During low intensity, long-duration exercise (long-distance running, for example), fatigue is NOT believed to be caused by: 30. A. The declining levels of muscle glycogen and blood glucose levels. B. The loss of extracellular electrolytes through sweating. C. The partial fatigue of neurons within the Cerebrum. D. The decrease in interstitial temperature observed in active muscle fibers.

Q: 38. Which of the following (are) is true when 50% of the motor units are stimulated?   A. the…

A: A motor unit is composed of a Motor neuron and the skeletal muscle fibers supplied (innervated) by…

Q: When a higher voltage is applied to the skeletal muscle, the force of contraction _____ and…

A: Skeletal muscle fibres has the ability to cause muscle contraction if it encounters an appropriate…

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: 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: Which of the following changes in skeletal muscles is associatedwith aging?a. Muscle fibers increase…

A: Skeletal muscle is one of the three main muscle types, the two others are smooth muscle and cardiac…

Q: Which of the following statements about the connective sheath of skeletal muscle is false? a. the…

A: Muscle system is one of body system  which concerned with the contraction and relaxation of muscle…

Q: Several snake venoms contain toxins which blocks acetylcholine receptors at the neuromuscular…

A: The neuromuscular system includes all the muscles in the body and the nerves that are required to…

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: Botulism toxin inhibits the release of acetylcholine at the neuromuscular junctions. What effect…

A: Neurons are the basic structural and functional unit of the nervous system. Neurons have three…

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 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: While initial control of skeletal muscles occurs with the motor cortex, a successful movement also…

A: The motor movements required coordination of central nervous system that controls the muscle…

Q: A. This type of muscle is found in the lining of the stomach as well as the walls of arteries.…

A: In human body, muscular system is divided into three types- skeletal, smooth and cardiac. The…

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: 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: A skeletal muscle motor unit   A.Is the number of muscle cells innervated by one motor neuron. B.Is…

A: The skeletal system consists of bones and muscle fibres. These muscle fibres help in contracting and…

Q: increase in turgor potential in the extensor cells of the pulvini of leguminous leaflets and an…

A: Introduction The Nyctinastic Leaf Movement Is Controlled By The Pulvinus. It Is A Specific Structure…

Q: In general, fast-twitch fibers generate less power than slow-twitch fibers. A. True B. False

A: People have two general types of skeletal muscle fibers: slow-twitch (type I) and fast-twitch (type…

Q: The energy for muscle contraction is most directly obtained from a.phosphocreatine. b.ATP.…

A: Muscle contraction refers to the tightening of the muscles present in an organism's body to cause…

Q: 1. During skeletal muscle contraction, what event directly precedes the release of actin by myosin?…

A: It is required to mention the event that directly precedes the release of actin by myosin during the…

Q: As the level of exercise in a person increases we can expect that. A the arteries supplying the…

A: Blood is the type of connective tissue that flows through the whole body. Its main function is to…

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: if, in a laboratory, a skeletal muscle cell receives a single stimulus to contract, it produces a…

A: As per our honor code, we are authorized to answer only one question at a moment. So, we are…

Q: true about slow motor units?

A: The true about slow motor units is they have a high number of mitochondria.

Q: What do we mean by the somatic motor system? O a. Cardiac muscle O b. The smooth muscles and glands…

A: Introduction :  The group of central and peripheral nervous system elements that support motor…

Q: Put the following in order to accurately follow the sequence of events associated with muscle fiber…

A: Relaxing of muscle filaments starts with the motor neuron, which stop delivering its compound sign,…

Q: Find the false statement about white muscle fibers (glycolytic fibers)? Se ect one: a. Fiber…

A: Depending upon the presence or absence of myoglobin muscle fibres can be of two types that is ref…

Q: Which of the following correctly lists the structures that make up a motor unit? a. motor neuron…

A: There are two term always used to describe the anatomical relationship between motor neurons and…

Q: The Interstitial Cells of Cajal (ICC) generate "slow waves" which refer to O A. slow action…

A: Option:B   phasic contractions

Q: Muscle fatigue is caused by a buildup of a. glycogen. b. oxygen. c. lactic acid. d. ATP.

A: The inability of a muscle to maintain force of contraction after prolonged activity is called muscle…

Q: When comparing cardiac muscle cells and skeletal muscle cells, Select one: a. only skeletal muscle…

A: The objective of the question is to identify the correct statement when comparing cardiac muscle…

Q: Action potential propagates along the sarcolemma and down the T-tubules to activate __________…

A: Voltage-sensitive T-tubule proteins are the series of proteins that control calcium release.…

Q: he factor(s) that determine the duration of a twitch in various types of fibers is the speed of the…

A: Muscle contraction is a complex biological process that involves the interaction of various…

Q: 24. Which of the following is true concerning the role of Calcium in the contraction of muscle-…

A: A soft tissue derived from the mesoderm layer during embryonic development that functions to assist…

Anatomical Position

Anatomical position refers to the position in which an individual faces forward with their upper limbs stretched to both sides with palms facing forward. The standard anatomical position of the body is used to reference other anatomical aspects of the body.