Circulatory System Lab Report

Improved Essays
The circulatory system is composed of vessels that take blood from the heart, thin-walled capillaries where exchange occurs, and vessels that return blood to the heart. Blood is pumped by the heart simultaneously into two ways the pulmonary and systemic circuits. The pulmonary system takes blood through the lungs where gas exchange occurs and the systemic system transports blood to all parts of the body where exchange with tissue fluid takes place. In practical terms, we can think of the systemic circuit as a means to conduct blood to and away from the capillaries, because only here does exchange with tissue fluid take place. Nutrient molecules leave the capillaries to be taken up by the cells, and waste molecules given off by the cells are received by the capillaries to be transported away. Capillaries abound in all parts of the body, and no cell is more than a few micrometers from a capillary. Blood is composed of two parts: formed elements and plasma. All of the formed elements contribute to homeostasis, as outlined in table 1. Oxygen is utilized during cellular respiration, a process that …show more content…
Any interruption to the flow of blood may bring brain damage or death. The nervous system maintains homeostasis by controlling and regulating the other parts of the body. A deviation from a normal set point acts as a stimulus to a receptor, which sends nerve impulses to a regulating center in the brain. The brain directs an effector to act in such a way that an adaptive response takes place. If, for example, the deviation was a lowering of body temperature, the effector acts to increase body temperature. The adaptive response returns the body to a state of normalcy and the receptor, the regulating center, and the effector temporarily cease their activities. Since the effector is regulated by the very conditions it produced, this process is called control by negative

Related Documents

  • Improved Essays

    Introduction The purpose of this lab is to discover the respiratory and circulatory systems of three different species: the Starfish, the Bullfrog, and the Perch. All of these species have similarities and differences and is discussed in detail in this research report. In order to determine the respiratory and circulatory systems, a dissection of the three species is needed to obtain data. Determining the systems of these species will help understand how these species work and work together in their…

    • 815 Words
    • 4 Pages
    Improved Essays
  • Decent Essays

    Trigonometry Lab Report

    • 413 Words
    • 2 Pages

    possible for the diameter and circumference by wrapping the paper tape measure around the circles. The worst method would be using a ruler or meter stick. The only improvements that could be made is the use of smaller units to minimize uncertainty. Report Question: Wood The uncertainty of the volume of the wood was 2.40*10-4%. The uncertainty of the mass of the wood was 3.11*10-6%. The uncertainty of the density measurement is .77 ± 1.87*10-4. According to my wood's density,…

    • 413 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    this happens, as well as develop my existing knowledge of the mechanisms involved in keeping humans alive. A-level biology has provided me with a broad spectrum of knowledge; topics outlining the function of the body, such as the circulatory system and the immune system, have further stimulated my desire to pursue degree level study. Whilst studying A-level biology, I have improved my analytical skills through using primary and secondary data to develop accurate conclusions which I have then relayed…

    • 585 Words
    • 3 Pages
    Improved Essays