraq Software Ac
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- a. Define threshold potential. b. One student commented that the threshold potential for this muscle fibre is exactly 50 mV. Do you agree or disagree? Why or why not?arrow_forwardMyasthenia Gravis: flaccid paralysis Explain the physiologic basis of flaccid paralysis in myasthenia gravis.arrow_forwardMuscle Contraction In an experiment, the strength of a neural stimulus and the resulting muscle contraction are compared. A single motor neuron that synapses with one muscle fibre is observed in this experiment. One end of the muscle fibre is attached to a mass. The following data were obtained from the experiment. Analyze the data and answer the following questions. Number of Trials Strength of Stimulus (mV) Mass Lifted by Muscle Contraction (g) 1 20 2 40 3 60 50 4 80 50 100 Not Tested 120 50 *note that the voltage applied is positive in order to raise potential from resting to threshold Identify the manipulated, responding and controlled variables in the experiment described above. Strength of Stimulus Number of Muscle Fibre Stimulated Mass Lifted by Muscle Contractionarrow_forward
- T or F. Motor signals originating in the cortex can't interfere with motor reflex response? T or F. Reflex functions are exclusive only for responses within the level of the spinal cord? T or F. Internuerons can simultaneously inhibit the transmission of nerve impulses into the antagonistic muscle on the ipsilateral side of the body and to the same muscle on the contralateral side of the body?arrow_forwardAccording to Schmidt's theory of motor control, the mechanism primarily responsible for the control of coordinated movement controls Question 10 options: a specific movement. all actions involving the same limb. all actions involving limbs on the same side. a class of actions.arrow_forwardanalyzearrow_forward
- Explain why α‒γ coactivation is important for quality control of voluntary motions.arrow_forwardCo-activation of α and γ-motor neurons :-a- increases γ-motor neuron discharge whenever the activity of α-motor neurons rises to a high levelb- is mediated by interneurons that link the α and γ-motor neuronsc- maintains the proprioceptive information to higher centers during muscle contractiond- increases the α-motor neuron discharge whenever the activity of γ-motor neurons rises to a high levelarrow_forwardCan you modify this experiment so that the mass lifted by the muscle contraction continues to increase for every trial? If yes, explain how it should be modified. If no, explain why.arrow_forward
- *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.arrow_forwardrespectively. Speculate about what this ratio difference means in terms of muscle activity potential and a possible evolutionary significance of this difference. 4. Fleas can jump up to 40 times their body length. However, calculation on the biomechanics of the leg extensor muscles, do not provide enough force to account for such jumps. If the flea's ability to jump high is not reliant upon muscle strength, how else could the leg structure be modified to assist in the flea jumping mechanism? How would you test your idea? Search.entries or author Unread Edit View Insert Format Tools Table 12pt v Paragraph v B I A 1) 2$ & 4 6 dele E T Y U H J K L Dz * 00arrow_forwardFigure Ql shows the typical electrical recording of movement artifacts during the resting potential and also the action potential when an adequate stimulus is delivered. Potential overshoot (, > 0) Movement artifact Action potential -80 Stimulus artifact Resting potential Figure Ql In your own words, discuss the phenomena occur during the resting state and active state until the equilibrium potential is established. (a) Membrane potential (m), mVarrow_forward
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