Answer:
Independent Variable: Hours of sleep
Dependent Variable: Test scores
Experimental Group: Group A
Control Group: Group B
Explanation:
Hours of sleep is the independant variable because it is the factor being tested by the teacher. This is the factor that can be controlled.
Test scores is the dependant variable because it is the factor being affected by the changes in the independent variable. This is the variable being measured.
Group A is the experimental group because this is the one that has been altered or changed from what is normal.
Group B is the control group because nothing is being changed in this group but simply measured as a basis for comparison.
Answer:
PERICARDIUM MEMBRANE
The pericardium acts as mechanical protection for the heart and big vessels, and a lubrication to reduce friction between the heart and the surrounding structures. A very important role in all aspects of pericardial functions is played by mesothelial cells.
Our heart is surrounded by a double-layered membrane, called the pericardium or pericardial sac. This membrane keeps your heart in place in your chest cavity, restricts the expansion of your heart when your blood volume increases, and helps to protect your heart.
PERICARDIUM FLUID
Pericardial fluid is the serous fluid secreted by the serous layer of the pericardium into the pericardial cavity. ... This serous layer has two membranes which enclose the pericardial cavity into which is secreted the pericardial fluid.
The radius is attached to the hummers and the wrist
During the propagation of the excitation wave along the sarcolemma, the action potentials travel down the transverse (T) tubules. and thus stimulates the intracellular release of the calcium ions. Propagation of an action potential along the sarcolemma is the excitation portion of excitation coupling and must be coupled to the release of calcium ions for contraction.
