The following points highlight the four main lobes of cerebral cortex. The lobes are: 1. Frontal Lobe 2. Parietal Lobe 3. Occipital Lobe 4. Temporal Lobe. 1. Frontal Lobe: It has area 4, 6—motor and premotor area, 4S suppressor area, 8-frontal eye field. In prefrontal lobe, areas 9-12 are present. Areas 44, 45 are called Broca's area of speech and [...]
In this article we will discuss about the definition and properties of reflex. Definition of Reflex: A reflex is defined as automatic/involuntary, stereotyped/repetitive, purpose serving or goal oriented response for afferent stimulation which can be internal or external. For any reflex action to be brought about, basic reflex arc should be intact. The components of basic reflex arc are (Fig. [...]
In this article we will discuss about:- 1. Composition of CSF 2. Circulation of CSF 3. Functions. Composition of CSF: 1. Clear, colorless, transparent fluid 2. Alkaline in nature 3. Around 0.3 ml of CSF is produced/min 4. Specific gravity 1.005 5. Water—99.13% 6. Solids—0.87 % 7. K+ = 3.00 mEq, whereas plasma has 5.0 mEq 8. CI- = 114.0 [...]