In this article we will discuss about the actions of parathyroid glands. It is a hypercalcemic and hypophosphatemic agent. Hence increases the plasma calcium level and decreases plasma phosphate level. The important sites of actions of PTH are: 1. Bone 2. Kidney 3. GI tract in an indirect way. 1. PTH on Bone (Figs 6.50, 6.51 and Table 6.14): It [...]
In this article we will discuss about the process of lactation, explained with the help of suitable diagrams. The hormones which influence the development of breasts are: a. At puberty, it will be estrogen and progesterone. In addition to these, some of the other hormones which are also required are: thyroxine, growth hormone, Cortisol and insulin. b. During pregnancy, it [...]
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 [...]