Tag: the structure of brain

The third ventricle is one of four connected fluid-filled cavities comprising the ventricular system within the mammalian brain. It is a median cleft in the diencephalon between the two thalami and is filled with cerebrospinal fluid (CSF). It is in the midline, between the left and right lateral ventricles.

The prefrontal lobes of the cerebrum are responsible for executive functions, including decision-making, social behavior, and personality. Damage to this area often results in significant changes to an individual's personality and temperament.

In standard IQ classification scales, an IQ score of 120 is categorized as superior intelligence. Average intelligence typically falls between 90 and 109.

Frontal lobe of cerebrum of brain is responsible for thinking, evaluation of information, judgement, decision making, and planning and response organization i.e. intellectual processes. The cardiovascular reflex center of medulla oblongata regulates the rate and force of heat beat. The thermoregulation centre is present in hypothalamus which maintains the constant human body temperature by regulation of the diameter of blood vessels (constriction or dilation), shivering and sweating mechanism. Thus, correct answer is D.

The corpus callosum is a large bundle of nerve fibers that connects the left and right cerebral hemispheres, allowing for communication between the two sides of the brain.

The mesencephalon is also called the midbrain. It is a small and reduced part of the brain which connects the forebrain with the brainstem. Its anterior part consists of two longitudinal myelinated nerve fibres called the cerebral peduncles or crus cerebrum or the crura cerebri. The posterior part is made of four colliculi that are called the corpora quadrigemina.

The subarachnoid space is the interval between the arachnoid membrane and the pia mater. It is filled with cerebrospinal fluid.