In this essay will be writing and explain about cardiovascular system. Explaining how it is structured, how it functions and how this two rates to each other and defining anatomy and physiology. My particular area of interest is the heart. The cardiovascular system includes the heart and the blood vessels. Anatomy is the study of the structure of the human body and the physical relationships between body system e.g. organs, cells and tissues. Physiology is the study of how the body works and the way in which their integrated activities maintaining life and health of the individual for example how the heart beats and pumps blood to the whole body. Anatomy and physiology are related because anatomy cannot work without physiology. Function always reflects the structure and therefore the two works hand in hand with one another. Anatomy and physiology therefore are inseparable, because they work together
The heart is a muscular organ; it is positioned in between the lung just to the left of the For the body to work properly and carry out all its required functions there has to be a balance in all body systems, organs, tissues and cells, this is where anatomy and physiology are related by working together. The body maintain its stable condition and effective functioning through homeostasis. Thus physiology and anatomy work hand in hand to maintain survival of the body.
The Essay on Human Anatomy And Physiology Study Guide Example
Topic 1 – Introduction 1. Definitions: anatomy, physiology, palpation, auscultation, percussion, homeostasis, negative feedback loop, positive feedback loop, intracellular fluid, extracellular fluid, interstitial fluid, anatomical position, supine position, prone position, (frontal or coronal, transverse, sagittal, midsagittal, parasagittal, oblique sections or planes), cell, tissue, organ, organ ...
Cells that make up the basic unit of levels of organisation in the body consists of molecules and atoms, these include oxygen, nitrogen and other chemicals that are essential for the survival of the body. There are different types of cells and nerve cell is one of them. Tissues in the body are made up of cells that are similar in structure and have a special specific function also different shapes and sizes. There are four different types of tissues the connective, muscle, epithelial and nerve tissue. Two or more tissue types that perform a certain function or functions grouped together make up an organ. A group of organs work together to ensure survival of the body by interacting and performing related functions that make up the body system, for example the cardiovascular system. All the organs, cells, tissues and body systems working together make the organism that is a living thing.
The levels of organisation in the cardiovascular system are related by working together to maintain the survival of the body. In a case that one of the cells or organs is not functioning properly it results to a breakdown in the whole system. The heart is a muscular organ; it is positioned in between the lung just to the left of the middle of the chest and behind the rib cage. It is roughly cone shaped hallow muscular organ. It is about 10cm long and it is the size of a clinched fist. It weighed about 225 grams in women and is a bit heavier in men which it is about 310grams. The heart wall is composed of three layers of tissues which are pericardium, myocardium and endocardium. The pericardium is the outermost layer and it is made up of two sacks. The outer sac consists of fibrous and the inner of a continuous double layer of serous membrane, the myocardium is composed of specialised cardiac muscle which can only be found in the heart. It is not under voluntary control but is striated like a skeletal muscle. The endocardium lines the chamber and valves of the heart. It is a thin, smooth, glistening membrane that allows smooth flow of blood inside the heart. The structure of the heart and its associated blood vessels is shown in middle of the chest and behind the rib cage. It is roughly cone shaped hallow muscular organ. It is a thin, smooth, glistening membrane that allows smooth flow of blood inside the heart. The structure of the heart and its associated blood vessels is shown in Figure 1
The Term Paper on Connective Tissue Cell System Muscle
The tallest Biology CHAPTER 32 The tallest tree is the Redwood (Sequoia sempervirens) approx 110 m The tallest Angiosperm is the Australian Eucalyptus regnant Water Uptake and transport (Fig. 32. 1) = water is essential because: transport solute, cool the body, photosynthesis and Turgor pressure Osmosis- movement of H 2) through a semi-impermeable membrane Osmotic potential (o) -depend on dissolve ...
The heart has got four chambers. These four chambers are divided into two groups and each group has got two chambers. These chambers are called the atria and the ventricles. The four chambers are related because they deliver blood to the heart. The upper chamber is called atria and it has fairly thin walls and dispatch blood through the veins. It works together with the right atrium, superior vena cava and the inferior vena cava to assist blood that is low in oxygen from various sites in the body. The coronary sinus is the smallest veins which can also drain blood into the right atrium, taking it from the wall of the heart. Veins carry blood to the heart and with the exception of the pulmonary vein; they carry deoxygenated blood and waste carbon dioxide. The left atrium chamber of the heart receives blood from the lungs via pulmonary veins; two from the right lung and two left lung. Blood passes from the left atrium into the left ventricle through the atrioventricular opening, which is protected by a valve. The left ventricle has a very thick myocardium (cardiac muscle) which is needed by the blood receiving it from the left atrium into the aorta (large artery) and around the rest of the body. The aortic valve is situated in-between the left ventricle and the aorta. Following to the decrease of the left ventricle, the valve closes and prevents back flow from the aorta to the left ventricle. Arteries carry blood away from the heart and with the exception of the pulmonary artery, the blood is oxygenated. Arteries consist of three layers of tissue. Tunica adventitia is the outer layer which consists of fibrous connective tissue. Tunica media is the centre layer which consists of smooth muscle and elastic tissue. Tunica intima is an inner layer consists of flat epithelial cells to ensure the artery lining is smooth and does not slow down the flow of blood.
The heart pumps oxygen which rich blood to every living cell in the human body .In order to do this it must beat continuously with none stop. The heart uses almost 2,000 gallons of blood. In order for the heart to deliver oxygenated blood to all the cells around the body and maintain the blood pressure in the lungs and general circulation, blood is pumped through arteries. The heart beats 65-75 times a minute.
The Essay on Wave Of Excitation Blood Heart Atrium
... the blood returns to the heart. Blood returning to the heart from all parts of the body, except the lungs, enters the right atrium, ... diagram of the heart showing all four chambers, and associated vessels and valves. Outline th way the heart beats and is ... heart prevents the oxygenated blood on the left side from mixing with the deoxygenate d blood on the right side. The muscular heart pumps the blood ...
Within the body they are different types of level of structural complexity. The most fundamental is chemical level .Atoms are combined to form molecules of which there are different range in the body. They are also cellular level basic structural and functional practical units of the human body. This is shown on Figure 2
Having related structure to function of the heart and looked at structural levels all organs are important. Heart is vital, the heart supplies oxygenated blood throughout the body this aids everyday life and most organs relies on heart.
References
Edwards,W.(2013)Access to HE Human Biology Anatomy Pack
Parke, S. (2009)The Concise Human Biology Book. London. Dorling Kindersley Limited
Pickering,W. R,(2000) Complete Biology Oxford University press
Toole,G.Toole,S.(2008)AS Biology. Cheltenham. Nelson Thrones Limited.
Waugh, A. Grant, A. (2010) Anatomy and Physiology in Health and Illness .11th Edition: London. Elsevier Limited
http//www.helium.com-and-function-of-the-heart
http://revisionworld.co.uk/gcse-revision/biology
