a) Describe why the first steps for a low force contraction in both muscles are smaller than the later ones in the context of motor units and force production.

Q: Briefly explain how does cross-bridge formation affect muscle force.

A: During muscle contraction, a force is generated in the muscle. This is termed the muscle force. This…

Q: Describe the relationship between the resting muscle length and the strength of its contraction.

A: Muscles are stretched even at rest i.e. when muscles are not contracting they are actually stretched…

Q: Name three differences between slow-twitch and fast-twitch muscle fibers.

A: A sudden and quick movement of muscles or rather, contraction of muscles is referred to as Twitch.…

Q: Define isometric contraction

A: The contraction of the muscles can be explained by the sliding filament theory. According to sliding…

Q: In 3-4 sentences compare and contrast the various types of muscle contraction and be able to give at…

A: The different types of muscle contractions are :- 1) Isometric contraction- Here the muscle length…

Q: What factors affect muscle contraction during bicep curls. Explain

A: The biceps curl mainly targets the biceps brachii, brachialis and brachioradialis muscles. These…

Q: Describe the muscle composition in a normal active person. How does this compare to athletes…

A: Muscle composition in a typical active person varies based on factors such as genetics, training,…

Q: Trace the action potential from the neuron through the muscle fibers and the key structural…

A: The interaction between thick and thin filaments in the muscle fibre are responsible for the muscle…

Q: How can I describe skeletal muscle contraction using the words "upper motor neuron" and "lower motor…

A: Skeletal muscles represent one of the three types of muscles including smooth muscle and cardiac…

Q: Define delayed-onset muscle soreness (DOMS). Outline the factors that contribute to its development.

A: Delayed-onset muscle soreness: It is defined as a type of muscle pain that usually occurs after the…

Q: Identify the major events of skeletal muscle fiber contraction.

A: The major function of skeletal muscles is to facilitate movements and support the body. They also…

Q: During a maximal attempt, one may experience a burning sensation within the muscles being assessed.…

A: The burning sensation experienced during maximal efforts is often associated with fatigue and while…

Q: Explain what occurs during muscle atrophy and musclehypertrophy.

A: The human muscle system, the human body muscles that regulate the skeletal system, are under…

Q: Explain the types of exercise that require more fast-twitchversus slow-twitch muscle fibers.

A: Skeletal muscles are made up of different types of muscle fibers (cylindrical muscle cell) which…

Q: . What steps might be taken to minimize atrophy of theskeletal muscles in patients confined to bed…

A: The soft tissue-like structure found in the majority of the animals including human beings is known…

Q: The total tension a muscle can develop depends upon two factors. What  are they?

A: Muscle contraction and relaxation helps muscular system to be function properly. When a muscle…

Q: State three or more reasons why muscle twitch strengthcan vary even when stimulus intensity remains…

A: A muscle twitch is also known as muscle fasciculation. It can be defined as the process in which…

Q: State the difference/s of striated myofilament contraction and smooth myofilament contraction.

A: Muscle is a tissue which enables a person to perform the majority of the locomotor tasks. Muscle…

Q: What effect does increasing the frequency of action potentials in askeletal muscle fiber have upon…

A: With alternative arrangements of light and dark band, skeletal muscles are striated muscles. They…

Q: Describe the actions of muscles when they contract, and define the terms agonist and antagonist in…

A: To answer this question we are supposed to know about the anatomy of human body.

Q: State the order of recruitment of muscle fiber types.

A: Muscle fibres contain a single muscle cell. They support to regulate the manual forces within the…

Q: . Explain why it is important for the speed and strength ofheart contractions to be regulated both…

A: The heart can be defined as the muscular organ of the body located posterior to the breastbone, and…

Q: name the major proteins of a muscle fiber and state thefunction of each

A: Tendons attach skeletal muscles to the bone. Numerous bundles which make up the skeletal muscle are…

Q: explain how the shortening velocity can be varied from very fast to very slow even though the load…

A: Muscle contraction will depend upon two types of velocity. The twitch and tetanic. The twitch refers…

Q: Describe four muscle proteins and their functions.

A: We can say that Muscle contraction can be described as the process occurring within the muscle…

Q: Compare and contrast isometric and isotonic muscle contractions. Describe muscle tone.

A: The muscular system is an essential part involved in the movement, protection and support of organs.…

Q: Describe some cause(s) of muscle fatigue and define this term clearly.

A: Animal physiology is the systematic study of the supporting features, roles, and processes of…

Q: If the muscle fiber is stretched to 150% of muscle length and thentechnically stimulated, what would…

A: Muscle contraction is shorting of length of muscle which  lead to locomotion and movement. Most…

Q: What is the main active muscle group across the (i) right knee joint and (ii) right ankle joint…

A: INTRODUCTION Muscles are group of muscle fiber they can contract and relax and they produce force.…

Q: Discuss physiologic muscle hypertrophy and muscle atrophy of disuse.

A: Muscle can be defined as the soft tissue of the body that is associated with the bones and helps in…

Q: Identify the wrappings around a muscle fiber in order from outermost to innermost.

A: Muscle fibers contain a single muscle cell. When various muscle fibers join together, they organize…

Q: Provide the levels of biological organization in a muscle.

A: Muscles are a type of soft tissue that are responsible for movement and the maintenance of posture…

Q: Explain the meaning of a sarcomere and its parts. Compare the contracted and relaxed sarcomere by…

A: The tightening, decreasing, or lengthening of muscles during an activity is known as muscular…

Q: Explain the role of tetanus in normal muscle action.

A: All the sensory activities are controlled and coordinated by the nervous system. The external…

Q: Explain what the zone of overlap is, and how it contributes to muscle contraction (hint: include…

A: We are answering the first part only. For rest of question pls repost.

Q: Describe the processes by which muscles obtain the energy to power contractions.

A: Muscles are tissues of the body that helps in contractions that further aids in movement. These…

Q: Define motor unit and muscle twitch, and describe the events occurring during the three phases of a…

A: Muscle is mainly a soft tissue containing protein filaments with actin & myosin and is…

Q: Differentiate muscle hypertrophy from atrophy and give acause of each.

A: Atrophy It is defined as reduce in size of cells, tissues or organs. Muscle wasting It is…

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.