Inferior vena cava

The Mechanics of the Heart An electrocardiogram, or EKG/ ECG, is a non-invasive test that measures the electrical activity of the heart and its electrical patterns. An electrical signal is sent through the heart to produce contractions that move the blood. This is what an EKG measures. In total that test may take from five to ten minutes and are ordered by a doctor to examine the heart more close. An EKG is done while the patient is lying down completely still (in order to reduce artifact or…

1. Which components of the digestive system are GI tract organs, and which are accessory digestive organs? The GI tract organs includes; The mouth, pharynx, esophagus, stomach, small intestine, and large intestine. The accessory digestive organs include; The tongue, teeth, salivary glands, liver, gall bladder, and the pancreas 2. Which organs of the digestive system come in contact with food, and what are some of their digestive functions? Mouth is used for ingestion of food. Saliva…

When my wife and I got married, one of the first things we wanted to do was to start a family. We always wanted to be young parents and to have a large family. We began trying to have a baby. Month after month, our disappointment grew. We were greatly disheartened with every negative pregnancy test and finally decided to see a fertility specialist. The doctor told us that there was nothing wrong with neither my wife nor I and that we needed to keep trying and stay hopeful. Four years after we…

Blood flow through the heart by: Superior and inferior vena cava return oxygen poor blood to the right atrium of the heart -> right atrium -> right ventricle -> pulmonary artery -> lungs -> oxygen rich blood is transported to the left atrium through the pulmonary veins -> left atrium -> left ventricle ->…

Many patients that undergo vascular interventions such as angiographies, stent or inferior vena cava filter placement that require radiographic imaging are at risk for contrast media induced nephropathy. This risk increases with age and with several comorbid conditions. Many aspects that can influence whether a patient may become affected by the contrast are noted in Pisanai et. al, in table 1. They are noted as “preexisting renal failure, diabetes, effective blood volume depletion,…

Once the P wave initiates the signal, the R wave is the first upward deflection after that. Anyone can easily recognize it on the electrocardiogram (ECG). That is because it is the largest one out of all the waveforms. The R wave corresponds to the depolarization of the left and right ventricles. It does not need the Q wave to be the first deflection at all. Also, note that there can be multiple R waves. Throughout the paper, it will discuss all the wave functions, specifically the R wave, any…

The term fibrillation is explained as a very rapid irregular contractions of the muscle fibers of the heart resulting in a lack of synchronism between heartbeat and pulse. There are two common fibrillations in the heart known as atrial fibrillation and ventricular fibrillation. While they are both fibrillations, ventricular fibrillation poses a far more fatal outcome than atrial fibrillation. This paper will be used to examine what causes the difference in these fibrillations and the difference…

Tommy Bachman Williams Biology 31 May 2016 Period 2 The 5 Systems of the Human Body The human body is a fascinating thing. It is made up of 5 key component systems that keep the human body working as efficiently and smoothly as possible. These 5 systems are the respiratory system, circulatory system, reproductive system, nervous system, and the digestive system. The Respiratory System is the system in the human body that allows us breathe properly and efficiently. The system is split into two…

Effect of chronic chest diseases on right ventricle I. Effects of chronic chest disease on right heart structure and function In patients with restrictive lung disease, right ventricular hypertrophy was estimated to be present in 50% of them (Figure15) (Shivkumaret al., 1994). Despite these changes in the structure of the right ventricle, myocardial systolic function is generally conserved in pulmonary hypertension associated with chronic lung disease (Vizza et al., 1998).…

that there are no fibers coming from the particular branch that supplied the left side. The left side was observed to be supplied by the postero-medial branching. This branch innervated through the diaphragm and then continued to run along the inferior surface of the diaphragm (Botha…