SA Node<span> which is also known as the sinus node, is the natural pacemaker of
the heart. It controls the heart rate by generating electrical impulses
and then sending electrical signals through the heart muscle, causing
the heart to contract and pump blood throughout the body. </span>
The SA Node is located in the outer layer of the right atrium of the heart, near the superior vena cava. It is made up of a group of cells (myocytes) positioned on the
wall of the right atrium, at the center of the heart and near the
entrance of the superior vena cava. These cells contract at a rate of
about 70-80 times per minute, which make up the natural heart beat.
Findings show that short-term changes in inhibitory control are predictive of alcohol consumption, which raises the possibility that temporary changes in inhibition may be a risk factor for periods of severe drinking.
<h3>What is inhibitory control?</h3>
- An essential part of impulsivity and executive functioning, inhibitive control refers to the capacity to halt, alter, or postpone incorrect behavior.
- It is also a crucial part of the larger concept of self-control. Utilizing computerized challenges like the stop signal task, inhibitory control can be operationalized in the lab. In order to complete this task, participants must react quickly to arbitrary on-screen "go" cues.
- The participants are instructed to suppress their reaction on a small percentage of trials where a visual or aural "stop" signal is provided shortly after the go stimulus. Participants' actions during stop trials can be described as a "race" between their motor reaction and their ability to regulate that response.
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C) Eutrophication is the answer
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Answer:
D. The two students who have two fragments have one restriction site in this region.
Explanation:
The DNA samples from the cheek cells were subjected to digestion with a restriction enzyme. This enzyme is an endonuclease and cuts the DNA at a specific sequence only. This sequence is called a restriction site. If the restriction site is not present in the sample DNA, the restriction enzyme cannot cut it. The presence of one restriction site in the sample DNA would cut it into two DNA fragments.
Similarly, the presence of two restriction sites in each DNA molecule would obtain a total of three DNA fragments per DNA molecule.
Low blood pressure may cause the net hydrostatic pressure of a capillary
to be less than normal resulting in decreased net filtration pressure.
<h3>What is Pressure?</h3>
This is force applied to a body per unit area and it can be calculated by the
following below:
Pressure = Force/Area
When the net hydrostatic pressure of a capillary is less than normal, the
glomerular blood hydrostatic pressure (GBHP) decreases thereby resulting
in a corresponding decrease in net filtration pressure.
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