Essays on Physiology Page 4

Introduction The cardiovascular system is one of most important system in the human body. It includes the heart which in most cases becomes an indicator of life. The cardiovascular system connects with the lymphatic system and both system forms networks of tubes around our body that spans from the head to the toes. They are connected…

Oxidative phosphorylation is a metabolic pathway that uses energy released by the oxidation of nutrients to produce ATP. Oxidative phosphorylation uses the electrochemical gradient, set up by the oxidation of nutrients, of protons across the inner mitochondrial membrane to generate ATP from ADP. During oxidative phosphorylation, electrons are transferred from electron donors to electron acceptors…

1. Why did Allen’s heart rate and blood pressure fall in this time of emergency (i.e. at a time when you’d expect just the opposite homeostatic response)? Pg. 969 This occurred because Allen’s spinal cord has decreased perfusion due to damage, and a broken vertebral bone. Also, there has been a disruptions of the sympathetic…

A pressure ulcer is a specific type of damage that occurs when there is direct pressure on the skin causing cellular damage due to lack of blood flow (ischawmia), or when there is shearing or friction forces causing mechanical stress on the tissues (Chapman and Chapman 1981). Pressure ulcers commonly occur in areas where there…

Mosby (2002) defines an anticoagulant as a substance that prevents or delays coagulation of the blood. Anticoagulants interfere with the formation of thromboplastin, with the conversion of prothrombin to thrombin, and with the formation of fibrin to fibrinogen (Mosby, 2002). Anticoagulants are usually prescribed for individuals who are suffering from venous and arterial vessel disorders…

Throughout my daily routine, I am constantly engaged in a variety of activities. This is particularly true during the current time of year when my schedule is jam-packed. I attend school, participate in cross country, swiftly eat at home, return to school for band practice, come back home once again for another meal, and ultimately…

Excitation The tummy receives both sympathetic and parasympathetic excitation. The sympathetic fibres reach the tummy via celiac rete. The parasympathetic fibres reach the tummy through the left and right pneumogastric nervousnesss. The anterior pneumogastric bole, which is derived chiefly from the left pneumogastric nervus, enters the abdominal pit through the esophageal suspension in the stop….

Trinitrotoluene (TO) and Dehydrogenation (TO) are constantly Ewing produce but, are stored in the gland as droplets. When the body needs more hormones they are then relished in to the blood. The third hormone is called Calculation it works with calcium and deals with the bone metabolism. If the Thyroid Gland does not produce the…

FORMATION OF TISSUE FLUID AND EXCHANGE OF MATERIALS IN THE CAPILLARY NETWORK In a capillary network, two opposing forces mainly determine the movement of fluid between the blood and tissue fluid: the hydrostatic pressure difference the osmotic potential difference between the blood and the tissue fluid. In the part of the capillary network near the…

Positive feedback Positive feedback is a mechanism by which an output is enhanced, such as protein levels. However, in order to avoid any fluctuation in the protein level, the mechanism is inhibited stochastically (I), therefore when the concentration of the activated protein (A) is past the threshold ([I]), the loop mechanism is activated and the…