When a drop in blood pressure is detected, the medulla oblongata in the brain stimulates the juxtaglomerular kidney cells to secrete renin. Renin converts angiotensinogen to angiotensin I. Angiotensin-Converting-Enzyme which is found in pulmonary blood vessels, acts on angiotensin I to convert it to angiotensin II. Angiotensin II activates angiotensin receptors AT1 and AT2. The result of the activation of AT1 is vasoconstriction and secretion of aldosterone (Brenner et al, 2003). Aldosterone secretion results in fluid retention
ASG1 A – Anatomy and Physiology 1. Describe the function of the heart, cardiac cycle and circulatory system Function of the heart The heart is a muscular organ that pumps and circulates blood throughout the body via a transport system of arteries and veins and capillaries. As the blood circulates throughout the body it supplies oxygen and nutrients to the tissues as well as removing carbon dioxide and harmful waste products (Tucker, 2015). The structure of arteries Arteries have thick muscular walls and a small lumen passage. According to L. Tucker they are constructed with three layers: • A fibrous outer layer • A middle layer of muscle and elastic tissue • A lining made of squamous epithelial tissue The epithelial lining has a
Similarly, a slower decrease in absorbance corresponds to a low rate of reaction. Through altering the various concentrations of NaCl that Amylase is exposed to, the effect of different NaCl concentrations on rate of reaction of amylase can be determined. Research Question: What are the effects of different sodium chloride concentrations on the rate of reaction of amylase, measured the spectrophotometry. Hypothesis: Sodium chloride, temperature, pH levels are all conditions that affect the activity of an enzyme. These conditions may denature the enzyme, decreasing its rate of reaction.
Veins transport blood to the heart and lungs at low pressure after receiving it from the capillaries. Valves inside the veins keep blood moving in one direction. The human body's arterial system branches out from one main artery, the dorsal aorta. Like veins, arteries have three layers: an outer layer of tissue, an inner layer of epithelial cells and a layer of muscle in between. Arteries deliver oxygenated blood to the capillaries, where the exchange of oxygen and carbon dioxide takes place.
2. The section about the pros and cons of the Blood Pressure Protocol which covers some of the main pros and cons of this natural solution. 3. The conclusions section where we share our final thoughts on the Blood Pressure Protocol… Let’s start :) The Basics The Blood Pressure Protocol was developed by Dr. Miles Channing, a hypertension specialist and cardiologist, and David Riley, who formerly suffered from severe and chronic hypertension.
The sympathetic division is most active during times of stress, exertion, or emergency, also known as “flight or fight”. Thus, the sympathetic nervous system increases heart rate, and the forced contractions widen the airways making it easier to breathe. Your body now releases stored energy, which allows for increased strength in muscles, and can also cause your palms to sweat, pupils to dilate, and hair to stand up. The parasympathetic division is most active during resting conditions, hence, why it can also be called, “rest and digest”. This division controls body processes during ordinary situations.
Brochure information Anatomy and physiology of the cardiovascular system Cardiovascular System According to (smith.A2013). The cardiovascular system includes the heart, blood vessels and also blood. Its role is to deliver nutrients and takes away any by-products from a person’s body. The cardiovascular system is the heart and it is a four-chambered pump that carries blood to the arteries these arteries then carries out clean and oxygenated blood to the tissue. The blood Definition According to (dictionary.com 2002).
Describe the function of the heart, cardiac cycle and circulatory system Function of the heart The heart is a muscular organ that pumps and circulates blood throughout the body via a transport system of arteries and veins and capillaries. As the blood circulates throughout the body it supplies oxygen and nutrients to the tissues as well as removing carbon dioxide and harmful waste products (Tucker, 2015). The structure of arteries Arteries have thick muscular walls and a small lumen passage. According to L. Tucker they are constructed with three layers: • A fibrous outer layer • A middle layer of muscle and elastic tissue • A lining made of squamous epithelial tissue The epithelial lining has a smooth surface to reduce friction and
Nature of electrolyte: Presence of salts in the electrolyte increases the corrosion rate. v. Presence of impurities in atmosphere: Impurities increase the rate of corrosion. Corrosion is more around industrial areas and sea. This is because of presence of gases in the atmosphere like CO2, H2S, SO2 Control of corrosion Why control
The pumping mechanism of the heart is dependent on the pressure differences created in the chambers of the heart following the contraction and relaxation of heart muscles. The contraction of heart muscles results from electrical signals distributed through the electrical conduction system in the heart. These electrical signals are generated from special cells within the heart