PHYS30001 Cardiovascular Health Genes & Hormones Unimelb Assignment Answer
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The cardiovascular system is divided into three main parts; the heart, blood vessels, and arteries. The cardiopulmonary bypass machine mimics what happens to your body when you go out of the body: it takes over for part of an organ or a bodily function so that another can heal.
In this case, there’s fluid in our veins because we’re not breathing on our own (a doctor has excluded any other possible reason why).
It pumps oxygenated blood from the lungs up through tubes past clogged airways until they open again. This gives us time to recover before going back home with all systems running as usual!
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Assignment Solutions of “PHYS30001 Cardiovascular Health Genes & Hormones Unimelb”
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Assignment Activity 1. Define and describe cardiovascular structure, function, and development at both organ and cellular levels
Cardiovascular structure, function, and development are intricately intertwined. At the organ level, vessels lead to one’s heart, where electrical signals that control pumping functions originate.
The heart produces a powerful electrochemical signal which travels through blood vessels taking oxygen from the lungs to other parts of the body.
As it passes through blood vessels in various tissues all over the body during circulation, nutrients and metabolic by-products are delivered directly to those areas for utilization or removal as waste via organs such as kidneys and liver.
Circulation provides an unceasing supply of fresh oxygen-rich blood cells, hormones, enzymes, and chemical messengers that keep other vital organ systems functioning properly.
Factors affecting normal cardiac function can include coronary artery disease (CAD), myocardial infarction, congestive heart failure, high blood pressure (BP), changes in beats per minute of the heart (heart rate).
Structurally, cardiac contraction flows through coronary arteries to supply oxygenated blood to the muscle of the left ventricle where it is transferred into the pulmonary circulation.
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Assignment Activity 2. describe and critically evaluate how blood pressure is controlled and regulated, and factors involved in the development of cardiovascular diseases
Blood pressure is controlled and regulated by a system of sphincters. They regulate the flow of blood from arteries to veins, also known as vasculature.
One example of such an urgent is the human gluteal artery at the inferior rim of the pelvis (the butt) which when required closes and maintains reduced pressure-less arterial flow in order to temporarily stop a hemorrhage or even blood loss.
The regulation occurs through what is called “sphincter” which are muscle bundles surrounding some blood vessels in our body that contract rhythmically depending on their function.
These rhythmic contraction/relaxation cycles serve to control or regulate the volume or rate of blood flowing through them into whatever organ they supply.
Blood vessels are representative of a sphincter as they are muscular walled tubes that connect arteries and veins to one another or directly to an organ where blood is needed for the various functions there.
An example of this is in the heart’s blood flow. When a muscle needs more oxygen, it tells its capillaries to open wider.
This makes the middle part of the wall (tunica media) bigger. It makes it easier for blood to flow forward. When there is not as much need for oxygen, capillary tone relaxes and blood flow decreases.
Assignment Task 3. Describe the important endocrine bases for maintenance of cardiovascular homeostasis
The endocrine bases for the maintenance of cardiovascular homeostasis are primarily regulated by the autonomic nervous system, hypothalamic-pituitary axis, and various organs.
There are three major divisions of regulation: the systemic circulation, cellular blood flow in tissue beds (microcirculation), and vascular responsiveness to hormones.
These physiological control mechanisms affect both long-term and short-time dynamics.
In general, a reciprocal dialogue exists between a patient’s neurochemical state (HPA axis) and their thermoregulatory capability with regard to cardiovascular functioning.
This makes sense from an evolutionary perspective as these regulatory mechanisms helped humans deal with environmental stresses in the past.
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Assignment Activity 4. Develop skills to evaluate and consider the role of genes and environment in shaping cardiovascular health.
Genes and environmental factors interact to shape cardiovascular health.
The type of genes you have literally determined how your body will respond to environmental cues, such as diet and exercise.
In simple terms, those individuals with a slow metabolism may require fewer calories than those without in order to maintain weight.
This is exciting news as it opens the door for tailored approaches to the prevention and management of impaired lifestyle choices that put us at risk for heart disease!
So next time you hear someone say “I just can’t lose weight,” know they’re mistaken – we all can if we change habits appropriately based on our genetic makeup!
Assignment Activity 5. critically analyze and evaluate current scientific literature in the field of cardiovascular pathophysiology
Current scientific literature in the field of cardiovascular pathophysiology is increasing our understanding and awareness of the development and progression of heart disease.
Additionally, it has been shown that people with chronic kidney failure have higher rates of death from cardiovascular disease than those without kidney disease. This post will summarize some current advances in this area.
First, let’s talk about what heart health means, along with its different parts which include:
• Blood vessel dilation
• Blood flow • The function of blood vessels within our body to transport oxygen-rich red blood cells throughout the circulatory system are called arteries.
Arteries provide oxygen to all organs (like your kidneys) and tissue throughout your body during periods when this is needed most.
• Blood vessel constriction
Directly related to arteries are veins, which have the opposite goal of transporting oxygen-depleted blood cells back to the heart for replenishment. These are referred to as veins.
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