Which of the following statements relating to the factors affecting the force of muscle contraction is false? a. skeletal muscles contract strongest when the muscle fibers are 80-120% their resting length b. low frequency of stimulation generates decreased force c. larger muscle fibers

Q: The following is based on the Seebeck effect: Select one: a. RTDs b. IR thermometers c. Thermistors…

A: Clinical thermometer It is an instrument that is used to measure body temperature and contains…

Q: The mechanism of muscle contraction is best explained by the sliding filament model. According to…

A: Many different forms of cell motions are caused by actin filaments, which are often linked to…

Q: Select one or more: - a. No tension can be generated. b. Both contractile and elastic forces…

A: Stretching helps to keep our muscles flexible, strong, and healthy, and its very much needed for…

Q: When a skeletal muscle cell contracts and the muscle shortens,

A: During muscle contraction, some myosin heads bind to actin (forming crossbridges) while others…

Q: 7. A severe laceration to a wrist completely severed a major muscle tendon. To suture the ends of…

A: The tension or force applied to a muscle when it is stretched without any active contraction is…

Q: Why might multiple, small motor units be advantageous over a single large motor unit?   A. They…

A: Motor units participate in regulation of movement of muscle fibers.

Q: 18. Malathion interferes with the enzyme cholinesterase (found synaptic clefts). When Malathion is…

A: A broad-spectrum insecticide from the chemical family organophosphates used in public recreation…

Q: Which of the following statements about the Ca2+ release channels in the sarcoplasmic reticulum is…

A: The right answer is option b) They are one-tenth the size of the voltage-gated Ca 2+channels. The…

Q: Which of the following statements about movement and locomotion isfalse?a. Terrestrial animals and…

A: The process called movement is the temporary or permanent displacement of the part of the body of a…

Q: When we increased the frequency, why could we see an in increase in the force of contraction? Is it…

A: An action potential can be defined as a rapid increase and decrease in the membrane potential of the…

Q: Which of these events occurs during the lag (latent) phase of musclecontraction?a. cross-bridge…

A: Muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of myosin and…

Q: The function of Ca2+ in skeletal muscle contraction is toa. cause an allosteric change in myosin so…

A: Skeletal muscles are a special type of muscles made up of contractile tissue. They are a type of…

Q: Which of these increases the least as a result of muscle hypertrophy?a. number of sarcomeres d.…

A: Muscle hypertrophy means increase in the size and strength of the muscles. This in turn results in…

Q: To demonstrate muscle fatigue, a student held an 8 lb dumbbell in her hand and abducted her arm…

A: Ans - the correct answer for the above question is- A) Different motor units were contracting while…

Q: Which of the following are involved interaction of myosin and actin? A. interaction between the…

A: Actin and myosin are the microfilaments which are involved in contraction of muscles. The troponin…

Q: Muscular atrophy occurs when: A. A patient lacks the coordination needed to walk normally. B. Muscle…

A: Muscular atrophy refers to the loss of skeletal muscle. The atrophied muscle normally smaller and…

Q: What event causes a troponin-tropomyosin complex to regain its original shape in muscle relaxation?…

A: Muscle contraction is the activation and formation of tension sites with muscle fibres, while muscle…

Q: a. Individual organ a. myofibril b. An individual cel b. muscle c. A bundle of proteins c. fascicle…

A: Introduction: Skeletal muscles are voluntary muscles as their relaxation and contraction are under…

Q: Considering the force of contraction of a skeletal muscle fiber,wave summation occurs because ofa.…

A: Muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of myosin and…

Q: The figure below shows the muscle tension (Y axis) following the application of stimuli to the…

A: The muscular tension (Y axis) after applying stimuli to the muscle fibre is depicted in the picture…

Q: The function of ATP during muscle contraction is toa. cause an allosteric change in myosin so it…

A: ATP(adenosine triphosphate) causes an allosteric change on myosin so it detaches from actin and…

Q: Muscle fibers contractions differ with regard to tension and shortening. When a muscle Fiber begins…

A: Isometric and isoconcentric

Q: The decrease in active force that occurs at lengths longer than the optimal length is caused by: O…

A: According to the question, the decrease in active force that occurs at lengths longer than the…

Q: After employing steady-state endurance training for 6-months, in preparation for marathon, which of…

A: Introduction Steady-state cardio encourages weight loss, increases endurance, and has been linked to…

Q: Which of the following does NOT contribute to muscle fatigue? A. K+ accumulation B. ADP and…

A: Introduction Muscle fatigue is a condition in which muscles loses the ability to perform overtime.…

Q: The intrafusal fibers OA. are of two types, fast twitch and slow twitch. OB. increase in number with…

A: Muscle is a specialized tissue of mesodermal origin. About 40-50% of the bodyweight of a human adult…

Q: The firmness of rigor mortis ___.     A. can be reduced by manipulation of the affected muscles and…

A: Normally the muscles of the body remain in the contracted state until ATP binds to myosin, releasing…

Q: contraction occurs as the length of the muscle increases. O a. Concentric O b. Eccentric O c. Static…

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

Q: You cut the axon of a single motor neuron innervating the biceps muscle. Which of the following is…

A: Motor neurons, often referred to as efferent neurons are the type of neurons responsible for…

Q: The constant state of partial contraction of muscles is called a. muscle atrophy. b. muscle tone. c.…

A: Introduction: Muscle is a contractile tissue responsible for bringing out the movements. Muscles are…

Q: The purpose of transverse tubules is to Select one: a. ensure a supply of glycogen throughout the…

A: Transverse tubules are basically the structures present in the muscles,they are the invaginations or…

Q: When ADP and Pi are bound to myosin in the cross-bridge cycle... (MULTIPLE SELECT) A. There is no…

A: The cross-bridge cycle of muscle contraction is the process in which the actin filament and myosin…

Q: During muscle contraction, binding sites for myosin are uncovered by the movement of A. Tropomysin…

A: A. Tropomyosin   During muscle contraction, the binding sites for myosin on the actin filament are…