0
What else can I help you with?
In the sliding filament mechanism the thin filament is being pulled toward the?
M-line, causing overlap with the thick filament during muscle contraction. This results in the sarcomere shortening and overall muscle contraction.
What is the difference between concentric and eccentric?
Concentric reducers are a symmetrical, conical shaped device that enlarges or reduces a pipes diameter equally about the centerline. An Eccentric reducer is not Symmetrical about the centerline. For example, envision the flow through a gravity based pipe... picture it in terms of an elevation section view... the eccentric reducer maintains the flowline (a straight continuous line along the bottom) while the pipe size decreases from the top down.
What is the name for the dark area of dense material that separates sarcomeres from each other?
The dark area of dense material that separates sarcomeres from each other is called the Z line or Z disc. It is responsible for anchoring the actin filaments in adjacent sarcomeres and plays a critical role in muscle contraction.
What type of muscles are your arteries?
Arteries are composed mainly of smooth muscle cells, also known as vascular smooth muscle. These muscle cells are responsible for regulating the diameter and constriction of the arteries, allowing for the control of blood flow and pressure. Additionally, arteries also have a layer of connective tissue and endothelial cells that line the inner surface.
What temperature difference should be expected between the indoor line and the permanent suction -line ports on the reversing valve during the cooling cycle?
During the cooling cycle, a temperature difference of around 18-20°F is expected between the indoor suction line and the permanent suction line ports on the reversing valve. This temperature difference indicates proper operation of the system.
What happens to the Z line during muscle contraction?
During muscle contraction, the Z line moves closer together, causing the muscle to shorten and generate force.
What happens to z line disc during contraction?
During muscle contraction, the Z-line distance decreases as the sarcomeres shorten. The myosin and actin filaments slide past each other which causes the Z-lines to come closer together. This results in the muscle fiber becoming shorter and generating force.
Do the you band and H zones become narrower during contraction?
Yes the H band shortens. During contraction the length of the sarcomere or from z line to z line must decrease in length. Thus the I band which is bisected by the z line must shorten as well as the H band, even though the H band is bisected by the A band it must shorten to allow fior this decrease in length. The A band does not shorten because it is composed of the entire length of myosin whose length never decreases during contraction.
In the skeletal muscle what is a Z-disk or Z line?
The Z-disk, also known as the Z line, is a structure in skeletal muscle that separates one sarcomere (the basic contractile unit of muscle) from the next. It serves as an anchor for actin filaments and helps to transmit force generated during muscle contraction. The Z-disk also plays a role in maintaining the alignment of myofibrils within the muscle cell.
In the sliding filament mechanism the thin filament is being pulled toward the?
M-line, causing overlap with the thick filament during muscle contraction. This results in the sarcomere shortening and overall muscle contraction.
Describe which bands and zones of a sarcomere stay the same and which narrow or disappear during muscle contraction?
M line
What is the significance of the Z line in muscle structure and function?
The Z line is a structural component in muscle fibers that helps to anchor the actin filaments and organize the sarcomeres, which are the basic units of muscle contraction. It plays a crucial role in maintaining the alignment and stability of the muscle fibers during contraction and relaxation, ultimately contributing to the overall function and efficiency of muscle movement.
What is the significance of the i band in muscle physiology and how does it contribute to the overall structure of a muscle band?
The I band in muscle physiology is important because it contains only thin filaments made of actin. This band is where actin filaments attach to the Z line, which helps to stabilize the structure of the muscle fiber. The I band contributes to the overall structure of a muscle by providing a region where the thin filaments can slide past the thick filaments during muscle contraction, allowing the muscle to shorten and generate force.
The basic unit of muscle contraction is the sarcomere which is?
the distance from one Z line to the next
What is the change in appperence of a myofibril during contraction with the I band?
In skeletal muscle contraction, the thin filaments of the sarcomere slide toward the M line, in between the thick filaments. This is called the sliding filament theory. The width of the A zone stays the same, but the Z lines move closer together. As the sarcomeres shorten and appear closer together, the muscle pulls together, producing tension that moves whatever it is attached to.Contraction is an active process; relaxation and return to resting length is entirely passive.
What is the zone of overlap?
The zone of overlap is the point where actin myofilaments overlay the myosin myofilaments as it (actin) gets pulled towards the m-line (mid-point of sarcomere). The zone of overlap increases during muscle contraction, resulting in the shortening of the muscle.
Why skeletal muscle can undergo tetanus?
It can but it undergoes incomplete tetanus, in this case there is a short period of relaxtion before a new contractian is initiated. The muscle contraction will go up in a wave like line..
