What is a contraindication of giving a patient nitroglycerine when they are experiencing signs of a stroke?
If the patient's blood pressure is lower than normal, do not give them nitroglycerine that vasodilates or else their blood pressure will continue to decrease.
How are hox genes important in development?
Hox genes are important to development in all organisms by developing specific body regions. Hox genes are a type of homeotic gene that is important for morphology.
Where is blood re-oxygenated? What is the general process of blood circulation through the heart?
Blood is re-oxygenated as it passes through the lungs and in detail, the alveoli. De-oxygenated blood passes through the right atrium by the inferior and superior vena cava. It enters the right atrium, then passes through the tricuspid valve (right atrioventricular valve) to the right ventricle. The de-oxygenated blood goes to the lings via the pulmonary artery. Oxygenated blood flows from the pulmonary vein to the left atrium. Blood flows through the bicuspid valve (mitral/ left atrioventricular valve) to the left ventricle. The oxygenated blood is thus passed to the rest of the body by initially leaving the heart via aorta.