Give biological/ technical terms for the following : 1.WBCs squeeze through the walls of the capillaries 2.The sound produced when the antrio-ventricular valves close the heart 3.The process by which white blood cells engulf bacteria 4.Cellular components of blood containing haemoglobin 5.Squeezing out of white blood cells from the capillaries into the surrounding tissues
Answers
Answer:1.Diapedesis is the process through which WBC's can pass through the walls of capillaries
2.The first heart sound (S1) represents closure of the atrioventricular (mitral and tricuspid) valves as the ventricular pressures exceed atrial pressures at the beginning of systole (point a). S1 is normally a single sound because mitral and tricuspid valve closure occurs almost simultaneously.
3.When white blood cells encounter invaders such as bacteria, they engulf and destroy them through a process called phagocytosis.
4.The middle white layer is composed of white blood cells (WBCs) and platelets, and the bottom red layer is the red blood cells (RBCs). These bottom two layers of cells form about 40% of the blood.
5.White blood cells or leukocytes are amoeboid and can produce pseudopodia with which they can squeeze through the walls of the capillaries into the tissue and the process is called diapedesis
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