Comparison Of The Heart And Nascent Circulatory System

3. Describe the blood flow of the heart and the correct locations the blood enters and exits.

Development of the embryo into a fetus throughout pregnancy consists of three main periods of development, made up of several weeks of development between each one; these are referred to commonly and by medical professionals as the first, second, and third trimesters of pregnancy. Following conception, the embryonic stage of prenatal development begins through the fifth week of pregnancy in which major structures begin to form. At this stage, the cells of the body begin to differentiate into cells that are specialized in unique functions such as blood, kidney, and nerve cells for their corresponding organ systems (Hill, 2016). According to Sacks

To commence with, during development a human being grows at an astonishingly rapid pace. According to Guttmacher Institute, “89% of all abortions in the United States are performed in the first trimester of pregnancy.” (2005). In the first trimester (16 weeks), the baby’s eyes and eyelids, nose, mouth, and tongue have formed, and the baby's reproductive organs also develop. The cardiovascular system is the first system that begins to function. The baby’s heart begins to circulate their own blood, similar to his mother’s heart, twenty-two days after conception. Electrical brain activity can be detected at six or seven

The cardiovascular system - The cardiovascular system is responsible for transporting nutrients and removing gaseous waste from the body. It consists of the heart, which powers the whole process, the veins, arteries, and capillaries, which deliver oxygen to tissue at the cellular level. The cardiovascular system carries blood that is low in oxygen away from the heart to the lungs via arteries, where oxygen levels are restored through the air once oxygenated, this blood is then carried throughout the body via arteries, keeping our organs and tissue alive. The cardiovascular system is the workhorse of the body, continuously moving to push blood to the cells. If this important system ceases its work, the body dies.

In the fetal circulatory routes blood flows through the fetus that is actually complicated than after the baby is born. The fetal circulatory system it you have to use three shunts, they are a small passages that they direct blood that needs to be oxygenated. The shunts they bypass the lungs, in it moves blood from the right atrium of the heart to the left atrium, and the ductus arteriosus, which moves blood from the pulmonary artery to the aorta.

Fetal circulation is the pathway of blood circulation in the fetus (Anderson, 2002). The placenta has an amniotic filled sac attached to it called the amniotic sac. The placenta starts growing in the third week that a woman is pregnant. It starts functioning at four weeks of pregnancy. The normal growth and development of the fetus is the responsibility of an organ of pregnancy called the placenta. The umbilical cord secures the fetus to the placenta. Two arteries and one vein make up the umbilical cord. The placenta links the fetus to the uterine wall of the mother so that the mother and fetus can exchange nutrition and oxygen, as well as eliminating carbon dioxide and other waste products.

    According to parents.com, after conception, a fetus begins to develop rather quickly. In the fifth week of pregnancy, a baby’s heart begins to beat. A baby also develops three distinct layers, ectoderm, endoderm, and mesoderm. These three layers will eventually form the body systems that are necessary

The placenta’s primary role is to provide physiological exchange between the fetal and maternal systems. Placenta circulation system is important to successful pregnancy , this related to fetal weight, placental size and uterine and umbilical blood flows during normal pregnancy 15. The exchange of materials between fetus and mother takes place at fetomaternal barrier, which separates maternal blood in the inter-villous space from fetal circulation 17 .

There are many different stages of reproduction, and changes that happen in a woman when she becomes pregnant. It may be difficult for some people to comprehend what really goes on in the woman's body while this biological process takes place. Our topic today will help those who have a hard time comprehending the changes a fetus goes through during a pregnancy.

Heart disease, commonly known as cardiovascular disease, consists of various conditions that affect an individual’s heart. The biological system involved in heart disease is the circulatory system, which delivers oxygen and food to all the cells of the body in order to remove waste and carbon dioxide (“Heart Disease”, N.d.). The circulatory system consists of the heart, lungs, blood, and blood vessels. These conditions affect blood vessels by narrowing or blocking their passage way to the heart, which can lead to numerous types of heart conditions. There are 3 major types of blood vessels, which are the arteries, capillaries, and veins. Once any of these blood vessels are affected, many heart conditions can arise. The various conditions include:

At 16 weeks, your baby is the size of an avocado weighing around 100 grams and measuring almost 12cm. The baby will develop a lot more in the next three weeks almost doubling in size and so will the placenta. The baby’s muscle, mainly the neck and back bones are now a lot more tougher and is ableing your baby to have their head sit more up and is allowing the baby’s body to become straighter. A philtrum is starting to appear under the baby’s nose meaning its giving your baby cupid bow shape right above her lip however it’s not that noticeable. Now your baby’s circulatory system has fully developed and the baby’s heart is pumping 28 liters of blood around the baby’s entire body, every day, and by the time the baby is born it’ll be pumping

Anatomy is one of the oldest branches of medicine, with historical records dating back at least as far as the third century BC . Cardiac anatomy has been a continually explored topic throughout this time, and there are still publications on new facets of cardiac anatomy being researched and reported today. One of the fundamental tenets of the study of anatomy has been the description of the structure based on the universal orientation, otherwise termed the anatomic position (Fig. 2.1 ). The anatomic position depicts the subject facing the observer and is then divided into three orthogonal planes. Each plane divides the body or individual structure within the body (such as the heart) into two portions.

The heart is at the very centre of the cardiovascular system. It can be found on the left hand side of the chest and found beneath the sternum. Deoxygenated blood flows into the right side of the heart, it is then pumped to the lungs to pick up oxygen. The deoxygenated blood is then returned and is pumped around the body. The heart is surrounded by a thin layer called percidium. The cavity has a liquid that will prevent any sort of friction as the heart beats.

Around the third week of pregnancy, the fetal heartbeat can be seen as a flicker on the ultrasound monitor. At this stage, the heart organizes into two chambers – one atrium on the left and one on the right. Structural defects are most likely to occur during this time of development. Eight weeks after conception, the fetal heart consists of

The formation of the heart begins during the third week of development, the embryo undergoes gastrulation in the embryonic plate resulting in the formation of three germ layers (ectoderm, mesoderm and endoderm). Originally the embryonic plate possesses two germ layers (ectoderm & mesoderm) until pregenital heart cells from the ectoderm migrate through the primitive streak in to splanchnic mesoderm forming the third germ layer (endoderm) creating the primary heart field a region responsible for the formation of the left ventricle, atria and a part of the right ventricle.