Post-rotational alteration of muscle tone :-a- results from altered pattern of macular dischargeb- maintains equilibrium during this phasec- results from increased discharge from the SCCs on both sidesd- results from increased discharge from the SCCs on opposite side of rotation.

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: A reflex action :-a- is a fast brief response to a sensory stimulusb- is involved in regulation of…

A: The nervous system is an intricate network of neurons that allows us to respond to sensory…

Q: Which of the following would result in higher force production at lower action potential frequencies…

A: How we produced higher force at lower action potential frequency.

Q: Type I fibers are only recruited in light repetitive movements like postural adjustment and slow…

A: The muscle fibres have a specialised structure that helps in contraction. Usually the actin and…

Q: Antigarvity muscles maintain stretch reflex for prolonged periods withoutfatigue, because :-a- they…

A: The stretch reflex is a muscle contraction in response to stretching within the muscle. The major…

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: Observing an EMG signal at different grip strengths shows that ____ motor units are firing at ____…

A: EMG is electromyography that indicates the study of muscle electrical signaling.

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

A: A reflex action known as tendon reflex is produced if the tendon located below the knee is tapped.…

Q: The role of γ-motor neurons in regulation of equilibrium is achieved   by :-a- initiating…

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

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: If a muscle has the word hallucis in its name, it must cause movement of the -…

A: Muscles are the part of skeletal system in animals and humans. Muscle tissue is made up of Myocytes…

Q: Asymmetrical bilateral discharge from the SCCs occurs :-a- on exposure to a linear movementb- during…

A: The nervous system is one of the vital systems of a body. It is a system of nerves which carry…

Q: Match the word/term with the appropriate characteristic fast fibers/ Type Ilb or Ilx fibers fast to…

A: Introduction :- Individual muscle fibres make up skeletal muscles. Muscle fibres, like muscles…

Q: The crista ampullaris is sensitive to :-a- sound vibrationsb- force of gravityc- linear…

A: Crista ampullaris is present in the inner ear. It is present in the ampulla of the semicircular…

Q: In flexor withdrawal reflexes contraction of flexor muscles is associated with reciprocal…

A: Withdrawal reflex is a postsynaptic occurring in response to a noxious stimuli.  Characterised by…

Q: Hello. Why does a person with muscles that have a higher percentage of slow fibers have greater…

A: Muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of actin and…

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: In general, fast-twitch fibers generate less power than slow-twitch fibers. A. True B. False

A: People have two general types of skeletal muscle fibers: slow-twitch (type I) and fast-twitch (type…

Q: Fill in the blank:  The P wave corresponds to depolarization of the muscle fibers of the…

A: A human heart is 4 chambered mascular organ. Its present inside chest and its similar to a fist in…

Q: Flexor reflexes do not involve :-a- flexor musclesb- extensor musclesc- reciprocal inhibitiond-…

A: Reflexes are involuntary instantaneous movements in response to a particular stimulus. Reflex does…

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: Label the patellar reflex arc and reciprocal innervation in Figure .

A: Sensory organ Sensory neuron Interneuron  Cell bodies of motor neuron Motor neuron Motor neuron…

Q: C. The single muscle twitch. Duration of latent period O 012 = % of total twitch time sec % Duration…

A: Twitch:- Muscle contractions, also known as fasciculations, are small, involuntary muscle…

Q: The nuclear-bag fibers of muscle spindles are innervated by :-a- Aγ nerve fibersb- Aβ nerve fibersc-…

A: The muscle spindles are stretch receptors inside the body of a muscle. The reflexes are immediate or…

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: Central delay of reflex actions :-a- is due to presence of inhibitory interneurons in the reflex…

A: Reflex actions are involuntary and instantaneous movements in response to the stimulus. They are…

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: 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: Stretching a skeletal muscle can depolarize sensory afferents that project into the spinal cord and…

A: Introduction : Muscles are the soft tissue with ability to contract hence help in movement of body…

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: Increased sensory discharge from muscle spindles :-a- decreases muscle toneb- increases muscle…

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

Q: Lower motor neuron lesions cause all the following, except :-a- decreased number of transmitter…

A: Lesion basically refers to the damage. Lower motor neuron lesion as the term suggests is the lesion/…

Q: The disease poliomyelitis (po′le-o-mi′˘e-li′tis) destroys motor neurons, causingloss of muscle…

A: Poliomyelitis is caused by a virus that may cause paralysis in the person. Poliomyelitis can be…

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: After-discharge of reflex responses :-a- increase the magnitude of the reflex responsesb- delays the…

A: Neurons are the fundamental unit of brain and nervous system. They are electrically excitable cells…

Q: Describe how an action potential triggers muscle contraction. Know the specific molecules involved,…

A: A muscle contraction means a reduction in the length of the muscle or an increase in tension. A…

Q: Identify the indicated part of the reflex arc model. NERV OUS S YSTEM reflex arc motor neuron…

A: To solve this question we must understand what is reflex.A reflex is an involuntary , automatic…

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: Inverse stretch reflex :-a- increases the possibility of avulsion of the excessively stretched…

A: The inverse stretch reflex also is known as Golgi tendon reflex refers to the self-induced…

Q: Clonus :-a- is a sign of decreased supraspinal facilitationb- initiated by briefly stretching the…

A: The nervous system is the system of nerves that are spread in every part of the human body. These…

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: Tendon jerks are clinically examined to asses :-a- integrity of muscle spindlesb- integrity of…

A: A reflex is an involuntary and sudden movement in response to a stimulus. It is an autonomic…

Q: Explain how more than one smooth muscle cell can be influenced by an action potential generated in…

A: Explain how more than one smooth muscle cell can be influenced by an action potential generated in…

Q: Shortly describe how action potentials travel to the muscles

A: The contraction of skeletal muscle takes place when we stimulate it voluntarily. The electrical…

Q: Question B)

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

Q: Spasticity of the paralyzed muscles in UMN lesions is associated with :-a- inhibition of tendon…

A: The upper motor neuron can be defined as the lesion of the neural pathway that lies above the…

Q: The shortest reflex time is recorded with :-a- a flexor withdrawal reflexb-an inverse stretch…

A: Reflex is a spontaneous involuntary response to the stimulus. Reflex arc is a pathway that carries…

Q: Fatigue of reflexes :-a- develops gradually and recovers rapidlyb- develops rapidly and recovers…

A: The involuntary and automatic response for a stimulus is called a reflex and the pathway is called a…

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.