The role of γ-motor neurons in regulation of equilibrium is achieved   by :-a- initiating contraction of spindle fibers which directly antagonize postural deviationb- increasing spindle sensitivity to stretchc- directly stimulating extrafusal muscle fibers to antagonize postural deviationd- directly adjusting the discharge of α-motor neurons innervating the extrafusal muscle fibers to antagonize postural deviation

Q: When arm muscles hurt after heavy exercise, the pain is detected bya. neurotransmitters.b.…

A: A nerve cell or neuron is the basic building block of the nervous system. This is known as the…

Q: Premotor cortex is associated with ___________, whereas the supplementary motor area is associated…

A: Premotor cortex is the part of motor cortex that is situated in the frontal lobe of brain and is…

Q: γ-motor neuron discharge to a muscle is inhibited by impulses reaching the γ-motor neurons from all…

A: A gamma motor neuron cell bodies are located in the anterior grey column of the spinal cord. A gamma…

Q: Which of the following changes to an action potential indicates a larger stimulus?    Increased…

A: Introduction: Action potential refers to the sudden, transitory, and propagating change of the…

Q: Premotor cortex is associated with ___________, whereas the supplementary motor area is associated…

A: The motor cortex is the prefrontal cortex zone included in deliberate development arranging,…

Q: Co-activation of α and γ-motor   neurons :-a- increases γ-motor neuron discharge whenever the…

A: Alpha (α) motor neurons control muscle contraction involved in voluntary movement, whereas gamma (γ)…

Q: Sensory impulses from spindles of a stretched muscle could inhibit antagonistic muscles by :-a-…

A: The nervous system plays a major role in transmitting the reflexes from the tissues to the brain.…

Q: Which of the following describes a stretch reflex?A. The receptor detects that a muscle is…

A: The receptor detects that a muscle is stretched, and sends a signal to contract it reflexively.

Q: Which role do gamma (γ) motor neurons play in the function of a muscle spindle? Select one: a.…

A: Gamma motor neurons work in muscle contraction and represent 30 percent of the group A nerve fibers…

Q: Please show a-e. a.) background b.) purpose c.) methods d.) results e.) conclusion Lastly,…

A: Athletes are the person who involve in athletic activities , their potential depends on the…

Q: An autonomic neuroeffector junction Has the same structure as a somatic motor neuroeffector…

A: Neuroeffector junction is a site where a motor neuron releases a neurotransmitter to affect a…

Q: The cerebellum controls performance of rapid movements by :-a- directly stimulating AHCs of the…

A: The cerebellum is a large dorsally projecting part of the brain, which receives information from the…

Q: Describe motor control in terms of the conceptual motor control hierarchy. Use the following terms:…

A: The axon terminals of the many neurons junction on a motor neuron at intervals in the brain stem or…

Q: In the stretch reflex,a. Golgi tendon organs activate contraction in extrafusal muscle…

A: A stretch reflex occurs when muscles are stretched, and the receptors send action potentials up the…

Q: Increased γ-motor neuron discharge stimulates muscle spindles, because :-a- it produces stretch of…

A: A gamma motor neuron (γ motor neuron) is a type of lower motor neuron, which takes part in the…

Q: Compared to an action potential, a graded potential is weak and depending on the stimulus strength…

A: Neuron is a vital part of nervous system that is involved in transmission of signal impulse to all…

Q: Absence of a tendon jerk could result from any of the following conditions, except :-a- lesions of…

A: Tendon jerk is a dynamic stretch reflex contraction of the muscle to which the tendon is attached.…

Q: a) What channels are open at 3 if this was recorded on the axon of a sensory neuron? 1. K+ voltage…

A: The term action potential refers to the electrical form of signals which are used for the…

Q: Which of the following changes to an action potential indicates a larger stimulus?  a. Increased…

A: Action potential takes place when the membrane potential of a particular cell location increase and…

Q: Pain produced by muscle spasm results from :-a- mechanical stimulation of pain receptor by muscle…

A: Muscle spasm is an involuntary, persistent, sudden contraction of one or more muscles. It usually is…

Q: You want to record membrane potential changes in axons of neurons that process different types…

A: Neurons carry impulses from the receptor to the brain and the brain to effector organs. Nerve tissue…

Q: Fasciculations of lower motor neuron lesions :-a- are caused by injury currents initiated in the…

A: The brain is the most important part of the body that controls every action in our body. It is a…

Q: What do we mean by the somatic motor system? O a. Cardiac muscle O b. The smooth muscles and glands…

A: Introduction :  The group of central and peripheral nervous system elements that support motor…

Q: In UMN lesions the response of the paralyzed muscles to electrical stimulation is :-a- exaggeratedb-…

A: Motor neurons are the nerve cells that are present in the brain and they control the movement of the…

Q: When the γ-motor neuron discharge to a muscle decreases, it causes :-a- increased muscle spindle…

A: The nervous system plays a major role in transmitting the reflexes from the tissues to the brain.…

Q: How does the neuron activate the muscle fiber? Use key terms below and identify them on a diagram.…

A: Neurons or nerve cells are specialized cells found in the brain, that have the ability to respond to…

Q: The reticulospinal tracts :-a- are inhibitory to muscle toneb- are excitatory to muscle tonec- are…

A: The reticulospinal tracts are also known as anterior or descending reticulospinal tracts. They are…

Q: Motor signals in the ANS always pass through _ (a number. motor neuron (s. before reaching a muscle.…

A: The communication between the entire body and the central nervous system (CNS) is provided by the…

Q: In the knee-jerk reflex, the afferent neurons Select one: a. innervate leg flexor muscles b. are…

A: Knee-jerk reflex can be defined as the sudden kicking movement developed in the lower leg when there…

Q: short term habituation is due to changes in the presyna

A: Habituation is the decrement in the reaction due to the result of continuous stimulation which is…

Q: Which experimental technique would be most helpful in mapping the function of the cells in the…

A: The primary cortex is the area that is just located in front of the central sulcus. It is the area…

Q: e primary motor area Multiple Choice contains more motor neurons for the thighs than the mouth.…

A: Its is area of brain located in precentral gyrus of frontal lobe. It gives rise to motor descending…

Q: Presynaptic inhibition depends upon :-a- augmented release of chemical transmitter from presynaptic…

A: Presynaptic inhibition is the inhibitory inputs to the nerve cells to make them less likely to…

Q: The highly localized nature of stretch reflex is due to :-a- the limited number of interneurons in…

A: The spinal cord reflexes produced by central nervous system (CNS) pathways, which lie entirely…

Q: The central ends of afferents from muscle spindles synapse with all the following types of neurons,…

A: The “muscle spindle” is the important stretch receptor present in the muscle which involved in…

Q: Interruption of spindle discharge from a muscle causes contraction of the muscle to become jerky and…

A: Muscle spindle is small, spindle-shaped sensory receptors located in skeletal muscle tissue and they…

Q: A pin can be pressed against the skin lightly and elicit no response from the pain receptor how…

A: A neuron plays an important role in us .It receives and sends the impulse to the brain or spinal…

Q: Hypertonia of UMN lesions is characterized by :-a- increased inhibitory discharge from the premotor…

A: UMN -upper motor neuron signs, the symptoms include muscle weakness, spasticity, hyperreflexia, and…

Q: What do the two main proprioceptors in muscles respond to? Select one: a. The golgi tendon organ…

A: proprioreceptor: A sensory receptor that responds to position and movement of the body in…

Q: T or F. Motor signals originating in the cortex can't interfere with motor reflex response? T or F.…

A: 1) the correct answer is - TRUE but it has restrictions upto a limit. This statement is neither…

Q: A K FL

A: Nervous system coordinates and controls the activities of the animals such as perceptions, behaviors…

Q: Binding of neurotransmitter to the motor end plate leads to depolarization because the…

A: Events  that occur at neuromuscular junction that results in muscle contraction are :  Action…

Q: Question B)

A: Pain occurs whenever tissues are being damaged, and it causes the individual to react to remove the…

Q: What is the physiological mechanism that produces a quick and efficient skeletal muscle response to…

A: The brain is a mass of nerve tissue present in the head of an organism. The brain is also termed as…

Q: Which of the following would result in no movement (i.e. no activation of the mo cortex)?…

A:

Q: Label on the diagram: 1. Muscle spindle 2. Sensory neuron 3. Soma of sensory neuron 4. Dorsal root…

A: Muscle stretch reflexes are involuntary and automatic muscle contractions in response to a slight…

Q: Figure Ql shows the typical electrical recording of movement artifacts during the resting potential…

A: Neurons are the basic structures and functional units of the nervous system. The axon or the nerve…

Q: When you lift a heavy box, your muscles need to generate a stronger than average contraction. What…

A: Muscle contraction is the mechanism of tightening, shortening, or lengthening of muscles that occurs…

Q: Recruitment of a reflex response is due to :-a- difference in the amount of presynaptic inputs to…

A: A reflex response or action is an instantaneous response to a stimulus. It is an involuntary…

Q: Interruption of γ-motor neuron discharge to a skeletal muscle produces :-a- contraction of the…

A: The nervous system is composed of nerve cells or the neurons that are the most extensively spread…

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.