0
The rhythmic, coordinated contraction of the atria and ventricles of the heart. In the normal healthy heart, contraction is produced in response to depolarisation of sino-atrial nodal tissue which then propagates through the ventricular tissue. Excitation is coupled to contraction via calcium ion influx and actin-myosin cross bridge activation. This produces myocyte fibre shortening and the ventricular wall thickens, a majority of which is attributable to shear deformation in the inner third of the ventricular mass. This shearing or sliding, much like a deck of cards sliding upon one another, occurs between muscle layers of the ventricles and is believed to account for the majority of wall thickening.
Ventricular wall thickening forces blood out of the ventricular chambers and into the pulmonary and systemic circulations. Relaxation or diastole follows systole, this enables the heart to relax and fill with blood in order to repeat the above process.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoa fluid naturally flows from an area of the high pressure to an are of low pressure.
Wiki User
∙ 13y agoa fluid is not necessarily a liquid, but no solids flow. the weaker bonds in a fluid let the particles move around, letting the fluid move around and flow.
Add your answer:
Earn +20 pts
An irregular fluid flow is what?
Irregular Fluid Flow is called Turbulent Flow! I hope this helped! :D
What causes friction that opposes wind?
fluid friction or drag pushes the opposite direction the wnd is trying to flow.
Can a fluid flow?
That's more or less what fluid means: something that can flow.
A fluid resistance to flow?
A fluid's resistance to flow is called viscosity.
What causes fluids to move or flow?
This is a multi-faceted question. In biological terms, fluids flow across selectively permeable membranes due to concentration gradients. The fluid will flow to the side witht he greater solute concentration (or osmolarity).
What cellular specialization causes fluid to flow over the epithelial surface?
cilia
An irregular fluid flow is what?
Irregular Fluid Flow is called Turbulent Flow! I hope this helped! :D
How does adhesion affect flow rate?
adhesion causes the flow rate to go faster because of the attraction between the particles of a fluid and particles of other substances.
What causes friction that opposes wind?
fluid friction or drag pushes the opposite direction the wnd is trying to flow.
A fluid resistance to flow?
A fluid's resistance to flow is called viscosity.
Can a fluid flow?
That's more or less what fluid means: something that can flow.
A fluid resistance to flow is called?
A fluid's resistance to flow is called its viscosity.
What is wrong with the statement Voltage flows through a circuit?
Voltage is the force that causes current to flow through a circuit. In a similar way it isn't pressure that flows through a pipe - it is the fluid flowing through a pipe due to a difference in pressure at the entry and exit of the pipe that causes the fluid to flow through, no pressure flowing through a pipe.
What causes fluids to move or flow?
This is a multi-faceted question. In biological terms, fluids flow across selectively permeable membranes due to concentration gradients. The fluid will flow to the side witht he greater solute concentration (or osmolarity).
What is the viscosity of a fluid?
resistance to fluid flow.
What viscosity level was the fluid flow rate the highest?
The relationship between radius and fluid flow rate is inversely proportional. As radius goes down, fluid flow rate goes up. The highest fluid flow rate will be at the lowest radius.
What is the equation for fluid flow?
is the equation for flow velocity
