Question

I need new and unique answers, please. (Use your own words, don't copy and paste), Please Use your keyboard (Don't use handwriting) Thank you..

BIOL 102

Choose any system of the human body and prepare a response to the following questions in 1-2 pages:
1. Introduction (Explain the system with the components)
2. Body (Explain how the system relates to achieve homeostasis in human body)
3. Conclusion (Choose any disease common in Kingdom of Saudi Arabia and explain how and which part of the system is affected)

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please complete my answer to be 500 words And I need new and unique answers, please. (Use your own words, don't copy and paste)

A:

1.The cardiovascular system also called circumlocutory system or blood vascular system. This system responsible for transporting gases, nutrients, hormones, and cellular waste products throughout the body. The cardiovascular system consists of three interrelated components : blood, heart and blood vessels.

Blood: Blood is a liquid connective tissue composed of blood plasma and formed elements( blood cells). The main function of the blood is transporting gases, nutrients, hormones, etc. Blood have three types of blood cell - RBC, WBC and platelets.

Heart: Heart is a mesodermally derived muscular pumping organ. Heart has four chamber right and left atria, right and left ventricles.

Blood vessels: The cardiovascular system has three types of blood vessels. These are the arteries, which carry blood away from the heart to other organs. The capillaries, which permit the exchange of substance between the blood and body tissues. And the veins, which return blood from the tissues back to the heart.

2. In order to maintain the homeostasis in the cardiovascular system and provided adequate blood to the tissue, blood flow must be redirected continually to the tissue as they become more active. Three homeostatic mechanisms ensure adequate blood flow, blood pressure and distribution are neural, endocrine and autoregulatory mechanism.

3. Coronary artery disease is common health problem in Saudi Arabia. Coronary artery disease is also called coronary heart disease, that causes narrowing of coronary arteries so that blood flow to the heart is reduced. In this disease affects the coronary arteries that supply blood to the heart muscle. It is made up of fat, cholesterol, calcium and other substance found in the blood.   

Answer 1

A: The rental system of our body is the system responsible for excretion of harmful waste product from our body. It comprises of two kidneys which are located in the lumber region. The kidneys are connected with the ureters and both the ureters finally joins the urinary bladder, where urine is stored before excretion. Urine from urinary bladder is excreted via urethra. The functional units of kidneys are Nephrons, which are divided into three parts : Proximal convoluted tubules, henle's loop and distal convoluted tubule. DCTs finally drains into collecting tables which on joining form ureters.

B. Urine formation starts from glomerular filtration (g.f.) in a prodigal way. Normally, about 180 L of fluid is filtered everyday: all soluble constituents of blood minus the plasma proteins (along with substances bound to them) and lipids, are filtered at the glomerulus. More than 99% of the glomerular filtrate is reabsorbed in the tubules; about 1.5 L urine is produced in 24 hours. The mechanisms that carryout ion movement across tubular cells are complex and involve a variety of energy dependent transmembrane pumps as well as channels in between the loose fitting cells of the proximal tubule (PT). Henles' loop works to concentrate the filtrate and DCT finally reads orb the excessive water to form urine.

C. A common disorder is - Nephrotic syndrome. In this disease the permeability of PCT gets lost and plasma proteins can easily cross the barrier are become present in glomerular filtrate. This causes decreased protein level in blood and increased protein loss in urine. This leads to pedal and facial oedema and increased infection and causes hypertension.