Question 11 In a resting muscle, the active site on G-actin is blocked by which part of the muscle fiber? myosin O troponin nebulin o tropomyosin

Q: QUESTION 10 Endurance training increase the number of: O slow fibers, which are fatigue-resistant O…

A: Muscle fibres can be defined as the muscle cells that are functionally accountable for controlling…

Q: What is the molecular explanation for the observation that the I band appears to shorten in a muscle…

A: The basic contractile unit of muscle fibre is the sarcomere. Each sarcomere is made up of two…

Q: When an individual sarcomere undergo contraction, which of the following happens? H band and I band…

A: A sarcomere is the basic contractile unit of muscle fiber. Each sarcomere is composed of two main…

Q: Question 8 The major structural component of the exoskeletons of invertebrates is composed of…

A: The monosaccharides joints together to form polysaccharides. Different polysaccharides are present…

Q: motor protein(s) that can carry vesicles along microtubules?

A: Motor proteins -The last element required for the vesicle transport system is the motor protein.…

Q: QUESTION 5 Which of the following is NOT true of intermediate filaments?   A They provide…

A: A cell is the basic unit of life.  All living creatures are made up of cells, ranging from…

Q: What type of ion current could have produced the membrane potential in E? -40 -50 - -60- D E F -70-…

A: Membrane potential is defined as the electric potential difference across the membrane of a cell…

Q: Considering these events, what is the right sequence in muscle contraction? i. Ca2+ released from…

A: Muscles are the connective tissues that are involved in the movement by their contraction and…

Q: QUESTION 10 Which of the following is not a phase of muscle contraction? O A. Excitation O B.…

A: The question is asking us to identify which of the given options is not a phase of muscle…

Q: Question 30 How does muscles stabilize the skeletal system? Muscles... ...create torques at skeletal…

A: Muscles are attached to bones via tendons & are responsible for producing movement and…

Q: Which of the following statements is not correct? +30! -F Membrane Potential (mV) H D. .B -70- A C…

A: The picture is showing the action potential curve. The action potential is generated on receiving…

Q: OA. The myogenic response is an extrinsic mechanism that regulates blood flow in response to changes…

A: Myogenic response is the mechanism by which arteries and arteriole react with the increase or…

Q: Which one ot the following statements is FALSE? Oa ADP is often one of the products of a reaction…

A: Protein kinases are enzymes that regulates biological proteins by phosphorylation with ATP. IT…

Q: You are in charge of generating a scaffold for use in tissue engineering applications that behaves…

A: Scaffold for tissue engineering are the support structure designed to facilitate cellular growth and…

Q: Question 41 Which of the following is true of Gap Junctions in cardiac mucsle. OA. Pairs of…

A: Gap junctions in the cardiovascular muscle are framed by connexins, which are a group of…

Q: QUESTION 14 Excitation-contraction coupling refers to OA. The action potential of a neuron…

A: The objective of the question is to identify the correct definition of the term…

Q: QUESTION 4 Thin filaments are composed of O A. Calcium; Sodium OB. Myosin; actin O C. Sodium;…

A: Thin filaments in muscle fibers are composed of actin, which is a globular protein that forms long…

Q: Question 37 The Sarcoplasmic Reticulum is: OA. The basic contractile unit in skeletal muscle O B.…

A: Sarcoplasmic reticulum It refers to a membrane-bound structure constituting a network of tubules…

Q: What process best characterizesCa concentration) into the endoplasmic reticulum (high Ca 2+ movement…

A: A concentration gradient is set up when the concentration of the ions on both sides of the membrane…

Q: A transgenic mouse was produced which lacks a protein that is required to assemble tight junctions…

A: Cell junctions These are the connections present between the two cells or the cell and plasma…

Q: None of the other answers. O Contract more quickly O Contain less myoglobin ESTION 4 muscle, when…

A: The two types of skeletal muscle fibers are slow-twitch (type I) and fast-twitch (type II). Twitch”…

Q: Question 4 of 16 The physiologic event that takes place at the sarcolemma of a skeletal muscle cell…

A: The skeletal muscles are under the control of central nervous system that regulates the contraction…

Q: QUESTION 3 In a contracted muscle, sarcomeres are ○ A stretched; also stretched O B. narrowed; the…

A: The objective of the question is to understand the changes in the sarcomeres, the basic units of…

Q: Question 8 Your body contains various types of connective tissue, each having a specific function.…

A: Tissue is a part of structural organization of body which is composed of numerous cells Types of…

Q: Alter death, calcium pumps no longer fünction and the calcium ion concentration of muscle fiber…

A: * After death of an animal or organism the calcium pump stops hence calcium should not be pumped and…

Q: myosin

A: Various cellular activities rely on the regulation of actin dynamics. Actin dynamics and…

Q: What is the basic functional unit of a myofibril? a. endomysium b. sarcomere c. muscle fiber d. gap…

A: Muscles are specialized tissues which play an important role in body movement along with bones. They…

Q: Skeletal muscle contains several nutrients and oxidation- promoting chemicals which allow it to work…

A: The muscular system helps to regulate the movements of body and internal organs. Muscle tissue made…

Q: All of the following statements are correct EXCEPT a. Prokaryotic cells do not have a cytoskeleton.…

A: The cytoskeleton are a system of filaments or protein fibres that are present in the cytoplasm that…

Q: Which of the following statements is false concerning the motor protein families of kinesins and…

A: Kinesins and dyneins are molecular motor proteins responsible for intracellular transport in cells.…

Q: Question 1 In a NMJ, what happens to the sarcolemma when acetylcholine is released into the synpatic…

A: A neuromuscular junction or a myoneural junction is a synapse between the terminal end of a motor…

Q: When a cell membrane potential shifts from -70mV to -90mV we say the membrane has:

A: Neurons typically show a resting membrane potential at -70 mV. This resting potential is disturbed…

Q: Question 3 of 20 く -/1 The skeletal muscle that separates the two cavities shown by the arrows is…

A: THORAX:-The thoracic cavity, often known as the chest cavity, is the body's second biggest hollow…

Q: All animals with a circulatory system use it for O nutrient transport gas transport

A: Introduction No one can see the many, many millions of cells that make up the body without a…

Q: QUESTION 19 Which of the following is when muscle contraction occurs with a single electrical shock?…

A: The question is asking to identify the type of muscle contraction that occurs when a muscle is…

Q: What do synaptic vesicles of a neuromuscular junction contain?   a serotonin   b sodium   c…

A: A neuromuscular junction is a chemical synapse between a motor neuron and a muscle fiber. It allows…

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.