The right side of the heart ventricle is thicker because it contains more muscle since it has to pump blood through the whole body. The right ventricle is thinner because it has less mucle since it only has to pump blood to the left ventricle which is only a few inches away.
The walls of the left ventricle are 3 times as thick as those of the right ventricle, and its cavity is basically circular. The right ventricle cavity is crescent shaped and wraps around the left ventricle, the way a hand would loosely grasp a clenched fist.
The 4th ventricle is a cavity inside the human brain.
The function of the ventricle is to pump the blood into the semilinar
It forms the central canal of the spinal cord and protects the brain from trauma.
Diaphragm
The third ventricle
Same reason your anal cavity is circular.
The fluid-filled cavity located in each hemisphere of the cerebrum is called the lateral ventricle. It is part of the ventricular system of the brain and plays a role in producing and circulating cerebrospinal fluid.
Left ventricle: Receives blood from the left atrium and pumps it to the aorta. The aorta carries and distributes oxygen-rich blood to the rest of the body.
The third ventricle
in the chest cavity on the left of your own body
The narrow cavity along the midline superior to the hypothalamus and between the right and left halves of the thalamus is the third ventricle. It is one of the four interconnected ventricles within the brain that produce and store cerebrospinal fluid.