What is the composition of blood?
By: Safa
Blood is a type of connective tissue composed of different types of cells embedded in a fluid medium called plasma. The average human adult carries about 5 liters of blood. Blood contributes about 8 percent to the total body weight. Cells in blood make up...
Function and importance of the adrenal glands
By: Vilie Farah
The human body has two adrenal glands. They are located atop the kidneys. The right adrenal gland has a triangular shape while the left one is in the form of a semi-crescent. ~ Adrenal gland structure ~Adrenal glands consist of two parts – a cortex...
The anatomy of the brain
By: Simon Cohen
The cortex (surface area) of the brain consists of sulci (small groves), fissures (big groves) and gyri (large convolutions). These greatly enlarge the surface area of the brain, and because of the mass of cell bodies, gives the surface a grey appearance. The brain can...
Factors that control the volume of urine passed
By: Omar Salvador
The urinary system is one of two systems that make up the urogenital system. This system helps to maintain the correct balance of water, salts and other substances in the body. This function is performed mainly by the kidneys, with special cells filtering water and...
What is oxygen debt
By: Omar Salvador
You probably have heard of the term "oxygen debt" and wonder what it means. To cite one of the many definitions that can be found on the Internet, oxygen debt is "the amount of oxygen required to repay the oxygen deficit by the removal of...
Function and importance of the parathyroid gland
By: Kat Centeno
The parathyroid glands are endocrine glands found in the posterior area in the thyroid gland. Normally, humans have four parathyroid glands. Because of its location, it was only discovered in the 1800's. Despite its close proximity to the thyroid gland, it has a completely differently...
The relative structure of arteries, veins and capillaries
By: Lea Miller
Arteries, veins, and capillaries are all vessels that form part of the body's circulatory system. Each has its particular function to keep blood moving through the system, bringing oxygen and nutrients and carrying away waste products. While arteries and veins are typically visible to the...
The relationship between blood volume and arterial pressure
By: Omar Salvador
Does the volume of blood in our body have anything to do with our body's arterial pressure? It is said that the average adult has approximately five liters of blood in his body. Taking into consideration its variability due to several factors (including body size)...
What is endocrinology?
By: Alicia M Prater PhD
Endocrinology is a sub-discipline of medicine that specializes in hormones. Medterms defines the specialty as “The study of hormones, their receptors, the intracellular signaling pathways they invoke, and the diseases and conditions associated with them.” The field overlaps with reproductive medicine and the...
What is endocrinology?
By: Ojo Oluwakemi
Our bodies are predestined to experience a sequence of significant changes and processes such as the ability to keep up the internal stability of the body by regulating its physiological processes regardless of the difference in the external state of the body. For instance: when...

 

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