What does C represent? transverse tubule sarcomere O terminal cisternae O myofibril

Q: Which of the following is NOT true regarding actin? O It contains troponin and tropomyosin O It is a…

A: Among the given options, option (d) is the most appropriate. All the mentioned statements are true…

Q: Myosin heads bend when attached to actin

A: Correct option is C  Myosin heads bend when attached to actin

Q: Neurons supplying smooth muscle secrete histamine display receptors only on the dendrites create…

A: Smooth muscle are cells that do not have striations. These muscles are present in the walls of…

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: Neurons controlling skeletal muscle contraction are which type? Multipolar motor neurons Bipolar…

A: The neurons are classified into different categories on the basis of certain features. They can be…

Q: Myofibis in muscle fibres are made up of repeating units of dark and light bonds called

A: Myofibril is a muscle cell that is shaped like a rod. Many chains of Myofibril bound together to…

Q: Label the structures of the myofibril model shown with overlying sarcoplasmic reticulum. Transverse…

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

Q: How does the nervous system control skeletal muscle? Outlining the sequence of events at the somatic…

A: Introduction: The myofibrils are made of parallel bundles of protein microfilaments referred to as…

Q: Based on your understanding of skeletal muscle fiber physiology, which of the following processes is…

A: ATP is the adenine tri phosphate and is the instant source of energy .It is used in many of the…

Q: What is NOT related to temporal summation for muscle contraction? residual Ca2+ in the muscle…

A: Temporal summation of muscle contraction can be described as a sensory summation involving the…

Q: What are the positions ofactin and myosin molecules inthe sarcomere before andduring the…

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

Q: The contractile unit of a muscle fiber is called: O myosin O actin sarcomere O sarcolemma

A: Introduction :- Muscle fibres are made up of just one muscle cell. They aid in the control of the…

Q: Which ion starts the muscular contraction by binding to myofilaments? Potassium Chloride Calcium…

A: The muscular system whose origin can be traced to the middle germ layeris responsible for the…

Q: Thick and thin myofilaments have different properties. For each phrase below, indicate whether the…

A: Myofilaments are the parallel striated muscle cells or muscle fibres that constitute the fasicles…

Q: Which of the following is the plasma membrane of the myofiber?

A: The muscle fibers are multi-nucleated (exclusively in the case of skeletal muscle fibers),…

Q: Which skeletal muscle fiber type would fatigue the fastest? SO FG SG FO

A: The skeletal muscle is a type of muscle that has striation, tubular structure, and multiple nuclei.…

Q: Muscles relaxatiom occurs when acetylcholine is cleaved from its receptors ,calcium is pulled back…

A: The muscle tissue present in the human body is primarily responsible for the movement in the body.…

Q: What visible features of the neuromuscular junction (NMJ) muscle tissue indicate that it is skeletal…

A: There are three muscle types, namely, smooth muscle, cardiac muscle, and skeletal muscle. The…

Q: What do you mean by myosin myofilaments?

A: Muscles consist of munerous muscle fibres. Each muscle fibre contains many myofibrils having…

Q: Which is the correct order from smallest to largest?     Myofilament, Myocyte, Myofibril…

A: The muscular system is one of the 11 major body organ systems of the body that aids in the…

Q: - The sacromere is: a- A functional unit of the skeletal muscle b- The area between two intercalated…

A: Muscle cells, commonly known as myocytes, are the cells that makeup muscle tissue. There are three…

Q: Put the steps of excitation-contraction in order: 1 Myosin "heads" pivot, cause [ Choose ] Calcium…

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

Q: In which of the following locations would you most likely find the tissue known as perimysium?…

A: Skeletal muscle is responsible for movement of various parts of the body and locomotion. These…

Q: The muscle fibers with the fastest contractions are slow oxidative fast oxidative O fast glycolytic…

A: The muscles are responsible for movement of body parts. These are also involved in generating heat…

Q: Myofiber,that is mature muscle cells, have more than one nucleus,how does that happen

A: Myofibers are units that form the skeletal muscles. They are seen as bundles, and apart from muscle…

Q: State some major differences between actin filaments and myosin filaments.

A: A long chain of protein like those in muscle and hair is called protein filaments. They are…

Q: This drawing is showing how many myofibrils? too many to count about 49 about 14 hundreds

A: Skeletal muscles are one of the three major types of muscles and is controlled voluntarily by the…

Q: Sarcoplasmic Transverse (T- reticulum Triad Opening of T- tubule Terminal Endomysium Sarcolemma…

A: Tissue is the next level organization of the cells. There are 4 different types of tissue are…

Q: The terms sarcolemma and sarcoplasm in muscle refer to, in order, cell membrane and myofibril cell…

A: We know that The movement of the body part leading to a change in the position or location of the…

Q: ACh From accmulating in the neuromusculaar junction and a sustained Contraction? Causings Briety…

A: All neurons with fibres release acetylcholine are called cholinergic. Their synaptic terminal fit…