Normal (Flexion) Normal (Extension) Tetanus Motor Motor neuron neuron stimulated; this muscle inhibited; this muscle contracts. relaxes. Motor Motor- neuron stimulated; this muscle contracts. neuron Both muscles contract and inhibited; FIGURE 23.9 this muscle Tetanus and relaxes. Inhibitory Neuron Function arm cannot move. ? How does tetanospasmin cause muscle contraction?

Q: Why do Fast-glycolytic fibers fatigue rapidly?

A: Introduction: The soft tissue present in almost all mammals is the muscles. The muscle cells…

Q: How long can glycolytic catabolism fuel muscle activity?

A: Catabolism can be defined as the type of metabolic activity in which the molecules break into…

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: How is muscle contraction stopped? Which of the following is/are correct?   A) The brain stops…

A: The process of muscle contraction is a sequence of events that are responsible for the contraction…

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: 18) Which of the following is NOT correct statement regarding muscle fatigue? A) Gradual increase in…

A: Hi! Thank you for the questions. As you have posted multiple questions, I will be answering the…

Q: What are Fast-glycolytic fibers?

A: Muscle tissues are made up of muscle fibers that are composed of myofibrils composed of sarcomere…

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: What are the Regulatory Molecules that mediate exercise-induced changes in muscle?

A: Muscle is soft tissue and consists of protein filaments of myosin and actin. These filaments slide…

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: What is the relationship between exercise and muscle

A: In response to various stimuli when the size of the cells increases, the condition is called…

Q: What is the normal end product of anaerobic exercise in muscle?

A: An anaerobic exercise is a form of exercise that uses no oxygen to break down glucose in the body.…

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: Why is adenosine triphosphate (ATP) used for muscle contraction?

A: Muscle contraction is a process in which muscle shortening occurs due to the movement of the actin…

Q: Outline the signal- transduction cascade for glycogen degradation in muscle.

A: Glycogen is stored form of carbohydrates in mammals. Glycogen serves as a fuel during exercise.…

Q: How is smooth muscle contraction affected by the drugs called calcium channel blockers?

A: Calcium ions move in and out of the cell with the help of calcium channels that present in cardiac…

Q: Why is the muscle glycogen higher than normal?

A: Glycogen is considered as the complex form of the carbohydrate, which acts as an energy source.…

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: What are two separate steps or phases of muscle contraction that rely on calcium for proper…

A: Muscle contraction is the tightening and shortening of the muscle. Muscle contraction is an increase…

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: Muscles may become hypoxic during the early stages of exercise, causing lactate to build up. a)…

A: Organic acids, such as lactic acid, are acids that are made up of carbon atoms. In its solid state,…

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…

Q: What might happen to muscle contraction if acetylcholinesterase were added to the preparation?

A: The neuromuscular junction is the space between the neuron and the muscle. This is the junction…

Q: What is the optimum muscle activity to undertake for muscular hypertrophy? Explain deeply

A: Muscle hypertrophy is increase in the size mass of muscle due to its excessive constant use.Muscular…

Q: Why is it possible to get a sustained muscle contraction during tetanus?

A: A tetanic muscle contraction , which is also known as the tetanized state, or tetanus by itself is a…

Q: How long can oxidative catabolism fuel muscle activity?

A: Skeletal muscle, Smooth muscle, and Cardiac muscle are the three types of primary muscles.…

Q: Describe the effects of histamine and NO on smooth muscle activity.

A: Histamine is released in various tissues and maintains immune response, regulates physiological…

Q: What is myerin?

A: In body, there is a need of insulating layer over the nerves to ensure insulation, protection and…

Q: What is molecular basis of muscle fatigue?

A: Introduction :- Muscle fatigue is a sign that your muscles' ability to perform is deteriorating with…