Muscle fiber contraction and nerve impulse conduction are similar in that both are response.

Q: Muscle contraction can occur when: is it 1,2,3,4? A bands lengthen. myosin filaments shorten.…

A: Muscle is a specialized contractile tissue that is a distinguishing characteristic of animals.…

Q: Provide a possible physiological explanation for the differences between muscle fatigue and nerve…

A: The physiological activities in our body teaches us how our body work and how it responds to the…

Q: Actin is sometimes called the "thick" filament. It splits ATP and is responsible for the "power…

A: The movements of different body parts are attributed to the systemic contraction and relaxation of…

Q: A nerve fiber,together with all of the muscle fibers it innervates, is called amotor unit. A motor…

A: The plasma membrane of a neuron can change its potential from a resting potential to an action…

Q: Skeletal muscle cell(key terms: striated, contracting proteins, contractions, nucleus location) This…

A: Skeletal muscle cells are the cells that help us move and are compartmentalized in the body into…

Q: Explain the following two statements: Muscles can only actively contract; muscle fibers lengthen…

A: The statements "muscles can only actively contract" and "muscle fibers lengthen passively" are…

Q: Define the all-or-none principle.

A: According to All-Or-None principle, When threshold stimulus is applied to a neuron then it will…

Q: Summation in a single muscle fibre means that Select one: a. the fibre increases the frequency of…

A: Introduction Muscle contraction:- It is the activation of tension-generating sites within muscle…

Q: The flushed appearance of skin is due to the hemoglobin in blood. True False

A: Tissue is a part of structural organization of the body which is formed of various cell . Tissue is…

Q: the process of muscle contraction, which of the following steps immediately precedes the influx of…

A: Muscle contraction:-  Is the response  a muscle has to any kind of stimuli where the result is…

Q: Describe how muscle contraction can resist movement rather than cause movement

A: Muscle contractions allow movements mainly the most common function of muscles. The contractions of…

Q: Smooth muscle cells lack transverse tubules. True or False True False

A: Muscles constitute a set of specialized tissues which play an important role in body movements along…

Q: In your own words describe how acetylcholine ,calcium,and ATP are involved in the process of muscle…

A: Muscle contraction is a process where tension-generating sites in the muscles fibers are activated…

Q: True or False An organism which has attained homeostasis is at equilibrium with its external…

A: Homeostasis Homeostasis is defined as the ability of an organism to maintain and adjust its internal…

Q: Describe the events by which depolarization of a smooth muscle cell results in contraction and…

A: Smooth muscle is a kind of muscle that is used by various systems to apply pressure on organs and…

Q: Compare the inner layer of smooth muscle with circumferentially running muscle cells,to the outer…

A: Internal soft organs have visceral smooth muscle in their walls (viscera). Muscle cells are joined…

Q: In cardiac muscle, which ion serves both to depolarize the cells and as the essential link to…

A: correct amswer = b-Ca+ The shape of voltage-gated calcium channels changes as a muscle cell is…

Q: Discuss the following statement: “The basal lam-ina of muscle fibers serves as a molecular bulletin…

A: Muscle fibres are the contractile cells which are present in the muscles. These are responsible for…

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: Muscle contraction is not the only process controlled in temperature-regulating reflexes. True or…

A: Muscle contraction is considered as the process, in which tension develops in the site present in…

Q: Describe in details the biochemical and mechanochemical series of events that enables motor neurons…

A: Muscle contraction means activation of tension-generating sites within our muscle cells and the…

Q: In the process called "excitation-contraction coupling" (the events that lead up to a muscle cell's…

A: When an organism is dead, there occurs stiffening of muscles. This is termed as Rigor mortis. This…

Q: When electrically stimulating a skeletal muscle and measuring the force of muscle contraction, which…

A: A skeletal muscle needs an action potential to be trigger contraction of the muscle fibers. The…

Q: On a microscopic scale, explain how muscle fibers move in order to make a muscle shorter? Explain…

A: The cellular respiration provides energy (ATP) for the muscle contraction and The nervous system…

Q: A smooth, sustained contraction from rapid stimulation of skeletal muscle fibers is called

A: TISSUE: These tissues differ from others in that they have the ability to contract and relax, which…

Q: Compare the three muscle fiber types and their influence on contraction

A: The muscular system is made up of specialized tissues called muscle fibers. These muscle fibers…

Q: Which of the following step(s) about the excitation of skeletal muscle is/are incorrect?   1.…

A: Muscle contraction is an example of a complex biological process. The excitation of skeletal muscle…

Q: Both the withdrawal reflex and the Golgi tendon reflex involve sensory signals that ultimately…

A: The reflex arcs can be of two types called the somatic reflex arc and the autonomic reflex arc. The…

Q: explain why the force of a muscle contraction dependson the muscle’s length prior to stimulation.

A: The length-tension relationship of our human muscle states that specifically, the isometric tension…

Q: Define the three classes of motor units and their role in muscle innervation

A: A motor unit is the basic functional unit of the muscular system. It consists of a motor neuron and…

Q: Muscles relaxatiom occurs when acetylcholine is cleaved from its receptors ,calcium is pulled back…

A: The muscle tissue present in the human body is primarily responsible for the movement in the body.…

Q: Compare the (i) contraction, (ii) excitation-contraction coupling in smooth muscle, cardiac and…

A: Introduction The muscular system is an organ system consisting of skeletal, smooth, and cardiac…

Q: High blood K+ concentrations cause depolarization of the restingmembrane potential. Predict and…

A: Potassium is an important electrolyte needed for various functions in the body like muscle movement…

Q: Acetylcholinesterase is the enzyme that breaks down and inactivates acetylcholine. Some nerve gases…

A: Nerve gas binds to acetylcholinesterase enzyme but only at 1 site. Nerve gas has a phosphorus group…

Q: Smooth muscle has actin/myosin, why is it not striated? (consider what striation can provided)

A: Muscles are specialized tissues in the body that have the ability to contract and relax, allowing…

Q: Lawrence Cherono from Kenya won the 2011 Boston Marathon. He probably has a in the muscle of his…

A: The skeletal muscle fibers are made up of two types of fibers namely the slow-twitch Type 1 fibers…

Q: Define what the NMJ is and why it's important for muscle contraction. Explain in short the process…

A: Muscle contraction refers to the activation of muscle fibers that results in the generation of…

Q: In what ways does the neural control of smooth muscle activity differ from that of skeletal muscle

A: Skeletal muscle and smooth muscle are two types of muscles in the body with distinct roles and…

Q: Distinguish between skeletal, smooth, and cardiac muscle in terms of location and whether they have…

A: Introduction:- A tissue is defined as the group of cells that have similiar structure and functions…

Q: muscle cannot respond to appropriate nerve stimuli. Which muscle characteristic is impaired?…

A: Muscle is  considered as a contractile tissue that make up the system to qoek it qith the…

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: What effect does increasing the frequency of action potentials in a skeletal-muscle fiber have upon…

A: Skeletal muscles -- are the muscle which are in our voulantry control These  are attached to the…

Q: Which type of muscle fiber uses large amounts of oxygen and has rich supplies of myoglobin? slow…

A: On the basis of morphology and physiology muscle fibres can be classified as- type I fibers…

Q: The amount of resistance overcome in proportion to the amount of effort expended is known as:  an…

A: The movement in an organism can be categorised into two types namely- non muscular and muscular…