7.02 Biology: The Beginning Of A Blood Cell

The Journey of a red blood cell begins inside the bone, where the blood cell is made which is the bone marrow. The red blood cells travel around the body within capillaries. Then the deoxygenated red blood cell makes its way to the heart in the vena cava. After the blood cell has made its way through the heart the right atrium (the cell enters the right atrium first) contracts and pushes the blood cell through the tricuspid and into the right ventricle (the parts where the blood cell enters second which is located in the bottom right corner of the heart.) Next the right ventricle again contracts and pushes the blood cell out of the heart through the semi lunar (the section of the heart where the cell enters third). Then finally the deoxygenated

The bone marrow is responsible for producing red blood cells, platelets, white blood cells, B cells, and natural killer cells. These cells are formed through the process of hematopoiesis where stem cells are separated into mature cells or sent to another part of the body where they can be matured.

Name: Nikia Martinez Class: Biology 240L L3-1201 Assignment: Electrocardiography Lab Report Due: April 3rd 2012 Professor: Dr. B. Schoffstall Introduction In a normal human being the heart correctly functions by the blood first entering through the right atrium from the superior and inferior vena cava. This blood flow continues through the right atrioventricular valve into the right ventricle. The right ventricle contracts forcing the pulmonary valve to open leading blood flow through the pulmonary valve and into the pulmonary trunk. Blood is then distributed from the right and left pulmonary arteries to the lungs, where carbon dioxide is unloaded and oxygen is loaded into the blood. The blood is returned from the lungs to the left

The right atrium is where the process begins. Then, blood travels through the tricuspid valve to the right ventricle, and from there to the pulmonary artery. Once the blood travels through the pulmonary artery, it reaches the lungs. While in the lungs, the blood goes through a gas exchange: deoxygenated blood gets oxygenated (The gas exchange takes place in the alveoli, which are tiny air sacs in the bottom of the lungs

The heart size varies with body size pumping blood to Likewise, Blood flows from the right atrium to the right ventricle, and then is pumped to the lungs to receive oxygen. From the lungs, the blood flows to the left atrium, then to the left ventricle, forming the complete circulation.

Answer 2: The respiratory system functions in the exchange of gases with the outside environment. Oxygen is inhaled through the nasal cavity or the mouth, and it travels to the alveoli in the lungs. There, the capillaries exchange the oxygen for carbon dioxide. The oxygenated blood flows back to the heart from the lungs. It enters the left side of the heart and is delivered to all the body tissues via the aorta. In the capillaries of the body tissues, oxygen is exchanged for carbon dioxide. This deoxygenated blood flows back to the right side of the heart and then to the lung. In the capillaries that run across the alveoli, carbon dioxide is exchanged for oxygen that has recently been inhaled. The carbon dioxide will then be exhaled through the mouth and nasal cavity.

• The oxygen rich blood returns from the lungs and it goes through the pulmonary vein to the left atrium.

Portfolio Task: Module 1 "Effective study skills are the sole foundation of a sound education". Study skills or study strategies are approaches applied to learning. They are generally critical to success in school, considered essential for acquiring good grades, and useful for learning throughout one's life. Study skills are fundamental to academic competence. Effective study

Circulatory Loops Pulmonary circulation transports deoxygenated blood from the right side of the heart to the lungs where the blood picks up oxygen and returns

Explanation: A). Blood carries oxygen from the lungs to the cells of organs and tissues and carbon dioxide from those organs and tissues to the lungs inside our body.

Unit 2 Case Study For this myocardial infarction, the right coronary artery was blocked. The parts of the heart that were affected by this blockage was the right atrium, the right ventricle, the interventricular septum, the Sinoatrial node and the AV node, and some parts of the left atrium and ventricle.

Asthma Breathing is a vital process for every human. Normal breathing is practically effortless for most people, but those with asthma face a great challenge. During an asthma attack, breathing is hampered, making it difficult or even impossible for air to flow through the lungs.

Within the alveoli, the oxygen is transferred to the blood whilst simultaneously collecting waste carbon dioxide for excretion as we breath out. This transference is known as diffusion and is linked to the cardiovascular system.

In humans, mature red blood cells are flexible biconcave disks that lack a cell nucleus and most organelles. 2.4 million new erythrocytes are produced per second.[1] The cells

Until now, it has been postulated that postnatal expansion of the myocardial vascular bed only proceeds through angiogenesis (Olivey & Svensson, 2010). However, recent findings suggest that bone marrow (BM)-derived endothelial precursor cells (EPCs) contribute to neovascularization in the heart and liver during the neonatal period, consistent with a vasculogenic paradigm (Asahara et al.,m 1999; Murayama et al., 2002). Further studies in avian embryos, based on clonal retroviral labeling, dye labeling and quail-chick interspecies chimeras, has provided further evidence that coronary vascular smooth muscle (vSMC) and endothelial cells (EC) derive from