Question

What is the name of the element/structure that provides anchorage for thin

filaments and elastic filaments (these are pulled toward one another during
contraction)?

Answer 1

The Z- band is the element / structure that provides anchorage for thin filaments and elastic filaments.

Step-by-step explanation:

The Z-band or Z-line is a narrow dark band that delineates the two lateral borders on a sarcomere and seperates the sarcomere, the smallest functional unit of a muscle.

These Z- bands are composed of many proteins macromolecules like α-actin, titin, nebulin etc. The thin actin filaments are attached to Z-band and to titin which are the protein macromolecules.

The titin protein also anchorage and maintains other bands in position on a myofibril. Based on the sliding filament model of muscle contraction, the two Z-lines on a sarcomere comes close together during the sliding movement of thick and thin filaments.

Answer 2

The Z-band provides anchorage for thin filaments and elastin filaments in muscle tissues

Step-by-step explanation:

The Z-band or Z-line is a narrow dark band that delineates the two lateral borders on a sarcomere and separates the sarcomere, the smallest functional unit of a muscle.

The Z-band is composed of many protein macromolecules like α-actinin, titin, nebulin etc. The thin actin filaments are attached to the Z-band and to titin which are the protein macromolecules.

Titin protein, also anchorage and maintains other bands of filaments in position on the myofibril. According to the sliding filament model of muscle contraction, the two Z-lines on a sarcomere comes close together during the sliding of movement of thick and thin filaments.