Which of the following effects result(s) from aging on the muscular system? a. Muscle mass declines. b. Slow-twitch fibers are affected most by aging. c. Fatigue occurs more quickly. d. Increased muscle tone limits stability. e. The gait lengthens and is slower.

Q: The cross bridges of the sarcomere in skeletal muscle are made up of                 A. myelin.…

A: Introduction:-  Muscles are delicate tissue present in most animals . These contain filaments like…

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: Delayed onset muscle soreness (DOMS) is most closely associated with which type of muscle actio a.…

A: It is experienced by many and characterized by pain and stiffness in muscle.

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: 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: Peristalsis is the wavelike, constant, and rhythmic alternating contractions and relaxations of…

A: Peristalsis is the rhythmic movement of the intestinal muscles which results in the movement of food…

Q: Stimulation of a muscle fiber by a motor neuron occurs ata. the neuromuscular junction.b. the…

A: Anatomy and physiology are the branches of biology, anatomy deals with the study of the structure of…

Q: Sherrinton proposed the law of reciprocal innervation in the muslces. Which of the following is the…

A: Reciprocal innervation This refers to the motor neuron activity principle, which explains that when…

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 statement(s) about human neuromuscular innervation is/are true? A. A single spinal motor…

A: A chemical synapse between a motor neuron and a muscle fibre is known as a neuromuscular junction.…

Q: The release of which of the following minerals from muscle cell storage sites stimulates muscle…

A: Sarcoma muscles store calcium in sarcoplasmic reticulum. It gets released when a muscle cell or…

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: Muscles generate heat. Which muscle type is responsible for generating most of the heat in the body?…

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

Q: When muscle fibers are stimulated so frequently they do not have an opportunity to relax, they are…

A: There are two types of skeletal muscle fibers, fast-twitch and slow-twitch, and they each have…

Q: The neurotransmitter that initiates events leading to skeletal muscle contraction is A. creatine…

A: Skeletal muscle can be outlined as the muscles of the body that are voluntary in action. They are…

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 muscle system is responsible for a. producing red blood cells. b. providing a framework. c.…

A: There are various organ systems in an organism that are together responsible for making organisms…

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…