Essays on Arterioles

Abstract

The literature defines hypertension as a medical condition experienced when the systolic blood pressure (BP) is equal or greater than 140 mm Hg or when the diastolic blood pressure is equal or greater than 90 mm Hg. Additionally, it offers a description of systematic, cellular, as well as molecular causes of hypertension. High blood pressure within the arteries is referred to as systemic hypertension (SH). The primary role of the systemic arteries is the transportation of oxygenated blood from the heart to the tissues of the body. The constriction of the arterioles (small arteries) is responsible for the high ...

Introduction

The human cardiovascular system includes the heart and the blood vessels. The heart is a hollow, four chambered organ. Internally, it is divided into the upper and the lower chamber called the atrium and the ventricle respectively. The blood vessels include arteries, arterioles, capillaries and veins. The arteries carry the blood away from the heart. Arterioles regulate the blood flow to a particular region of the body. Capillaries allow the diffusion of oxygen and nutrients from the blood to the tissues. Veins function in supplying blood from the periphery back to the heart. When blood exerts a hydrostatic pressure against the walls ...

Right atrium temporarily carries deoxygenated blood from body tissues. It receives deoxygenated blood from the upper portion of the body via superior vena cava. In addition, deoxygenated blood from the lower portion of the body enters the right atrium via inferior vena cava. Upper portion of the body carries the head, neck, and other organs situated superior to the heart while lower portion carries legs and other body parts situated superior to the heart. As more blood enters the right atrium, it fills up. This makes its walls to contract causing pressure to build up. The pressure causes the ...

Introduction 1

Physiology of Normal Pregnancy 2 Germinal stage3 Embryonic stage4 Foetal stage..5

Placental development and function6

Uterine.7 Structural and Functional Changes to Maternal Systems 8 Maternal Physiological Adaptations of the Respiratory System 9 Upper respiratory system..10 Thorax and Diaphragm..11

Maternal Physiological Adaptations of the Renal System 12

Summary 13 Figure 1. The left-hand duplicate displays a woman's body before she her pregnancy, and the right-hand appearance shows her body carrying a foetus full term.14

References: 15

Introduction A lot of the human cells are usually reproduced and then replaced throughout the life of a pregnant woman. However, the procedure does vary when it comes to the type of ...

Q. 1 Assess Mrs Daps’ medication chart. Discuss three (3) significant risks involved with Mrs Dap’ home and/or inpatient use of medicines.

Based on Mrs Dap’s medication chart, it shows that the patient is being administered with regular, variable dose and PRN medications. The patient requires several medications that are specific to her condition. However, the number of medications scheduled for Mrs Dap could potentially cause a medication interaction, even though each targets specific condition. For example, the patient is being administered with 10mg of Felodipine daily, which is a CCB type of medication. However, calcium channel blockers tend to ...

Introduction

The body is made up of various organ systems which perform various functions. One of this is the urinary system which is responsible for excretion of various metabolic wastes. An important organ in the urinary system is the kidney. In the kidney, blood undergoes ultra filtration; nutrients such as glucose are reabsorbed back while waste products such as urea and excess water form urine which is excreted. The kidney maintains electrolyte and water balance in the body. During sustained physical activity, the body looses a lot of water through sweating. This disrupts the electrolyte balance in the body and leads ...

It is well documented that human beings are capable of thriving and surviving in the harshest of conditions ranging from the arctic to the equator and with different forms of lifestyles and diets. One of the reasons’ for this is not farfetched, it is the ability of the human body to adapt to various conditions and in turn maintain homeostasis. Homeostasis refers to the human body's ability to regulate her internal environment physiologically in a bid to ensure and maintain stability in response to the instability and fluctuations of the weather and the external environment. Also, homeostasis refers to the ...

Introduction

Microcirculation refers to the circulation of blood within the small blood vessels embedded in body organs. Microcirculation blood vessels consists of innervated vessels called arterioles on the arterial side of microcirculation and venules, which transport blood from capillaries to veins. These blood vessels have the function of distribution blood in tissues. The control of circulation in the microcirculation is under the control of two factors: Local control and the nervous system (Fung & Zwerfach, 2001).

The nervous system regulates microcirculation through sympathetic stimulation that involves hormones like nor epinephrine and epinephrine exerting their effect on smooth muscle. Local control ...