November 26, 2010
November 22, 2010
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November 10, 2010
The hemidiaphraghm is a large, focally innervated, respiratory skeletal muscle, composed of fast-type muscle fibres. Neurotransmission is mediated by nicotinic cholinoceptors. Electrical stimulation of the phrenic nerve evokes fast, shorting-lasting muscle twitches.
Posted by Dr Sameh AM. Abdel-Ghany at 11:19:00 PM
"Pithing" refers to the destruction of spinal cord pathways, severing all the nerve connections between the brain and the cardiovascular system.. This greatly simplifies the interpretation of experimental results by removing the central baroreceptor reflexes.
The simulation allows you to observe traces of blood pressure, left ventricular pressure, venous pressure, heart rate and contractile force on a simulated chart recorder, to apply a variety of different drugs, and to observe their effects.
Posted by Dr Sameh AM. Abdel-Ghany at 11:15:00 PM
Compared to studies on isolated cells or tissues, whole animal preparations such as this have the capacity to reveal the multiplicity of effects that a drug can have on the different organ systems.
The simulation allows you to observe the traces of blood pressure, heart rate, skeletal muscle and nictitating membrane twitches on the screen, to apply a variety of different drugs and to observe their effects .
Posted by Dr Sameh AM. Abdel-Ghany at 11:10:00 PM