The clam can survive with only 3 pairs of ganglia. Two pairs control the open and closing of the shell, will the pedal controls the foot of the clam.
The nervous system has two main parts: the central nervous system, which includes the brain and spinal cord, and the peripheral nervous system, which includes all the nerves that branch out from the spinal cord to the rest of the body. These parts work together to control and coordinate the body's activities.
The peripheral nervous system consists of two main parts: the somatic nervous system, which controls voluntary muscle movements and receives sensory information, and the autonomic nervous system, which regulates involuntary processes like heart rate, digestion, and breathing.
neurons
vasomotor system system of autonomous nervous system.
You could define 5 parts by saying they are:the central nervous system, and the somatic, sympathetic, parasympathetic and entericnervous systems.However, a better way of describing the parts of the nervous system is todivide it into two main parts and then sub-parts:the main parts:the Central Nervous System (CNS, brain & spine),and the Peripheral Nervous System (PNS, all the nerves and neurons outside the brain and spine).Then the peripheral nervous system is divided intothe somatic nervous system (nerves which control the voluntary muscles) andthe autonomic nervous system (nerves which control visceral functions or organs like the heart or stomach);and the autonomic nervous system is itself divided into thesympathetic (fight-or-flight emergency response),parasympathetic (relaxation),and enteric (digestive) nervous systems.
The nervous system of clams often does not include the circulation system. The nervous system does not include the shell or the digestive system either.
No, they do not have a central nervous system.
Most likely not, as they lack a central nervous system.
The autonomic nervous system and the somatic nervous system.
Well, two important parts of the nervous system is the Central Nervous system and the peripheral nervous system. I hope that answers your question.
The parts that make the nervous system are the brain and the spinalcord
there are two parts of a nervous system.
The central nervous system (including the brain) and the peripheral nervous system.
the nervous system is a sensitive part of the body
automatic nervous system
The central nervous system (CNS) and the peripheral nervous system (PNS)
The two integral parts of the autonomic nervous system are the sympathetic nervous system responsible for, "rest and digest" and the parasympathetic nervous system that is responsible for, "fight or flight".