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Cardiovascular System

White Blood Cells – Production, Types, Structure, Concentration And Functions

White blood cells, or leukocytes are so named because pus and the buffy coat are white. These spherical cells are the only formed elements with nuclei and other organelles. A healthy person’s WBC count is typically 4,500 to 10,000 per ul of blood. However, the number of

Blood Pressure – Systolic And Diastolic Blood Pressure And Its Regulation

Blood pressure can be defined as the pressure exerted by the circulating blood against the wall of the blood vessels. Usually blood pressure refers to the arterial blood pressure in the systemic circuit-in the aorta and its branches. Arterial blood pressure is greatest during ventricular contraction (systole)

Plasma – Importance of The Normal Components of Plasma

Plasma is the fluid portion of the blood and consists of over 90% water. Water is the liquid carrier of plasma solutes (dissolved substances) and formed elements, in addition to being the solvent of all living systems. Plasma contains a great variety of solutes, such as nutrients,

Circulation Pathways- Systemic And Pulmonary Circuits.

The heart is a double pump that serves two distinct circulation pathways: the pulmonary and systemic circuits. Pulmonary Circuit The pulmonary circuit carries deoxygenated blood to the lungs, where oxygen and carbon dioxide are exchanged between the blood and the air in the lungs. The right ventricle

Hemostasis – The Sequence of Events That Occurs During Hemostasis.

Whenever blood vessels are damaged, the loss of blood poses a considerable threat to homeostasis. Hemostasis is a positive-feedback mechanism initiated after vascular injury to stop or limit blood loss. There are three separate but interrelated processes involved in hemostasis: vascular spasm, platelet plug formation, and coagulation.

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