1. When this is released by the synaptic vesicles, it causes a change in the muscle fiber membrane potential that spreads along the T tubules. a - Acetylcholine (ACh)  d - a, b, and c c - ATP b - calcium

Q: Smooth muscle has actin/myosin, why is it not striated? (consider what striation can provide). What…

A: Types of muscles There are three major types of muscles in humans. These are, Skeletal muscle…

Q: which decreases cytoplasmic calcium ion concentration The relaxation of skeletal muscle relies on…

A:

Q: Muscle contraction can occur when: is it 1,2,3,4? A bands lengthen. myosin filaments shorten.…

A: Muscle is a specialized contractile tissue that is a distinguishing characteristic of animals.…

Q: I1. Electrical impulses in muscle fibers are called 12. Groups of muscle fibers are that are…

A: The movement of skeleton muscles is voluntary in nature and regulated by central nervous system.…

Q: b. When the DHP receptor activates, the sarcoplasmic reticulum membrane becomes less perme to Ca2+…

A: Muscle contraction is a highly coordinated and complex process. it requires thick and thin filaments…

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: The Sarcomere 2 Thin filaments are often named for which protein? a. actin b. myosin c. troponin d.…

A: The sarcomere is the smallest functional unit of a skeletal muscle fiber. It is a highly organized…

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: 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: Satellite cells *         A- are muscle stem cells       B- are located between the plasma membrane…

A: Myosatellite cells, otherwise called satellite cells or muscle stem cells, are little multipotent…

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: 33. Which of the following sentences is NOT correct? A. Cancellous bone (trabecular) is spongy bone…

A: A bone forms a part of the vertebrate skeleton in animals. They protect the various organs of the…

Q: 8. Assuming two skeletal muscle fibers have the same myosin ATPase activity, and both are producing…

A: Isotonic contraction :- During isotonic contraction of muscle, same tension maintained while the…

Q: What happens to calcium ions when muscle contraction ends and relaxation begins? O The ions diffuse…

A: Muscle is one of the types of soft tissues present in human beings and many other animals, and these…

Q: The endplate potential decreases with distance because

A: The end plate potential is a potential that propagates to the neighbouring patch of muscle fibre…

Q: Skeletal muscle tone :-a- is a dynamic stretch reflexb- has a dynamic state c- is increased during…

A: The muscular system of the body is the system of muscles that provides strength, shape and…

Q: Explain the difference between a single muscle fiber contraction and a skeletal muscle contraction…

A: When an Action Potential travels along the Nerves to the Muscles, a Muscle Contraction is triggered.…

Q: 1. muscle contraction Skeletal muscle contraction is initiated by _______________________ motor…

A: When there is an activation in the tension generating sites in the muscle fibers then it is known as…

Q: The contraction of skeletal muscle fibers is prevented by regulatory proteins located on the: O thin…

A: Muscle contraction is referred to as the tightening of the muscles present in the body of an…

Q: During muscle contraction, calicum ions bind to A. Actin Filaments B. Tropomyosin C. Troponin D.…

A: C. Troponin   During muscle contraction, calcium ions bind to the regulatory protein troponin, which…

Q: Which of the following choices is CORRECT? A Myofibrils extend the length of a muscle fibre B.…

A: In muscles the sarcomer is termed as the fundamental unit. The sarcomer helps in the contraction.…

Q: Which of the following statements about the microscopic structure of smooth muscle fibers is…

A: Muscles have a vital role in the body. Muscles do a lot for our bodies as well. They circulate blood…

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: During muscle contraction, what does calcium bind to in skeletal muscles? Tropomyosin O Actin Myosin…

A: Skeletal muscles are one of the major type of muscle where it works under the voluntary control of…

Q: Define sarcomere. Describe its components and its role in muscle contraction

A: A muscle usually contract together to produce a force. A muscle comprises of the fibers of muscle…

Q: Cardiac muscle cells produce more force when they have already shortened to less A than half of…

A: Cardiac muscle is definitely taken into consideration certainly one of three kinds of vertebrate…

Q: Which of the following is not a role of the muscular system inhomeostasis in the body?a. produce…

A: The muscular and skeletal system work together to allow movements in the body for the maintenance of…

Q: Column I Column II   Ca binds to calmodulin 1.           Elastic fibers that anchor thick…

A: COLUMN-I COLUMN-II 1 Z line  Elastic fibers that anchor thick filaments in place 2 actin and…

Q: Both skeletal and (contractile) heart muscle cells A Have unstable resting membrane potentials B…

A: The skeletal muscles are the class muscles that are attached to the bones and are responsible for…

Q: 3. Explain the 5 steps in voluntary control of skeletal muscles.

A: The skeletal muscles are under the control of CNS and regulated voluntarily by the stimulation…

Q: The protein whose removal enables myosin to bind actin in smooth muscle is: (pick one from 1-5).…

A: Smooth muscle: Smooth muscle is present throughout the body, where it serves a variety of functions.…

Q: All the following are necessary for a skeletal muscle cell to full relax, except one. Which answer…

A: Muscle is a delicate tissue found in many creatures. Muscle cells contain protein fibers of actin…

Q: Which of these statements below would NOT BE TRUE regarding skeletal muscle activity? O most muscles…

A: Skeletal muscles are the voluntary muscles which works with the will of a person. These muscles are…

Q: Which of the following sentences is NOT correct? A. Cancellous bone (trabecular) is spongy bone B.…

A: Among the given statements, the final statement seems incomplete. So I am providing solution…

Q: The site where the motor nerve impulse reaches the muscle fiber is called the Z lines action…

A: The site where the motor nerve impulse reaches the muscle fiber is called the neuromuscular…

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: During muscle contraction, the I band a. hides the H zone. b. shortens or narrows. c. overlaps the Z…

A: SARCOMERE It is the complicated unit of striated muscle tissue. It is the repeating unit between two…

Q: Explain the source of the signals detected by the EMG electrodes. 2. Describe the role of Ca2+, Na+,…

A: Electromyography is a technique for measuring muscle reaction or electrical activity in response to…

Q: Adequate level of muscle tone is essential for the accurate performance of voluntary movements,…

A: Movements, which can be controlled consciously by the person are known as voluntary movements.…

Q: 9. The binding of the myosin head to the free binding site of the actin filament results in the…

A: Introduction  Actin and myosin, coupled with the regulatory proteins known as troponin, tropomyosin,…

Q: 5. LABEL the following features on the figure to the RIGHT: insertion, origin, tendon, muscle Now…

A: Muscle tissue is a well-vascularized soft tissue present in the muscles of animal body. Muscle…

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

A: Muscles are responsible for providing the movement to the body. It also releases heat.