What signal does the IIA afferent send? It signals the alpha motor neuron to contract the extrafusal muscle fibers

Q: In your own words, describe the main events occurring between the arrivalof an action potential at a…

A: The chemical synapse that favors the transmission of the signal from the motor neurons to the muscle…

Q: Draw a muscle spindle surrounded by a few extrafusal fibers. Indicate the location of primary and…

A: Muscle is contractile tissue clustered together to achieve greater productivity in organized…

Q: depolarization of the transverse tubules (T-tubules) promote

A: Every cell in the body has a cell membrane which separate it from the external environment of the…

Q: Why does Na+ diffuse into the muscle cell after the AChreceptor is activated?

A: Acetylcholine is a principal neurotransmitter that helps in the conduction of nerve impulses within…

Q: In what ways does the neural control of smooth muscle activitydiffer from that of skeletal muscle?

A: Muscles are contractile tissues grouped and coordinated in function. Three groups of muscles present…

Q: View the University of Michigan WebScope at…

A: To find: With what structures in a skeletal muscle are the endoneurium, perineurium, and epineurium…

Q: Discuss the similarities and differences by which Ca2+ activity is involved in initiating muscle…

A: "Muscles" perform various functions as movement, which is the fundamental purpose of muscles is to…

Q: Motor neurons release what type of neurotransmitter onto the motor end plate of skeletal muscles?…

A: Motor neurons of the spinal rope are essential for the central nervous system (CNS) and interface…

Q: *When dynamic y-motor neurons are activated at the same time as a-motor neurons to muscle,

A: When dynamic y—motor neurons are activated at the same time as a—motor neurons to muscle, a prompt…

Q: Explain how it makes sense physiologically that the last fibers to be recruited to contract are the…

A: Fatigue is a term used to describe an overall feeling of tiredness or lack of energy. It isn’t the…

Q: Which of the conditions would result in the greatest action potential frequency in afferent neurons…

A: An action potential in neurons happens when a neuron transmits information through the axon to other…

Q: How does the activation of vertebrate skeletal muscle differ from the activation of arthropod muscle…

A: Arthropods are lower animals and their complexity is not profound as compare to the higher animals.…

Q: Muscle spindles are the sensory receptors that monitor the length of skeletal muscles. When the…

A: The muscles are involved in movements happening in an organism. These movements can be voluntary or…

Q: If a single twitch of a skeletal muscle fiber lasts 40 msec, what action potential stimulation…

A: In human physiology, skeletal muscle is defined as the vital organ of muscular system which is also…

Q: Draw a muscle spindle within a muscle, labeling the spindle, intrafusal and extra-futsal muscle…

A: Muscle is a specialized tissue of mesodermal origin. About 40-50% of the bodyweight of a human adult…

Q: Put these events that occur in skeletal muscle in the correct chronological sequence: 1. Activation…

A: The membrane potential on the T-tubule membrane is sensed by a protein called the dihydropyridine…

Q: Modified muscle fibers serving primarily to detect stretch are called

A: We know that The proprioceptive sensation belongs to the class of general senses. The proprioceptors…

Q: Discharge from muscle spindles could be increased by all the following, except :-a- increased…

A: Muscle tissue is soft tissues that provide ability to contract. Cardiac muscle, skeletal muscle, and…

Q: 41- Gamma motor neurons: a- Causes contraction of the equatorial region of an intrafusal fiber b-…

A: The mechanism of gamma motor neurons helps in regulating muscle length and tone.

Q: Which of the following is correct about muscle spindles?

A: Sensory receptors are specialised cells or multicellular structures that sense changes in both the…

Q: If ligand-gated K+ channels were to open in an unstimulated muscle fiber,how would this affect the…

A: The ligand-gated channels are those channels that open in response to the ligand which could be…

Q: Any stimulus above a maximal stimulus will elicit

A: Any stimulus above a maximal stimulus will elicit the same maximal response. Therefore, OPTION 4 -…

Q: How can a number of smooth muscle cells be influenced by neurotransmitters from a single neuron?

A: Chemical messengers in the body are known as neurotransmitters. It is their responsibility to send…

Q: A motor unit associated with the stimulation of skeletal muscle is designated as a 1:8 motor unit.…

A: A motor unit is made up of a motor neuron and the skeletal muscle fibres innervated by that motor…

Q: Arrange the steps of muscle innervation and contraction in response to touching a hot plate.…

A: Sensory neurons(afferent neurons) are defined as the type of nerve cells where they get activated…

Q: the structures in the image below. Complete the table to describe the basic structure of a skeletal…

A: A Tendon:  tendon is a fibrous connective tissue which attaches muscle to bone. B Epimysium:  is the…

Q: Which statement is false? O The muscle spindle forms a monosynaptic connection with the alpha motor…

A: A muscle spindle consists of various different  muscle fibers (intrafusal fibers) that are…

Q: Skeletal muscle is described as striated. What are the lighter, thinner stripes noted under the…

A: The lighter, thinner stripes noted under the microscope are actin. Under a microscope, the thick and…

Q: 38- Which of the following is not a characteristic of the muscle spindles: a- Encapsulated…

A: Muscle spindles: it is belongs to proprioceptors.

Q: Put the following events of excitation-contraction coupling in the order in which they occur. 1.…

A: The term excitation-contraction coupling (ECC), first coined by Alecxander sandow in 1952, describes…

Q: How are ion channels affected by receptors that stimulatesmooth muscle contractions? That inhibit…

A: Due to change in membrane potential muscle contraction occur.

Q: You cut the axon of a single motor neuron innervating the biceps muscle. Which of the following is…

A: Motor neurons, often referred to as efferent neurons are the type of neurons responsible for…

Q: Using pyramidal motor tract as a template, describe the voluntary control of skeletal muscles being…

A: Pyramidal tracts consist of the corticospinal tract and corticobulbar tract.  The tracts are…

Q: Label the structure of the muscle fiber

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

Q: What would happen without input from gamma motor neurons? A) Information about velocity would…

A: Intrafusal fibers are specialized muscle fibers. They are found in the muscle spindles. Muscle…

Q: Match each numbered item with the most closely related lettereditem.Challenge Yourself1. motor…

A: The nervous system is the control center of the body. It consists of the brain, spinal cord, nerves…

Q: Which type of proprioreceptor is sensitive to changes in both muscle length and the speed of muscle…

A: Introduction  Isometric: A muscular contraction in which the muscle length remains constant.…

Q: Define Type I vs Type IIa or IIx fibers

A: Skeletal muscles are comprised of individual muscle fibers. Also, similar to muscles themselves, not…

Q: Choose the type of information that the soft organ smooth muscle first order neuron are sending to…

A: Introduction: An instantaneous and involuntary action of movement responding to a stimulus is…

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: How is the muscular contraction stopped (i.e.: how does a muscle relax after contraction)? 1. The…

A: Muscle Contraction is triggered when an action potential travels along the nerves to the muscles.…

Q: Discuss the similarities and differences by which Ca2+ activity is involved in initiating muscle…

A: "Muscles" perform various functions as movement, which is the fundamental purpose of muscles is to…

Q: Put these events that occur in skeletal muscle in the correct chronological sequence: 1. Opening of…

A: Muscle contraction is a major phenomenon associated with the functioning of the myofibril occurring…

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: 1. What are an afferent neuron and efferent neuron? What are efferent components of the facial nerve…

A: The facial nerve is a cranial nerve that controls the muscles of facial expression. It has afferent…