Control and Coordination in Plants and Animals Test - 1

The study of nervous system and its disorders is called neurology. Neurology deals with the diagnosis and treatment of all categories of conditions and disease involving the central and peripheral nervous system (and its subdivisions, the autonomic nervous system and the somatic nervous system); including their coverings, blood vessels, and all effector tissue, such as muscle.

Presence of nervous system in the form of dorsal nerve cord is one of the fundamental characters of chordates. The dorsal nerve cord is later modified in vertebrates into the central nervous system which is composed of the brain and the spinal cord. Dorsal nerve cord is mainly found in subphylum Vertebrata.

Neuron is the longest cell of an animal's body. A neuron is an electrically excitable cell that processes and transmits information through electrical and chemical signals.

Epididymis is a part of male reproductive system. It is not a part of the nervous system.

Many of the involuntary actions are controlled by the mid-brain and hind-brain. All these involuntary actions including blood pressure, salivation and vomiting are controlled by the medulla in the hind-brain.

Brain stem contains pons and medulla oblongata. The brain stem controls the flow of messages between the brain and the rest of the body, and it also controls basic body functions such as breathing, swallowing, heart rate, blood pressure and consciousness.

Pons is the respiratory centre of the human body. It is part of the brainstem; and in humans, it lies between the midbrain (above) and the medulla oblongata (below), and in front of the cerebellum.

Occipital lobes perceive the sensation of sight in human beings. The occipital lobe is one of the four major lobes of the cerebral cortex in the brain of mammals.

The nervous system comprises the central nervous system, consisting of the brain and spinal cord, and the peripheral nervous system, consisting of the cranial, spinal, and peripheral nerves, together with their motor and sensory endings.

The largest cranial nerve in human beings is the trigeminal nerve. It has three major branches: the ophthalmic nerve (V1), the maxillary nerve (V2) and the mandibular nerve (V3).