How does preload in an isolated muscle preparation relate to muscle tone in an intact organism?

Q: Explain the molecular mechanism of muscle contraction.

A: Introduction: The myofibrils are made of parallel bundles of protein microfilaments referred to as…

Q: Illustrate the tension generated during isometric contractions of muscle fiber in response to…

A: Isometric contraction is defined as in which the muscles are activated.  It is the third type of…

Q: Name the system that provides a ready supply of phosphocreatine to muscle cells and describe where…

A: Phosphocreatine It is also known as creatine phosphate. It is a phosphorylated form of creatine…

Q: Describe the general anatomical design of a muscle spindle and discuss its physiological function.

A: Muscle spindles are a special type of sensory receptors (proprioceptors) present inside the muscle…

Q: How does the latchbridge mechanism within smooth muscle cells influence (a) the amount of ATP…

A: Myosin cross-bridges remain connected to the actin by the Latch bridge mechanism for some time after…

Q: Why does force of contraction becomes greater as you deliver stimuli of greater frequencies? What…

A: The muscular system is the organ system in the body with the basic units as muscle fibers. There are…

Q: Describe the role of stretch receptors in skeletal muscles?

A: Skeletal muscles are voluntary muscles present in the body that are responsible for causing…

Q: The single-fiber twitch experiments shown here were generated by stimulating the muscle cell…

A: When a muscle is triggered by a single vibration, an action potential is generated that causes the…

Q: Explain in detail how the of relaxion towards Smooth muscle contraction is done by the antagonsists…

A: Body organs move mechanically thanks to the process of muscular relaxation and contraction. The…

Q: How do Golgi tendon organs monitor muscle tension?

A: BASIC INFORMATION  MUSCLE It is a type of soft tissue which are found in most of the animals. The…

Q: What is the function of myosin light-chain kinase in smooth muscle?

A: The muscular framework is an organ framework comprising of skeletal, smooth and heart muscles. It…

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: Shown below are changes that occur in skeletal muscle during vigorous physical activity.  For each…

A: Answer 1:  ↓ Po2 - decreased HbO2 saturation, decreased free O2

Q: What Is the Molecular Mechanism of MuscleContraction?

A: Muscle contraction occurs when there is the activation of shortening or tightening of muscles by the…

Q: What is the Control of Muscle Tension?

A: The formation of actin-myosin cross-bridges is triggered by neural control, resulting in sarcomere…

Q: The motor unit firing patterns are measured in a human hand muscle using an electromyography (EMG)…

A: The EMG pattern observed as the individual voluntarily attempts to make a low-level force of…

Q: What evidence supports a sliding filament-cross-bridge mechanism of contraction in smooth muscle?,…

A: The evidance for sliding filament cross bridge mechanism  is inferential  and derived from…

Q: Explain how optimal skeletal muscle force (high muscle tension) can be achieved during a high…

A: Skeletal muscle is one of the major muscles in the body which is regulated by somatic nervous…

Q: List the four primary signal transduction pathways in skeletal muscle.

A: Signal transduction is defined as the ability of a cell to change behaviour in response to a…

Q: Explain the intracellular mechansim of smooth muscle relaxation of agaonist such as mepyrimine and…

A: Agonists like mepyramine and atropine relax the smooth muscle by activating certain intracellular…

Q: Give typing answer with explanation and conclusion to all parts How does BMI and muscle size affect…

A: We are investigating the connection between BMI, muscle size, and muscle activation during…

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: When is ATP used in the muscle contraction process (called ATP hydrolysis)?

A: The muscle contains muscle fiber which is filled with the sarcomere present in the stranded form.…

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: When an action potential runs down the surface of the sarcolemma, the muscle doesn't immediately…

A: Muscles  play an important part in locomotion and movement. They are derived from mesodermal layer…

Q: Define maximal threshold. What would happen to contraction if stimulus is increased beyond the…

A: The threshold stimulus is the minimum strength required for a stimulus to start a muscular…

Q: a sample of muscle obtained from an experimental animal is bathed in a solution containing elements…

A: The human body is made up of 4 types of essential/fundamental tissue- Nervous tissue, epithelial…

Q: Why does muscle CAP Amp for both the normal Ringer's solution and Ringer's solution with Neostigmine…

A: Introduction :- A stimulus is any physical or chemical signal that elicits a response from an…

Q: Which of these events occurs during the team phase, just when a muscle has been stimulated? a) Ca2…

A: Muscle stimulation The muscle contraction is stimulated by the action potential that traveled along…

Q: During resistance exercise, three factors support muscle hypertrophy they include the following with…

A: Resistance exercises involve training to improve muscle strength by making muscles work against an…

Q: Match the following regarding muscle contractions: The final chemical messenger and "trigger" for…

A: The neuron is the part of nervous system. It is responsible for transmitting the message in the form…

Q: First, explain how resting membrane potential is established in terms of ion concentration and…

A: The variation in the electric potential of the interior cellular component and extracellular matrix…

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: Explain the intracellular mechansim of smooth muscle relaxation of agaonist such as mepyrimine and…

A: There are a few important points : Skeletal muscles will be attached to bones by tendons composed…

Q: What is a pathologic fracture

A: We know that the Skeletal system consists of bones, tendons, ligaments, and connective tissues that…

Q: Acetylcholinesterase is an important molecule in the engine end plate to share: a) stimulates…

A: Introduction:  Acetylcholinesterase is primary cholinesterase in body. It is also known as AChE or…

Q: When a muscle fiber is stimulated with repeated stimuli, the contraction force is summed due to: a)…

A: INTRODUCTION Summation is that the . occurrence of additional twitch contractions before the…

Q: What is the role of calcium in muscle contractions? Multiple Choice   a) To spread the action…

A: Muscle contraction It is the activation of tension-generating regions in the muscle fibers. It…

Q: Which of the following statements is true about the control of muscle glycogen phosphorylase? a) It…

A: Introduction: Glycogen phosphorylase is a key enzyme that takes part in the first step of…