Answer:
An association between two organisms in which one benefits and the other derives neither benefit nor harm.
Explanation:
Answer:
The major nerves that serve the following areas are:
deltoid muscle - axillary nerve.
diaphragm - phrenic nerve.
posterior thigh - sciatic... Become a member and unlock all Study Answers. Try it risk-free for 30 days. Ask a question. Our experts can answer your tough homework and study questions. Search Answers.
Answer:
Autoimmune theory
Explanation:
Alzheimer's disease is the most common type of neurocognitive disorder, which usually occurs after the age of sixty-five and is characterized mainly by memory impairment.
The autoimmune theory suggests that <u>the immune system is prearranged so that it becomes unable to identify the body's proteins from foreign ones</u>. As a result, the immune system attacks its own cells.
Answer:
The pumping of the heart involves the alternate contraction and relaxation of the chambers of the heart. The upper chambers of the heart are called at atria and the lower chambers of the heart are called ventricles.
