Vasoconstriction

Sandra Peart. Biology Assignment 2 Task1 AC1.1 Major Components & Function of Blood. The four major Blood Components are •Plasma •red cells •white cells •platelet •Plasma is the liquid part of the blood that is made up of 55% fluid, this is the blood’s liquid medium, by itself is straw-yellow in colour. The total volume of blood plasma is about 2.7-3.0 litres in human. The plasma carries carbon dioxide , hormones and waste. •Red blood cells •The red blood cells are called…

In Willems et al’s study of proprioception deficits among athletes with high rates of recurring lateral ankle sprains, they found that almost all of their subjects tended to under shoot the needed ankle during the test (Willems et al., 2002). In this study they had 4 groups of athletes to study. The control group were individuals who had no prior ankle injuries (Willems et al., 2002). The Instability group were individuals that had suffered from more than three inversion sprains and complained…

Jones. Mr. Jones appeared to be in distressed. He is now using his accessory muscles to breathe, crackles are heard on auscultation and there is decreased air entry in the left and right bases. Chest X ray revealed consolidation on the left lower lobe and atelectasis in the right lower lobe. After a series of investigation in the emergency department, Mr. Jones was commenced on Normal Saline at 125 mls/hr and he was given oxygen via non rebreather mask at 10L/min. He was then transferred…

Unit 4 – Fiona Bennett Brain Science In this unit I will be investigating the structure of the brain. The human brain is responsible for everything that happens in our bodies. On average the brain weighs 1.5 kilograms. It is one the most complex organs in the human body. The brain controls everything from coordinating movements to constructing sentences and even simple things like breathing. The brain is supplied with oxygen to keep it alive by a network of blood vessels. Structure of the brain…

QUESTIONS 1. Discuss the pathophysiology of coronary artery atherosclerosis. Include discussion of risk factors associated with the development of this disease. (10 points) Coronary artery atherosclerosis is most commonly comprised of atherosclerotic fibrous fatty obstructions of the large epicardial vessels, which provide for blood flow and transport nutrients, oxygen, and elimination of metabolic waste products such as CO2, lactic acid, and hydrogen ions. Coronary artery atherosclerosis…

Overview of The Myocyte The myocyte is composed of various protein filaments that comprise the contractile apparatus of the cardiac cell. Myofibrils, a collection of individual sarcomeres, enable contraction and relaxation of the myocyte. The sarcomere is the chief contractile unit of the cell. It is made up of two main proteins, myosin (thick filament) and actin (thin filament), as well as two regulatory proteins, tropomyosin and troponin. In order for the myocyte to contract and shorten it…

within particular limits. the body will do this by opposing a change that deviates from the normal. core temperature falls. Core temperature rises. Drop detected by hypothalamus . brain sends signals to the body that brings out shivering and vasoconstriction. Temperature turns to normal. Normal body temperature: 36.9c Rise detected by hypothalamus. Brain sends signals to body that brings out sweating and vasodilatation. Negative feedback comes when an important variable, sometimes…

Worksheet 2 Case Study (For Modules 6-11, prepared by Mr. Mark Fielding) Please read the following case study carefully and answer the questions below. John, a 56-year-old male (174cm, 85.4 kg), presented to the Emergency Department (ED) with a decreased level of consciousness, pale, sweating, and cool peripherally. He had decreased air entry in both bases of his lungs, widespread crackles, and pitting edema in both ankles. Upon investigation, John’s father Jim tells you John had an…

The patient was admitted into a small, rural hospital at 1900 for an ongoing complaint of unrelieved indigestion. The patient, 48 year old male has a history of and is presently involved with smoking. After admission into the hospital it is ruled out that the patient underwent a rule out myocardial infarction with further testing involving a cardiac catheterization to be done after admission upon a separate medical center. The patient also presents to the hospital with a history of a high-fat…