Answer:
Homeostasis
Explanation:
During a stroke attack, interruption of circulation causes detrimental changes such as anoxia, oxygen and glucose deprivation (OGD), loss of adenosine triphosphate (ATP), acidosis due to anaerobic generation of lactate, disrupted cell ionic homeostasis, excitotoxicity, reactive oxygen species (ROS), and other
Answer:
b) blastic red blood cell (RBC).
Explanation:
In excess of 340 blood group antigens have now been described that vary between individuals. Thus, any unit of blood that is nonautologous represents a significant dose of alloantigen. Most blood group antigens are proteins, which differ by a single amino acid between donors and recipients. Approximately 1 out of every 70 individuals are transfused each year (in the United States alone), which leads to antibody responses to red blood cell <u>(RBC) alloantigens</u> in some transfusion recipients. When alloantibodies are formed, in many cases, RBCs expressing the antigen in question can no longer be safely transfused. However, despite chronic transfusion, only 3% to 10% of recipients (in general) mount an alloantibody response. In some disease states, rates of alloimmunization are much higher (eg, sickle cell disease). For patients who become alloimmunized to multiple antigens, ongoing transfusion therapy becomes increasingly difficult or, in some cases, impossible. While alloantibodies are the ultimate immune effector of humoral alloimmunization, the cellular underpinnings of the immune system that lead to ultimate alloantibody production are complex, including antigen consumption, antigen processing, antigen presentation, T-cell biology.
Answer: Steam burns the skin worse than hot water because the heat of vaporization is released as well.
Explanation:
The steam exhibit more energy than water at the same temperature that is 100° C. The steam uses the latent heat of vaporization so as to get vapourize and water do not exhibit energy. This latent heat of energy causes severe burns due to steam as compared to water. Steam burns are caused by the heat of vapors and they form scalds.
Answer: True
Explanation:
The corticospinal tract can be defined as the white matter motor pathway that starts with the cerebral cortex and terminates at the lower motor neuron of the spinal cord. This controls the movement of the trunk and limbs.
If the corticospinal tract is affected at any level above the medulla the voluntary control over the movements will be affected on the contra-lateral side of the body.
Answer:
- Cardiac output = defined as the amount of blood that comes out with each ventricular contraction in a minute. Normally in a healthy and young person it is 4.5 L / min.
- Heart rate = It is the amount of heartbeats in a minute. Normally it goes between 60 to 100 contractions per minute.
- Stroke Volume = It is the amount of blood ejected from the heart to the aorta and to the pulmonary artery in each contraction.
