Menstrual cycle and its phase Hello students and friends, today we are going to learn what is the menstrual cycle, its phase, symptoms, complications, and how the uterine changes occur. So, let's start with what is puberty? Puberty is the stage of life when childhood converts into adulthood. At this stage of life, the body will grow faster than at any other time. Development of secondary sexual characteristics. Male: 12-16 years Female: 10-16 years. There are five signs of puberty, given by Thanners and Marshal(scientists)- Thelarchae- Development of breast Adrenarche- Development of axillary hair(underarm hair) Pubarchae- Pubic hair Increase in height Menarche- In girls starting of the menstrual cycle(1st menses). There are 2 types of puberty- Precocious- there is the development of secondary sexual characteristics before the age of 10 years. Delayed- puberty comes after the age of 16 years. What is the menstrual cycle? In the female reproductive system, natural changes occur in a
Lung anatomy, lobes, and fissures Hello students and friends, today we are going to discuss lung anatomy , here we also learn what are bronchopulmonary segments, lobes of the lungs, fissures of the lungs, and also about its covering (pleura). Tests, treatment, and conditions are also included in today’s topic. So let us start with its gross anatomy. Gross anatomy >Lungs are located in the chest on both sides of the heart in the rib cage(thoracic cavity). >They are conical in shape. >They are narrowly rounded – Apex at the top. >They have a broad base – rest on the diaphragm (matching its concavity) >The apex of the lung extends into the root of the neck and reaches shortly above the level of the sternal end of the 1st rib. >The medial surface of the lungs faces towards the center of the chest and lies against the heart, great vessels, and the carneae. Great vessels [IVC(Inferior vena cava), pulmonary artery, PV(pulmonary vein), SVC(superior vena cava), and aorta] w
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