The word 'contractile' is correct and usable in written English.
It is an adjective that means capable of contracting or causing contraction, particularly in relation to muscles or tissues. Example: The heart is a contractile organ that pumps blood throughout the body. In this sentence, 'contractile' describes the heart's ability to contract and expand in a rhythmic manner, allowing it to perform its function efficiently. This word can also be used in other contexts such as in biology or engineering, to describe the ability of a material or structure to contract under pressure or force.
Their subjects were also given an ultrasonic scan to measure the size of the chambers of their hearts, the thickness of the heart's muscular wall, and its filling and emptying actions.The researchers found that between the ages of 20 and 70, men lose one-third of the contractile muscle cells in the walls of their hearts.
Over the same period, women lose hardly any contractile cells.
Many bulbous plants have contractile adventitious roots that pull the bulb deeper into the ground as it grows.
While the contractile machinery occupies about 70 percent of the cardiac cell volume, mitochondria occupy about 25 percent and provide the necessary energy for contraction.
Solutions of myosin, the contractile protein of muscles, show very high flow birefringence; other proteins with very high flow birefringence include solutions of fibrinogen, the clotting material of blood plasma, and solutions of tobacco mosaic virus.
When the action potential reaches the opening of the transverse tubules (channels that open through the sarcolemma to the space outside the fibre; see above The myofibril) in the surface of the fibre, it travels down into the fibre along the tubular membranes, which are continuous with the surface membrane, to within a fraction of a micrometre of each functional contractile unit (Figure 7).
Possible explanations for this relate to the arrangement of the contractile apparatus within the cell, which gives rise to more cross bridges effectively operating in conjunction with one another.
The action potential propagates over the muscle fibre membrane to activate the contractile process.
The typical octopus has a saccular body: the head is only slightly demarcated from the body and has large, complex eyes and eight contractile arms.
In the walls of the acini are pyramidal secreting cells and some flat, star-shaped contractile cells called myoepithelial, or basket, cells.
Composed of the contractile proteins actin and myosin, the myofibrils represent the smallest units of contraction in living muscle.
