Answer:
The heart is a cone-shaped muscular organ located within the THORAX
. Its apex rests on the DIAPHRAGM , and its base is at the level
of the SECOND rib. The coronary artenes that nourish the
myocardium arise from the AORTA. The coronary sinus empties
into the RIGHT ATRIUM . Relative to the roles of the heart chambers, the
ATRIA are receiving chambers, whereas the VENTRICLES are
discharging chambers. The membrane that lines the heart and
also forms the valve ſaps is called the ENDOCARDIUM , The outermost
layer of the heart is called the EPICARDIUM . The fluid that fills the
pericardial sac acts to decrease FRICTION during heart activity.
The heart muscle, or myocardium, is composed of a special-
ized type of muscle tissue called CARDIAC MUSCLE
Explanation:
The correct answer would be, Broken White lines.
Multilane roads use broken white lines to divide lanes of traffic moving in the same direction.
Explanation:
There are some types of lines that we see on roads while driving. The roads are also of different types. There could be multilane roads, single roads, double roads, etc. Similarly the lines are also different that we see on these lanes.
When there are many lanes going in one direction, like three or four lanes normally, then these lanes are separated with the help of white broken lines. People can move from one lane to another lane depending upon the speed and traffic on the lanes. But there are also some places on the roads where these broken lines become solid and then people are not allowed to switch between the lanes until the broken white lines appear again.
Learn more about types of lines at:
brainly.com/question/8572602
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If could be B or also C still kinda confused with the question but if I’m wrong then I’m sorry :(
Answer:
Girls can start their periods anywhere from age 10 upwards, but the average is around 12 years.
