QUESTION 41 As ATP binds to the myosin head at the beginning of a muscle contraction cycle, the myosin head immediately_. detaches from actin initiates a weak bond to actin develops tension swivels

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: question 3

A: 1. With age the collagen increases in the tissues. Collagen is stiff as compared to muscles.

Q: QUESTION 5 The stimulus that usually triggers blood clotting is: O A drop in blood pressure…

A: The process of transformation of blood into gel like substance outside the blood vessels is known as…

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: Short term facilitation may be due to: Increases in the amount of Na that enters the cell Short term…

A: Neural facilitation, also known as STF (Short term facilitation) is a phenomenon in neuroscience in…

Q: If a skeletal muscle is no longer able to make enough ATP, then: There will be low levels of…

A: ATP is essential for muscle contraction. When ATP is lacking, it affects the cross-bridge cycling…

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: The peak rate at which a mammal can produce ATP by aerobic catabolism is known as aerobic capacity O…

A: Catabolism is defined as the enzyme-catalyzed reaction chains, which are used to break down or…

Q: The ____ detect changes in muscle length; the _____ signal changes in muscle tension     A. Golgi…

A: The sliding filament theory is given for explaining the mechanism of contraction and relaxation in…

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: thus, clonal expansion is The HIV attack the O Helper T cell / inhibited O Regulatory T cells /…

A: Answer :- Option (A) is correct. - Helper T cell / inhibited.

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: Flatworms (Phylum Platyhelminthes)

A:

Q: In a contractile unit of muscle, "thin" filaments are composed of А. O A. calcium. O B. actin. OC.…

A: Muscle contraction leads to shorting the length of muscle. Muscle contraction implies that movement…

Q: Question 2 of 16 The relatively light portion of the A band of skeletal muscle Select the correct…

A: Skeletal muscle- Skeletal muscle forms about 40-50% of body mass and is responsible for movement and…

Q: The part of the muscle that is enclosed in perimyskum. The part of a muscle fiber that aids in…

A: Hello you have asked multiple subparts questions. We will be able to answer only first three. For…

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 6 A muscle organ shortens during: eccentric contraction O isometric contraction O…

A: According to our guidelines we can answer only the first three supbarts of a question. So, upload…

Q: What occurs when the sarcomere length of skeletal muscle is reduced beyond the length w optimum…

A: Skeletal muscle contains connective tissue surrounding the muscle fibers and have their blood supply…

Q: Place the following anterior forearm muscles in order, from lateral to medial 1. Palmaris longus 2.…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: QUESTION 8 A large, multinucleated cell that resorbs (destroys) bone matrix is called A. An…

A: The question is asking to identify the type of cell that is large, multinucleated, and responsible…

Q: Which of these processes need ATP most? O Detachment of myosin head O Release of calcium O None of…

A: Contraction of muscles is controlled by two important proteins, actin and myosin.  In muscle cells,…

Q: Adenylyl cyclase activity will increase in response to the binding of _ adenosine triphosphate…

A: The enzymes that is involved in the conversion of ATP to cyclic AMP (cAMP) and pyrophosphate is…

Q: QUESTION 5 If calcium ions are removed from the fluid surrounding a pre-synaptic neuron, then the…

A: Neurons are the components of the nervous system that are responsible for the generation 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: Acetylcholinesterase: 1. OProduces acetylcholine. 2. Ols the acetylcholine receptor in muscle…

A: Nerves communicate with one another and with muscle cells by using neurotransmitters. These are…

Q: Question 7 Place the events involved in generating an action potential in the order in which they…

A: Neurons are ths structural and functional unit of the nervous system. They help to transmit…

Q: Question 3 (1 point) An enables an action, while the ___ opposes and reverses it. --- agonist;…

A: Various mechanisms in the body facilities the action of other mechanisms or the biochemical…

Q: A. Toadfish Fibers, 16°C Force [Free Calcium] 0.0 W 0.2 0.6 Tim Toadfish are fish that can produce…

A: The muscle contraction is referred to as a tetanus if the frequency of action potentials produced…

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: Identify the molecule which binds calcium ions after they enter the synaptic bouton via VG Ca++…

A: Calcium along with Troponin, Tropomyosin, Myosin brings about muscle contraction and hence is not an…

Q: QUESTION 15 What section of a sarcomere does not shorten during muscle contraction? Al Al Z disk…

A: INTRODUCTION Sarcomere It is a part of a striated muscle, which is a functional unit and works in…

Q: "When a muscle develops increased tension, but does not shorten, it is said to exhibit" O isotonic…

A: Muscle contraction is the development of tension in the muscle fibers. It can be described with two…

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: In smooth muscle fibers, the thin filaments attach to structures called functionally similar to Z…

A: Muscular tissue is made up of long cells of muscle fibers. It has contractile proteins that are…

Q: QUESTION 13 As your body becomes cold cells in your skin determine the change and send a signal to…

A: The objective of the question is to identify the role of muscles and blood vessels in the body's…

Q: Question 28 After the depolarization phase of an action potential, the resting potential is restored…

A: The neurons have the capability to generate and transmit electrical impulses in our body. These…

Q: QUESTION 12 As your body becomes cold cells in your skin determine the change and send a signal to…

A: The question is asking us to identify the role of the hypothalamus in the body's response to cold…

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: QUESTION 10 When an action potential depolarizes the axon terminal, opening of causes O Ligand-gated…

A: The transmission of nerve impulse from one neuron to the next neuron is known as synaptic…