Question

Third ventricle of brain is also known as
A. Metacoel
B. Rhincoel
C. Paracoel
D. Diacoel

Answer 1

Hint:-The brain is an organ that functions at the center of the nervous system in all vertebrates and most invertebrate animals. It is located inside the head, generally near the sensory organs, for senses such as vision. It is the most intricate organ in the body of a vertebrate. In humans, there are around 14-16 billion neurons in the cerebral cortex and the average number of neurons in the cerebellum is 55-70 billion.

Complete answer:
The brain ventricles are a network of cavities filled with cerebrospinal fluid (CSF) and situated inside the parenchyma of the brain. There are two lateral ventricles, the third ventricle, the cerebral aqueduct, and the fourth ventricle in the ventricular system. The choroid plexuses located in the ventricles produce CSF, which fills the ventricles and subarachnoid space, followed by a cycle of continuous production and reabsorption. Paracoel is the name of the first and second ventricles of the cerebral hemispheres. The olfactory lobe ventricle in the rabbit's brain is called the rhinocoel. The diocoel is considered the third ventricle found in the diencephalon. Metacoel is the fourth ventricle found between the brainstem and the cerebellum. The spinal cord cavity is referred to as the central canal or neurocell.

Therefore, the correct answer is Option D - Diacoel.

Note:- The human brain consists of about 75 percent water, as well as fats and proteins. The average human infant brain weighs between 350 to 400 grams or three-quarters of a pound. This means that the brain grows from infancy to adulthood to about four times its original height.