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Physiology

Body Planes and Sections

Many views of the body are based on real or imaginary “slices” called sections or planes. In studying the body or organs, you often will be observing the flat surface of a section that has been produced by a cut through the body or a body part.

Passive Transport – Simple and Facilitated Diffusion and Osmosis

Passive transport describes the mechanism of transport of substances along the gradient without expense of any energy It relies on the physical aspects like concentration gradient, electrical gradient and pressure gradient. Given that the transport of substances takes place along the gradient, this process is likewise called

Cell Death

Cell death occurs by two distinct processes: Apoptosis Necrosis. Apoptosis Apoptosis is defined as the natural or programmed death of the cell under genetic control. Originally, apoptosis refers to the process by which the leaves fall from trees in autumn (In Greek, apoptosis means ‘falling leaves’). It

Thermoregulation -Temperature Regulation In Skin – Hypothermia And Hyperthermia

Body temperature is maintained at 37°C as a result of balance between heat generation and heat loss processes. This balance involves autonomic nervous system, metabolism, and behavioral responses. According to a 1992 study published in the Journal of the American Medical Association, humans are able to maintain

Divisions of The Nervous System

Although the nervous system functions as a coordinated whole, it is divided into anatomical and functional divisions as an aid in understanding this complex organ system. Anatomical Divisions The nervous system has two major anatomical divisions. The central nervous system (CNS) consists of the brain and spinal

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