Physiology Study Materials

PSG 201 Lesson Note: Ageing in Physiology

This is time related deterioration of the physiological function necessary for survival and fertility. Maximum life span- the maximum number of years a member of a specie has been known to survive. This maximum life span depends on the special Life expectancy: the age at half the population still survive, this is not the characteristics of specie or population.  Why do they age?  1 The hereditary factor depending on what's going on the linage  2 loss of cellular mass and ability of cell ...

ElectroPhysiology of the Heart

Cardiac muscle, like skeletal muscle, is a striated muscle and much of the mechanism of contraction is similar between the two muscle types. The electrophysiology of the two muscles differs: First ,the cardiac action potential is not initiated by neural activity. Instead, specialized cardiac muscle tissue in the heart itself initiates the action potential, which then spreads directly from muscle cell to muscle cell. Neural influences have only a modulatory effect on the heart rate. Second, th...

Respiratory System and Functional Anatomy

Abstract The functional anatomy of the respiratory system and mechanism of respiration. The respiratory system consists of nostrils, nasopharynx, larynx, trachea, bronchi, bronchioles, alveoli duct and alveoli. The structures included from nostrils to terminal bronchioles will have 16 divisions, while the remaining structures show 7 divisions, giving a total of 23 divisions for the respiratory tract. The divisions are formed by the repeated branching of each segment of the tract. Structures l...

ERYTHROBLASTOSIS FETALIS

erythroblastosis is a disease of the new born baby. find out about its history, prevalence, pathophysiology, diagnosis, prevention and treatment.