Ed happens because of Problems with blood flow
Answer:
The immune system review. B cells, White blood cells that produce antibodies and aid in immunological memory .The body's most important nonspecific defense is the skin, which acts as a .The B cell then internalizes the antigen and presents it to a specialized helper. Innate immunity. Antigens are anything that causes an immune response. such as secretions, mucous, bile, gastric acid, saliva, tears, and sweat. General Immune Responses .There are many types of white blood cells, or leukocytes, that work to defend and protect the. As a result, the immune system can react more quickly the next time it comes into . These cells belong to the so-called cellular defense. It makes sure, for example that bacteria that have entered the skin through a .As the innate immune response is not specialized for specific pathogens, it does not. Natural killer cells play a role in nonspecific cell-mediated immunity by attacking . It launches a more potent secondary immune response . Detection of antigen-antibody complexes is carried out through the following steps. For some illnesses, such as measles and chickenpox, having the disease . either from having an illness or from vaccination, are examples of active immunity. their mothers' antibodies and pathogen-fighting white cells cross the placenta to .a rabid animal might receive rabies antibodies (passive immunization to create .
Explanation:
Water is a polar molecule
<u>Stem cell </u>research has the potential to significantly impact the development of disease-modifying treatments for Parkinson’s disease with considerable progress made in creating dopamine-progressing cells.
Explanation:
Parkinson’s disease, a neurodegenerative disease, leads to reduction of dopamine (a neurochemical messenger which carries messages involving thinking and body movements to brain) in the body because the disease will target and kill dopamine-producing nerve cells (neurons). This leads to loss of movement and thinking abilities which are activated by dopamine.
Stem cells research is done to study about the prospects of stem cells in stem cell therapy for Parkinson’s patients as a viable source of new dopamine nerve cells. Research has been involved in growing stem cells to replace or regenerate dopamine-producing nerve cells by using embryonic stem cells or induced pluripotent stem cells as a treatment modality in Parkinson’s disease.
Answer:
The correct statements are:
- Sensors in the brain detect a lack of oxygen.
- The muscles in his body need more energy and therefore more oxygen.
The amount of oxygen in air and atmospheric pressure decreases with increase in altitude.
So, when Jon hikes up the hill he faces two problems; lack of oxygen in the air and decrease in atmospheric pressure.
Decreased atmospheric pressure makes it difficult for the lungs to breathe in the air and lack of oxygen decrease the blood oxygen level.
In addition, physical activity like hiking increases the oxygen demand of the body.
Due to these factors the respiratory system struggles to meet the oxygen demand of the body. The brain detect the same and triggers the respiratory and circulatory system to work more in order to meet the oxygen demand.
It causes the shortness of breath or heavy breathing, high blood pressure, tiredness, dizziness etc.
