Contractile

The protoplasm is more or less extensively excavated by fluid spaces, vacuoles; one clearer circular space or vacuole, which is invariably present, appears at intervals, enlarges gradually, and then vanishes abruptly, to reappear after a brief interval; this is called the contractile vacuole (c.v.). ❋ Unknown (1906)

The euglenas main way of transporting itself is by swimming, the flagellum is mad up of of four part known as contractile fibrils, it uses these four fibrils to bend back and forth moving the creature to wherever it needs to go. ❋ Unknown (2009)

The euglenas main way of transporting itself is by swimming, the flagellum is mad up of of four part known as contractile fibrils, it uses these four fibrils to bend back and forth moving the creature along. ❋ Unknown (2009)

The authors describe how the romantic poets saw the heart's beating as the "fountain of life" and note how Harvey's famous book on the heart emphasized in its very title, "De Motu Cordis," the contractile motions that are a key to its function. ❋ Paul McHugh (2011)

"If you just find a way to rev up those contractile fibers for the muscle, then everything else from human biology and gait would allow us to be that fast," said physiologist Peter Weyand of Southern Methodist University, lead author of a study published Jan. 21 in the ❋ Unknown (2010)

The theory of evolution offers a framework for understanding how terrestrial life has evolved sensory mechanisms for transducing various types of energy from the environment, such as light, heat, and mechanical energy, into electrical and chemical signals that ultimately guide physical behavior by, to summarize tersely, impacting on contractile elements in cells that, consuming chemical energy ultiamtely derived from solar energy, produce mechanical energy that results in motor movement. ❋ Unknown (2010)

Think of actin and myosin, the contractile proteins. ❋ Unknown (2008)

For instance, targeting of genes encoding components of the contractile apparatus in cardiomyocytes leads to cardiomyopathy; targeted mutations in connexin proteins of gap junctions cause conduction defects; disrupted genes for transcription factors involved in heart development lead to congenital heart malformations; and targeting of genes controlling energy metabolism causes cardiomyopathy. ❋ Unknown (2007)

Oster and his colleagues tried the experiment, on their computer model, of lowering the ‘firing threshold’ of the contractile filaments. ❋ RICHARD DAWKINS (2009)

Rather than allowing the one contractile filament in their model to contract at will, they built into it a property which is common in certain kinds of muscle fibre: when stretched beyond a certain critical length, the fibre would respond by contracting to a much shorter length than the normal equilibrium length. ❋ RICHARD DAWKINS (2009)

Then they took one cell and tweaked its contractile filament to provoke it into contracting. ❋ RICHARD DAWKINS (2009)

Even evolutionary theory explains that there is a direct association between the duration of contractile activity and mitochondrial density of the contracting skeletal muscle in relation to insulin sensitivity. ❋ Unknown (2009)

Protists use contractile vacuoles to remove excess water from their cells. ❋ Unknown (2008)

The same will also happen to a marine protozoan when placed in freshwater; marine members have no contractile vacuoles. ❋ Unknown (2008)

The same is true for pinocytosis (the "drinking" of organic substances) and the release of wastes that are contained in contractile vacuoles. ❋ Unknown (2008)

Ciliates have permanent contractile vacuole pathways and pores where amoebas will release them from any point along the surface of its body. ❋ Unknown (2008)