A)Fill in the blanks below regarding sarcomeres: In a sarcomere, thin filaments are composed of.................  proteins while thick filaments are composed of..................  proteins. The H-band/zone of a sarcomere contains only........................  filaments. Before a muscle contraction, calcium ions are stored in the .................. that surrounds the sarcomere. When released, calcium binds to.................  proteins to displace them so myosin can bind to actin.

Q: What is the principal difference between the way cardiac muscle and smooth muscle form and the way…

A: Three principal types of muscle tissues are found in the human body, that is, cardiac, smooth, and…

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: If you will be observing cross sections of a striated muscle, how would you differentiate a skeletal…

A: Skeletal muscle: The longitudinal section shows the presence of large, elongated, and…

Q: During the contraction of a vertebrate skeletal muscle fiber,calcium ions(A) break cross-bridges as…

A: Skeletal muscles are voluntary muscles. It attached to bone by tendons. It helps in movement of…

Q: Large muscle fibers that are multinucleated, striated, and voluntary are found in (a) cardiac muscle…

A: The muscular tissue is composed of cells that can contract or relax the muscles of body part for…

Q: A typical relaxed sarcomere is about 2.3 um in length and contracts to about 2 um in length. Within…

A: a) To find: The overlap of thick and thin filaments in the relaxed and contracted sarcomere

Q: The sliding filament mechanism describes the process during which: a. actin and myosin slide…

A: The muscles of the body serves main role in the movement of the body parts such as legs, arms and…

Q: (a) Describe the structure of a sarcomere and indicate the relationship of the sarcomere to…

A: NOTE:- "As you have posted two parts under one, we will solve the first part for you, to get the…

Q: What are the role of thin filaments?

A: Muscles contain a good amount of proteins, which are present in the form of actin and myosin. Most…

Q: Define the types and functions of intermediate filaments.

A: Many eukaryotic species contain intermediate filaments as a form of cytoskeletal protein in their…

Q: Each sarcomere contains two sets of thin filaments. What are they? What is their function?

A: The soft tissue-like structure found in the majority of the animals including human beings is known…

Q: Name, and describe the function of each of the contractile and structural protein components of a…

A: Sarcomere is the functional unit of the skeletal muscles comprising of alternate light and dark…

Q: A sarcomere lies between two?

A: The muscles are responsible for generation of movements within the body. Different types of muscle…

Q: Which of the following statements is True?a. Tendons contract using the sliding filament…

A: The muscular-skeletal system made up of tendons, ligaments, bones, muscles of various types. The…

Q: Which of the following is the smallest: muscle fiber, thick filament, or myofibril? Which is…

A: Myofibrils are made up of small structures known as Myofilaments. There are basically two main kinds…

Q: Distinguish between Transverse tubules and sarcoplasmic reticulum?

A: Anatomy is the branch of biology that deals with the study of the structure of organisms and their…

Q: The formation of the most abundant collagen in the body involves the production of a number of…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: What is the difference between a ligament and a tendon?

A: A cell is the basic structural and functional unit of the body. The group of cells that are…

Q: Explain how the contractile filaments are structured

A: A muscle fiber is a contractile filament which is made of contractile proteins.   The thick…

Q: What do Intermediate filaments provide?

A: Intermediate filaments:                   The key function of intermediate filaments is to provide…

Q: What are T tubules and the sarcoplasmic reticulum?

A: Tubules are the anatomical structure made up of a minute tubes.

Q: Match the level of skeletal muscle organization given in the key with its description:Key:(a) muscle…

A: 1) rod shaped organelle made of sarcomeres :  myofibril…

Q: Describe the basic structure of a sarcomere.

A: Muscle fibres are made up of two protein filaments known as Myosin filaments which are thicker and…

Q: The events during the leg phase of a muscle fiber twitch begin with................ and end…

A: Muscle is a soft and contractile tissue that is responsible for body movement. Muscle cells consist…

Q: Is actin is present in thin filament?

A: The muscles are the components of the body that enable locomotion. The nervous system regulates the…

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: 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: The muscle tissue that is striated is (a) skeletal muscle, (b) cardiac muscle, (c) smooth muscle,…

A: The human beings' muscular system comprises three different types of muscle; these are cardiac…

Q: What are sarcomeres?

A: Myofibrils are composed of bundles of protein filaments known as myofilaments.

Q: Which type of myosin is found in contractile bundles?

A:

Q: What prevents the filaments from sliding back to their original position each time a myosin cross…

A: Movement is one of the most important and unique characteristics of a living being. Muscles are…

Q: Which fiber type would be the most useful in the leg muscles of a long-distance runner? (a) fast…

A: The skeletal muscle fibers are responsible for making up the skeletal muscle that is covered by…

Q: You wish to use the polymer ultra-high-molecular- weight polyethylene (UHMWPE) as a scaffold to make…

A: Scaffolds are considered to be the most effective solution for the several challenges imposed in the…

Q: The sarcoplasmic reticulum releases ____________________ into the sarcoplasm.    When Ca++ binds to…

A: Muscles are defined as soft tissue that can undergo contraction, movement production, and maintain…

Q: Glial fibrillary acidic protein (GFAP) is a type III intermediate filament protein that is expressed…

A: The type III intermediate filament protein include vimentin, desmin, the third type is specifically…