The West is blinking in disbelief â Vladimir Putin just invaded Ukraine. German diplomats, French Eurocrats and American pundits are all stunned.
A: The main organ in the circulatory system is the heart, according to Hillendale Health. The two other major parts of the circulatory system are the blood and the blood vessels. The heart is found slightly to the left at the center of the chest, and it is primarily responsible for pumping blood and keeping the blood moving throughout the body, explains Hillendale Health.
The main organs of the nervous system, that is the brain and the spinal cord form the central nervous system. Brain. The brain is one of the most important organs in the human body system. It is the center of all commands.It monitors all the conscious and unconscious processes of the body.he PNS is further divided into the somatic nervous system and the autonomic nervous system. The somatic nervous system contains sensory (afferent) neurons that carry information from organs/muscles to the CNS, and motor (efferent) neurons that carry information from the brain and spinal cord to muscles of the body.