A) Hormones are transported in the blood. B) All invertebrates have an open circulatory system. C) Capillaries have thicker walls than veins do. D) The systemic circulation carries blood to and from the lungs. E) All of the above are true. Also, the blood coming back to the heart from the lungs is red oxygenated blood ready to go out to the body organs, but it is travelling in veins. So blood travels its endless figure of 8 journey around our bodies; Heart - body - heart - lungs - heart body etc. Everyday your system works like this, without rest, holidays or complaints.
The heart is a complex muscle that pumps blood through the three divisions of the circulatory system: the coronary (vessels that serve the heart), pulmonary (heart and lungs), and systemic (systems of the body), as shown in Figure 21.10.Coronary circulation intrinsic to the heart takes blood directly from the main artery (aorta) coming from the heart. Ch. 23 Exam #3 Bio 121. Study questions for Exam #3. STUDY. which of the following vessels transports oxygenated blood from the lung back to the heart? pulmonary vein. Oxygen-poor blood is carried from the heart of a mammal to the lungs via the. pulmonary arteries. Blood is pumped from the heart to the lungs by the. right ventricle.
The mammalian heart is 4 chambered and shows double circulation. This means that the blood passes through the heart twice for the body to be supplied once. The aorta or the great artery arising from the left ventricle takes the oxygenated blood to the body organs through a number of arteries. From these organs, the deoxygenated blood is. Blood accounts for 7% of the human body weight, with an average density around 1060 kg/m 3, very close to pure water's density of 1000 kg/m 3. The average adult has a blood volume of roughly 5 litres (11 US pt), which is composed of plasma and several kinds of cells.FMA: 9670.