Which of the following is a component of the neuromuscular junction? a. axon terminal of a somatic motor neuron b. synaptic cleft c. junctional folds of the sarcoplasmic reticulum d. a and b e. a, b, and c

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: Identify the longest muscles in the body and outline the two major joint it crosses 2. In terms of…

A: The 3 types of muscle tissue are cardiac, smooth, and skeletal. Cardiac muscle cells are located in…

Q: Which of the following is true? A) Tendons join bone to bone B) Tendons join muscle to bone and…

A: Bone tendons and ligaments are a type of dense connective tissues. All these contains large amounts…

Q: Which of the following effects result(s) from aging on the muscular system? a. Muscle mass declines.…

A: The muscular system is defined as an organ system composed of skeletal muscles, smooth muscles, and…

Q: Which region of the sarcomere does not change length between muscle relaxation and muscle…

A: Muscle is a kind of tissue as it is made up of group of cells. It is one of the four kind of primary…

Q: he area between two Z discs is termed a A. A band B. I band C. H zone D. Sarcomere

A: The muscle fibre contain sarcomere which is the constructional unit and contain thick and thin…

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: 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: At low intracellular Ca2+ concentration, _________________ the active sites on the thin actin…

A: Muscular system is one of the body system which aids in contraction and relaxation of muscle so that…

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 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: 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: ACh receptors are found in:- a. synaptic vesicles. b. terminal cisternae. c. thick filaments. d.…

A: Acetylcholine is a neurotransmitter in the body that is principally responsible for the relaxation…

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: Movement of sarcomeres is dependent upon the motor protein ______ attached to and moving along…

A: The smallest functional unit of a striated muscle tissue is called a sarcomere. The muscle fiber is…

Q: What is released when myosin heads attach to actin filaments A. Phosphate B. ATP C. ADP D.…

A: Myosin and actin filaments are two proteins that help muscles contract. Myosin is a motor protein…

Q: The actin myosin bond is broken by the attachment of A. Tropomyosin B. Phosphate C. ATP D. ADP

A: Myosin and actin filaments are two types of proteins involved in muscle contraction. Myosin is a…

Q: Which of the following thin filament structures directly interacts with the myosin heads to form a…

A: The mechanism of contraction of skeletal muscle was best explained through - "sliding filament…

Q: At a Neuromuscular junction the nerve impulse travels through the: A. Pores in the membrane B.…

A: Action potential generates when the neurons want to pass the information along the body from its…

Q: Choose the best description of how myosin and actin are arranged within the two types of protein…

A: In order to facilitate movement, muscles are attached to bones. They function by shortening…

Q: The part of the sarcolemma that invaginates into the interior of skeletal muscle fibers is thea. T…

A: Each skeletal muscle is made of integrated tissues. It functions voluntarily and involves skeletal…

Q: What happens at a neuromuscular junction? a. An electrical impulse causes the release of a chemical.…

A: A neuromuscular junction is a chemical synapse between a motor neuron and a muscle fiber. It permits…

Q: Thick Filaments contain ⒸA. Actin OB. Troponin O C. Tropomyosin O D. Myosin OE. All of the above

A: Muscular system is a type of body system which is involved in regular contraction and relaxation so…

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: Describe what is happening to the following parts of a sarcomere during muscle contraction. a. H…

A: H band or H-zone is the central region of the A zone. H zone only contains thick filaments i.e.…

Q: As ADP and Ⓟ are released from a myosin head,a. actin filaments move toward the H band.b. a…

A: During muscles contraction, energy for the movement of myosin head is obtained by the breakdown of…

Q: [ANIMAL PHYSIOLOGY] When animals die, the muscles stiffen in rigor mortis because. Select one: O a.…

A: Rigor mortis is a phenomenon occurring in the body when the body dies. It is a postmortem…

Q: 17. Which of the following properties of the structure of skeletal muscle is not true?   A.…

A: The skeletal muscles or voluntary muscles are attached to bones and are involved in locomotion.

Q: An action potential causes calcium ions to diffuse from the _____ into the ____ A. Sarcoplasmic…

A: Muscular system is an organ system which is involved in contraction and relaxation of muscles so…

Q: What causes relaxation in a skeletal muscle fiber Select one: a. Myosin remains attached to actin b.…

A: Each skeletal muscle is an organ that consists of various integrated tissues. These tissues include…

Q: 28. The pairs of skeletal muscles are the prime mover and antagonist. A. True B. False ____ 29.…

A: Introduction: Muscle is described as the contractile tissue that causes movement. Muscles may be…