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.
Answer: The four principal types of bones are long, short, flat and irregular. Bones that are longer than they are wide are called long bones.
Hope this helps...... Stay safe and have a Merry Christmas!!!! :D
I just want to say that my account got deleted yesterday and i would love if i got at least 15-20 friends by Christmas.
The theory of evolution is a shortened form of the term “theory of evolution by natural selection,” which was proposed by Charles Darwin and Alfred Russel Wallace in the nineteenth century
With only one exception (the hyoid<span> bone in the throat), every bone in the human body meets up with at least one other bone at junctions called joints.</span>
Answer:
The subject definition has always been listed in the overview section elsewhere here.
Explanation:
Something you are attempting to calculate is a variable. It can be something, such as things, quantities of time, emotions, actions, or thoughts. If you're researching how people here feel regarding specific tv programs, television shows as well as emotions are the factors throughout the analysis. If you are learning how various forms of fertilizer influence how tall plants develop, fertilizer form and plant height seem to be the variables.
<u>Independent Variable</u>
- The independent variable seems to be the variable whom the adjustment is not influenced throughout the analysis by every other variable. Usually, the researcher herself needs to modify the independent variable or it adjusts by itself because nothing influences or adjusts this one in the project.
<u>Dependent Variable</u>
- Throughout the analysis, the dependent variable that's what's being examined but instead evaluated. As something of a consequence of the modifications to something like the independent variable, that's what modifications.
